the difference between topic sentence and thesis

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Thesis Statements

A thesis statement defines the scope and purpose of the paper. It needs to meet three criteria: 1. It must be arguable rather than a statement of fact. It should also say something original about the topic.     Bad thesis: Lily Bart experiences the constraints of many social conventions in The House of Mirth . [Of course she does. What does she do with these social conventions, and how does she respond to them? What's your argument about this idea?]     Better thesis: Lily Bart seeks to escape from the social conventions of her class in The House of Mirth , but her competing desires for a place in Selden's "republic of the spirit" and in the social world of New York cause her to gamble away her chances for a place in either world. [You could then mention the specific scenes that you will discuss.] 2. It must be limited enough so that the paper develops in some depth.     Bad thesis: Lily Bart and Clare Kendry are alike in some ways, but different in many others. [What ways?]     Better thesis: Lily Bart and Clare Kendry share a desire to "pass" in their respective social worlds, but their need to take risks and to reject those worlds leads to their destruction. 3. It must be unified so that the paper does not stray from the topic.     Bad thesis: Lily Bart gambles with her future, and Lawrence Selden is only a spectator rather than a hero of The House of Mirth . [Note: This is really the beginning of two different thesis statements.]     Better thesis: In The House of Mirth, Lawrence Selden is a spectator who prefers to watch and judge Lily than to help her. By failing to assist her on three separate occasions, he is revealed as less a hero of the novel than as the man responsible for Lily's downfall. [Note: Sometimes thesis statements are more than one sentence long.] 4. Statements such as "In this essay I will discuss " or "I will compare two stories in this paper" or "I was interested in Marji's relationship with God, so I thought I would talk about it in this essay" are not thesis statements and are unnecessary, since mentioning the stories in the introduction already tells the reader this. Topic Sentences Good topic sentences can improve an essay's readability and organization. They usually meet the following criteria: 1. First sentence. A topic sentence is usually the first sentence of the paragraph, not the last sentence of the previous paragraph. 2. Link to thesis . Topic sentences use keywords or phrases from the thesis to indicate which part of the thesis will be discussed. 3. Introduce the subject of the paragraph. They tell the reader what concept will be discussed and provide an introduction to the paragraph. 4. Link to the previous paragraph. They link the subject of the present paragraph to that of the previous paragraph. 5. Indicate the progression of the essay. Topic sentences may also signal to the reader where the essay has been and where it is headed through signposting words such as "first," "second," or "finally." Good topic sentences typically DON'T begin with the following. 1. A quotation from a critic or from the piece of fiction you're discussing. The topic sentence should relate to your points and tell the reader what the subject of the paragraph will be. Beginning the paragraph with someone else's words doesn't allow you to provide this information for the reader. 2. A piece of information that tells the reader something more about the plot of the story. When you're writing about a piece of literature, it's easy to fall into the habit of telling the plot of the story and then adding a sentence of analysis, but such an approach leaves the reader wondering what the point of the paragraph is supposed to be; it also doesn't leave you sufficient room to analyze the story fully. These "narrative" topic sentences don't provide enough information about your analysis and the points you're making.

Weak "narrative" topic sentence: Lily Bart next travels to Bellomont, where she meets Lawrence Selden again. Stronger "topic-based" topic sentence: A second example of Lily's gambling on her marriage chances occurs at Bellomont, where she ignores Percy Gryce in favor of Selden. [Note that this tells your reader that it's the second paragraph in a series of paragraph relating to the thesis, which in this case would be a thesis related to Lily's gambling on her marriage chances.]

3. A sentence that explains your response or reaction to the work, or that describes why you're talking about a particular part of it, rather than why the paragraph is important to your analysis. 

Weak "reaction" topic sentence: I felt that Lily should have known that Bertha Dorset was her enemy. Stronger "topic-based" topic sentence: Bertha Dorset is first established as Lily's antagonist in the train scene, when she interrupts Lily's conversation with Percy Gryce and reveals that Lily smokes.

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5.2: Identifying Thesis Statements and Topic Sentences

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Being able to identify the purpose and thesis of a text, as you’re reading it, takes practice. This section will offer you that practice.

One fun strategy for developing a deeper understanding the material you’re reading is to make a visual “map” of the ideas. Mind maps, whether hand-drawn or done through computer programs, can be fun to make, and help put all the ideas of an essay you’re reading in one easy-to-read format.

Your understanding of what the “central” element of the mind map is might change as you read and re-read. Developing the central idea of your mind map is a great way to help you determine the reading’s thesis.

Figure 2.5. 1

- Hand-drawn Mind Map

Locating Explicit and Implicit Thesis Statements

In academic writing, the thesis is often explicit : it is included as a sentence as part of the text. It might be near the beginning of the work, but not always–some types of academic writing leave the thesis until the conclusion.

Journalism and reporting also rely on explicit thesis statements that appear very early in the piece–the first paragraph or even the first sentence.

Works of literature, on the other hand, usually do not contain a specific sentence that sums up the core concept of the writing. However, readers should finish the piece with a good understanding of what the work was trying to convey. This is what’s called an implicit thesis statement: the primary point of the reading is conveyed indirectly, in multiple locations throughout the work. (In literature, this is also referred to as the theme of the work.)

Academic writing sometimes relies on implicit thesis statements, as well.

This video offers excellent guidance in identifying the thesis statement of a work, no matter if it’s explicit or implicit.

Topic Sentences

We’ve learned that a thesis statement conveys the primary message of an entire piece of text. Now, let’s look at the next level of important sentences in a piece of text: topic sentences in each paragraph.

A useful metaphor would be to think of the thesis statement of a text as a general: it controls all the major decisions of the writing. There is only one thesis statement in a text. Topic sentences, in this relationship, serve as captains: they organize and sub-divide the overall goals of a writing into individual components. Each paragraph will have a topic sentence.

Figure 2.5. 2

It might be helpful to think of a topic sentence as working in two directions simultaneously. It relates the paragraph to the essay’s thesis, and thereby acts as a signpost for the argument of the paper as a whole, but it also defines the scope of the paragraph itself. For example, consider the following topic sentence:

Many characters in Lorraine Hansberry’s play A Raisin in the Sun have one particular dream in which they are following, though the character Walter pursues his most aggressively.

If this sentence controls the paragraph that follows, then all sentences in the paragraph must relate in some way to Walter and the pursuit of his dream.

Topic sentences often act like tiny thesis statements. Like a thesis statement, a topic sentence makes a claim of some sort. As the thesis statement is the unifying force in the essay, so the topic sentence must be the unifying force in the paragraph. Further, as is the case with the thesis statement, when the topic sentence makes a claim, the paragraph which follows must expand, describe, or prove it in some way. Topic sentences make a point and give reasons or examples to support it.

 The following diagram illustrates how a topic sentence can provide more focus to the general topic at hand.

Placement of Topic Sentences

What if I told you that the topic sentence doesn’t necessarily need to be at the beginning? This might be contrary to what you’ve learned in previous English or writing classes, and that’s okay. Certainly, when authors announce a topic clearly and early on in a paragraph, their readers are likely to grasp their idea and to make the connections that they want them to make.

However, when authors are writing for a more sophisticated academic audience—that is an audience of college-educated readers—they will often use more sophisticated organizational strategies to build and reveal ideas in their writing. One way to think about a topic sentence, is that it presents the broadest view of what authors want their readers to understand. This is to say that they’re providing a broad statement that either announces or brings into focus the purpose or the meaning for the details of the paragraph. If the topic sentence is seen as the broadest view, then every supporting detail will bring a narrower—or more specific—view of the same topic.

With this in mind, take some time to contemplate the diagrams in the figure below. The widest point of each diagram (the bases of the triangles) represents the topic sentence of the paragraph. As details are presented, the topic becomes narrower and more focused. The topic can precede the details, it can follow them, it can both precede and follow them, or the details can surround the topic. There are surely more alternatives than those that are presented here, but this gives you an idea of some of the possible paragraph structures and possible placements for the topic sentence of a paragraph.

Consider some of the following examples of different topic sentence placements in a paragraph from a review essay of the beloved children’s book, The Cat in the Hat , by Dr. Seuss. Paragraph structures are labeled according to the diagrams presented above, and topic sentences are identified by red text.

Topic Sentence-Details-Topic Sentence

A good children’s book requires an exciting plot and a problem with which children can sympathize. In The Cat in the Hat there is plenty of action, depicted in the wild antics of the cat, and later in the amazing but dangerous and messy tricks of Thing 1 and Thing 2. All this excitement and action naturally draws children into the story and keeps the plot moving forward at a pace that maintains their interest. There is also tension to be resolved. The fish senses danger and constantly warns the children not to participate in the cat’s perilous stunts. And later, as the mother’s return becomes more imminent, the children begin to heed the fish’s warning and finally wish to contain the chaos and clean up the mess, but how? While this plot is fantastic enough to fuel any child’s imagination, it also contains a problem with which any child can relate: a mess and the threat of a parent’s disapproval. The careful balance of action, tension, and relatability is what makes this book an enduring childhood favorite.

Topic Sentence-Details

The careful balance of action, tension, and relatability is what makes Dr. Seuss’s The Cat in the Hat an enduring childhood favorite. In The Cat in the Hat there is plenty of action, depicted in the wild antics of the cat, and later in the amazing but dangerous and messy tricks of Thing 1 and Thing 2. All this excitement and action naturally draws children into the story and keeps the plot moving forward at a pace that maintains their interest. There is also tension to be resolved. The fish senses danger and constantly warns the children not to participate in the cat’s perilous stunts. And later, as the mother’s return becomes more imminent, the children begin to heed the fish’s warning and finally wish to contain the chaos and clean up the mess, but how? While this plot is fantastic enough to fuel any child’s imagination, it also contains a problem with which any child can relate: a mess and the threat of a parent’s disapproval.

You can relocate the topic sentence to the end here, and you’ll have an example of the Details-Topic Sentence method of organizing the paragraph.

Details-Topic Sentence-Details

In The Cat in the Hat there is plenty of action, depicted in the wild antics of the cat, and later in the amazing but dangerous and messy tricks of Thing 1 and Thing 2. All this excitement and action naturally draws children into the story and keeps the plot moving forward at a pace that maintains their interest. The careful balance of action, tension, and relatability is what makes Dr. Seuss’s The Cat in the Hat an enduring childhood favorite. There is definitely tension to be resolved here. The fish senses danger and constantly warns the children not to participate in the cat’s perilous stunts. And later, as the mother’s return becomes more imminent, the children begin to heed the fish’s warning and finally wish to contain the chaos and clean up the mess, but how? While this plot is fantastic enough to fuel any child’s imagination, it also contains a problem with which any child can relate: a mess and the threat of a parent’s disapproval.

Explicit and Implicit Topic Sentences

Similar to thesis statements, topic sentences may be explicit or implicit.

Consider the following paragraph from an essay titled “The Bothersome Beauty of Pigeons,” by author and Boise State writing professor, Bruce Ballenger. It’s important to note that this is a personal narrative essay rather than a more traditional academic essay, but the paragraph provides a good example of an implied topic. In this essay Ballenger takes the time to consider the beauty of pigeons, a bird that’s usually thought of as nothing more than a nuisance. Just prior to this paragraph, Ballenger talks about how he used a fake owl to scare away pigeons on his property. He goes on to explain,

My pigeons moved next door where an elderly couple feed them bird seed and have the time and willingness to clean up after their new charges; so it seems, in this case, things have worked out for everyone. But the large flocks still haunt the piazzas in Florence and Venice, the squares in London, and similar places in nearly every city across the globe. Despite their ability to distinguish between a Van Gogh and a Chagall, pigeons still deposit droppings that deface the great marble statues and facades–the works of art and architecture that are part of our human heritage–and yet people still buy bags of seed for about a dollar and pose for photographs, drenched in doves. Meanwhile, officials in these cities continue, sometimes quietly, to wage war against the birds (“Introduction”).

Here, Ballenger seems to be saying that in spite of the attempts of so many to rid themselves of the pigeons, others are still drawn to them and will feed them and encourage them to come back. His main idea seems to be that the battle against pigeons is a losing proposition, but he doesn’t come out and say so. His message in this paragraph is implied. Do you think this paragraph would be improved with an explicit topic sentence?

EXERCISE 1: Identify the Topic and Focus

Choose a piece of writing, perhaps an essay or some news articles found online, and for each paragraph identify (1) the topic and (2) the more focused idea. Remember, the topic sentence applies more focus to the broader topic to help narrow the scope of the paragraph. For example, the topic of a paragraph might be school lunches. The more focused idea of that same paragraph might be the idea of having students plant school gardens as a way to help incorporate more fresh produce in the menu.

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Thesis Statements

What this handout is about.

This handout describes what a thesis statement is, how thesis statements work in your writing, and how you can craft or refine one for your draft.

Introduction

Writing in college often takes the form of persuasion—convincing others that you have an interesting, logical point of view on the subject you are studying. Persuasion is a skill you practice regularly in your daily life. You persuade your roommate to clean up, your parents to let you borrow the car, your friend to vote for your favorite candidate or policy. In college, course assignments often ask you to make a persuasive case in writing. You are asked to convince your reader of your point of view. This form of persuasion, often called academic argument, follows a predictable pattern in writing. After a brief introduction of your topic, you state your point of view on the topic directly and often in one sentence. This sentence is the thesis statement, and it serves as a summary of the argument you’ll make in the rest of your paper.

What is a thesis statement?

A thesis statement:

• tells the reader how you will interpret the significance of the subject matter under discussion.
• is a road map for the paper; in other words, it tells the reader what to expect from the rest of the paper.
• directly answers the question asked of you. A thesis is an interpretation of a question or subject, not the subject itself. The subject, or topic, of an essay might be World War II or Moby Dick; a thesis must then offer a way to understand the war or the novel.
• makes a claim that others might dispute.
• is usually a single sentence near the beginning of your paper (most often, at the end of the first paragraph) that presents your argument to the reader. The rest of the paper, the body of the essay, gathers and organizes evidence that will persuade the reader of the logic of your interpretation.

If your assignment asks you to take a position or develop a claim about a subject, you may need to convey that position or claim in a thesis statement near the beginning of your draft. The assignment may not explicitly state that you need a thesis statement because your instructor may assume you will include one. When in doubt, ask your instructor if the assignment requires a thesis statement. When an assignment asks you to analyze, to interpret, to compare and contrast, to demonstrate cause and effect, or to take a stand on an issue, it is likely that you are being asked to develop a thesis and to support it persuasively. (Check out our handout on understanding assignments for more information.)

How do I create a thesis?

A thesis is the result of a lengthy thinking process. Formulating a thesis is not the first thing you do after reading an essay assignment. Before you develop an argument on any topic, you have to collect and organize evidence, look for possible relationships between known facts (such as surprising contrasts or similarities), and think about the significance of these relationships. Once you do this thinking, you will probably have a “working thesis” that presents a basic or main idea and an argument that you think you can support with evidence. Both the argument and your thesis are likely to need adjustment along the way.

Writers use all kinds of techniques to stimulate their thinking and to help them clarify relationships or comprehend the broader significance of a topic and arrive at a thesis statement. For more ideas on how to get started, see our handout on brainstorming .

How do I know if my thesis is strong?

If there’s time, run it by your instructor or make an appointment at the Writing Center to get some feedback. Even if you do not have time to get advice elsewhere, you can do some thesis evaluation of your own. When reviewing your first draft and its working thesis, ask yourself the following :

• Do I answer the question? Re-reading the question prompt after constructing a working thesis can help you fix an argument that misses the focus of the question. If the prompt isn’t phrased as a question, try to rephrase it. For example, “Discuss the effect of X on Y” can be rephrased as “What is the effect of X on Y?”
• Have I taken a position that others might challenge or oppose? If your thesis simply states facts that no one would, or even could, disagree with, it’s possible that you are simply providing a summary, rather than making an argument.
• Is my thesis statement specific enough? Thesis statements that are too vague often do not have a strong argument. If your thesis contains words like “good” or “successful,” see if you could be more specific: why is something “good”; what specifically makes something “successful”?
• Does my thesis pass the “So what?” test? If a reader’s first response is likely to  be “So what?” then you need to clarify, to forge a relationship, or to connect to a larger issue.
• Does my essay support my thesis specifically and without wandering? If your thesis and the body of your essay do not seem to go together, one of them has to change. It’s okay to change your working thesis to reflect things you have figured out in the course of writing your paper. Remember, always reassess and revise your writing as necessary.
• Does my thesis pass the “how and why?” test? If a reader’s first response is “how?” or “why?” your thesis may be too open-ended and lack guidance for the reader. See what you can add to give the reader a better take on your position right from the beginning.

Suppose you are taking a course on contemporary communication, and the instructor hands out the following essay assignment: “Discuss the impact of social media on public awareness.” Looking back at your notes, you might start with this working thesis:

Social media impacts public awareness in both positive and negative ways.

You can use the questions above to help you revise this general statement into a stronger thesis.

• Do I answer the question? You can analyze this if you rephrase “discuss the impact” as “what is the impact?” This way, you can see that you’ve answered the question only very generally with the vague “positive and negative ways.”
• Have I taken a position that others might challenge or oppose? Not likely. Only people who maintain that social media has a solely positive or solely negative impact could disagree.
• Is my thesis statement specific enough? No. What are the positive effects? What are the negative effects?
• Does my thesis pass the “how and why?” test? No. Why are they positive? How are they positive? What are their causes? Why are they negative? How are they negative? What are their causes?
• Does my thesis pass the “So what?” test? No. Why should anyone care about the positive and/or negative impact of social media?

After thinking about your answers to these questions, you decide to focus on the one impact you feel strongly about and have strong evidence for:

Because not every voice on social media is reliable, people have become much more critical consumers of information, and thus, more informed voters.

This version is a much stronger thesis! It answers the question, takes a specific position that others can challenge, and it gives a sense of why it matters.

Let’s try another. Suppose your literature professor hands out the following assignment in a class on the American novel: Write an analysis of some aspect of Mark Twain’s novel Huckleberry Finn. “This will be easy,” you think. “I loved Huckleberry Finn!” You grab a pad of paper and write:

Mark Twain’s Huckleberry Finn is a great American novel.

You begin to analyze your thesis:

• Do I answer the question? No. The prompt asks you to analyze some aspect of the novel. Your working thesis is a statement of general appreciation for the entire novel.

Think about aspects of the novel that are important to its structure or meaning—for example, the role of storytelling, the contrasting scenes between the shore and the river, or the relationships between adults and children. Now you write:

In Huckleberry Finn, Mark Twain develops a contrast between life on the river and life on the shore.

• Do I answer the question? Yes!
• Have I taken a position that others might challenge or oppose? Not really. This contrast is well-known and accepted.
• Is my thesis statement specific enough? It’s getting there–you have highlighted an important aspect of the novel for investigation. However, it’s still not clear what your analysis will reveal.
• Does my thesis pass the “how and why?” test? Not yet. Compare scenes from the book and see what you discover. Free write, make lists, jot down Huck’s actions and reactions and anything else that seems interesting.
• Does my thesis pass the “So what?” test? What’s the point of this contrast? What does it signify?”

After examining the evidence and considering your own insights, you write:

Through its contrasting river and shore scenes, Twain’s Huckleberry Finn suggests that to find the true expression of American democratic ideals, one must leave “civilized” society and go back to nature.

This final thesis statement presents an interpretation of a literary work based on an analysis of its content. Of course, for the essay itself to be successful, you must now present evidence from the novel that will convince the reader of your interpretation.

Works consulted

We consulted these works while writing this handout. This is not a comprehensive list of resources on the handout’s topic, and we encourage you to do your own research to find additional publications. Please do not use this list as a model for the format of your own reference list, as it may not match the citation style you are using. For guidance on formatting citations, please see the UNC Libraries citation tutorial . We revise these tips periodically and welcome feedback.

Anson, Chris M., and Robert A. Schwegler. 2010. The Longman Handbook for Writers and Readers , 6th ed. New York: Longman.

Lunsford, Andrea A. 2015. The St. Martin’s Handbook , 8th ed. Boston: Bedford/St Martin’s.

Ramage, John D., John C. Bean, and June Johnson. 2018. The Allyn & Bacon Guide to Writing , 8th ed. New York: Pearson.

Ruszkiewicz, John J., Christy Friend, Daniel Seward, and Maxine Hairston. 2010. The Scott, Foresman Handbook for Writers , 9th ed. Boston: Pearson Education.

You may reproduce it for non-commercial use if you use the entire handout and attribute the source: The Writing Center, University of North Carolina at Chapel Hill

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Thesis Statements and Topic Sentences

Learning objectives.

• Identify strategies for using thesis statements to predict content of texts

We’ve learned that a thesis statement conveys the primary message of an entire piece of text.  Now, let’s look at the next level of important sentences in a piece of text: topic sentences in each paragraph.

A useful metaphor would be to think of the thesis statement of a text as a general: it controls all the major decisions of the writing.  There is only one thesis statement in a text.  Topic sentences, in this relationship, serve as captains: they organize and sub-divide the overall goals of a writing into individual components.  Each paragraph will have a topic sentence.

It might be helpful to think of a topic sentence as working in two directions simultaneously. It relates the paragraph to the essay’s thesis, and thereby acts as a signpost for the argument of the paper as a whole, but it also defines the scope of the paragraph itself. For example, consider the following topic sentence:

Many characters in Lorraine Hansberry’s play  A Raisin in the Sun have one particular dream in which they are following, though the character Walter pursues his most aggressively.

If this sentence controls the paragraph that follows, then all sentences in the paragraph must relate in some way to Walter and the pursuit of his dream.

Topic sentences often act like tiny thesis statements. Like a thesis statement, a topic sentence makes a claim of some sort. As the thesis statement is the unifying force in the essay, so the topic sentence must be the unifying force in the paragraph. Further, as is the case with the thesis statement, when the topic sentence makes a claim, the paragraph which follows must expand, describe, or prove it in some way. Topic sentences make a point and give reasons or examples to support it.

The topic sentence is often, though not always, the first sentence of a paragraph.

• Revision and Adaptation. Provided by : Lumen Learning. License : CC BY-SA: Attribution-ShareAlike
• Topic Sentences. Authored by : Ms. Beardslee. Located at : http://msbeardslee.wikispaces.com/Topic+Sentences?showComments=1 . License : CC BY-SA: Attribution-ShareAlike
• Image of Parts of a Paragraph. Authored by : Enokson. Located at : https://flic.kr/p/ak9H3v . License : CC BY: Attribution

You can turn a subject into a central idea by focusing. Begin by reviewing what you know about your subject or by looking over notes you have made about it through listing, brainstorming, clustering, freewriting, or other prewriting activities.

With these details fresh in your mind, ask yourself:

What is my purpose in writing about this topic? What main point do I want to make about the topic?

WHAT IS MY PURPOSE?

Let's say you decide to write about high school. You might tell a story about your history class, compare two schools you attended, or argue that high schools should require foreign-language study.

If you want to compare the two high schools you attended, you can include details about their academic programs, athletic teams, students, or teachers. But you probably wouldn't argue that high schools should stay open in summer because doing so would take you outside your declared purpose.

WHAT IS MY MAIN POINT?

The next step in focusing is to decide what to say about your subject. What is the most interesting or important point you want to make about the schools you are comparing? The answer will be your main point, which ties all the details of the essay together.

Again, you turn an abstract subject into a central idea by stating a main point about that subject. If your main point is that entering a new school improved your attitude about education, your central idea might read:

Changing high schools made me a more serious student.

MAKING A POINT ABOUT A SUBJECT

In the box below, main points have been added to subjects to form working topic sentences or thesis statements.

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CHECK YOUR WORKING CENTRAL IDEA

After writing a working central idea, check it for qualities that will make it effective as the basis of a paragraph or essay. Ask yourself:

Is my central idea expressed in a complete thought? Is it specific? Does it express an idea that is worth developing in a full-length paragraph or essay? Is it limited enough to discuss in a short piece of writing?

Never confuse a central idea with a simple subject. Central ideas are expressed in complete sentences; subjects are words or phrases. Take these subjects:

The city zoo. Professional athletes. Majoring in foreign languages.

Can you write a paragraph or essay on one of these subjects? Only if you decide on the main point you want to make about it. Try these as working central ideas:

The city zoo is in great need of repairs. Professional athletes are overpaid. Studying foreign languages leads to many career choices.

A CENTRAL IDEA IS SPECIFIC

Make your central idea specific. The key to this step is to focus your main point as precisely as you can. That will give you a clear direction to follow as you develop an essay or paragraph. Take this central idea:

Jogging isn't for everybody.

It is correct, but it leaves questions unanswered. For example, what kind of people should not jog? What ill effects might jogging cause them? Now, try this:

Jogging can be harmful to people who suffer from heart, back, or joint problems.

A CENTRAL IDEA CONTAINS A MAIN POINT THAT IS WORTH DEVELOPING

Make sure your main point is an idea-not just a fact-that is worth developing in a full-length paragraph or essay. Read these two sentences:

The War Memorial is in Ottawa. The War Memorial has been severely vandalized.

The first sentence is a statement of fact; it does not call for discussion. The second lends itself to discussion. For example, you might describe what the vandals did, explain how much repairs will cost, or discuss ways to prevent future problems.

A CENTRAL IDEA IS LIMITED

Essays that beginning college or university students write usually contain approximately five to seven paragraphs of about 50 to 100 words. Therefore, you should limit your working topic sentence or thesis, making it as specific as you can. Otherwise, you won't be able to make your point clearly and completely.

LIMIT THE DISCUSSION TO A MANAGEABLE LENGTH

Let's say you want to convince someone to stop smoking. You might limit yourself to three reasons to stop smoking: the health risks, the costs, and its effects on others.

Here's your working thesis:

Break the habit: otherwise, it will ruin your health, empty your wallet, and annoy your friends.

Your working topic sentences, which will control the three body paragraphs, could be as follows:

Smoking causes cancer, emphysema, and heart disease. You can save hundreds or even thousands of dollars a year by quitting. Smoking is offensive to friends and family.

LIMITING YOUR CENTRAL IDEA FURTHER

You begin a rough draft by discussing illnesses caused by smoking. However, you soon realize that you can't cover all three reasons for quitting and still keep the essay short. So you limit yourself to the issue of health risks.

Your thesis statement becomes:

Break the habit: smoking causes heart disease, emphysema, and cancer.

Your topic sentences become:

Smoking weakens the heart and impairs circulation. Smoking is a major cause of emphysema. Smoking has been linked directly to cancer of the mouth and the esophagus.

DIFFERENCES BETWEEN A TOPIC SENTENCE AND A THESIS

A topic sentence is the sentence that expresses the central idea of a paragraph. A thesis statement is a sentence that expresses the central idea of an essay.

It's a good idea to decide the topic sentence of a paragraph after writing the working version of an essay's thesis. A topic sentence explains one aspect or point in the thesis and, therefore, should always be more specific and limited than a thesis.

REVISE AND REFINE THE CENTRAL IDEA AS YOU WORK

You can revise a central idea whenever you need to. The working version of a topic sentence or thesis statement provides only a starting point and a sense of direction. Don't be afraid to look back to your central ideas and rewrite them often. As a matter of fact, focusing is something you should do throughout the writing process.

Thesis Statement or Topic Sentence?

• High School

Occasionally at IEW our customer service team will receive questions about the differences between topic sentences and thesis statements. Hopefully this blog post will dispel any confusion between the two and empower you to help your students assail the essay in style!

Thesis statements summarize the central position of an entire essay and typically appear at the end of the introductory paragraph. Think of them as guideposts for the entire essay. They provide the reader of the essay an idea of the direction it will take. While beginning essay writers will typically write a single-sentence thesis statement, the thesis can be more than one sentence.

Depending upon the type of essay being written, a thesis statement’s emphasis will vary. In an expository essay, an essay that explains or informs, the thesis will narrow what is being explained. Thesis statements in narrative essays, which are essays that relate a story, paint an overall picture of the story that is being described and as such tend to be more personal in nature. Another type of essay, the argumentative essay, features thesis statements that underscore the writer’s opinion. In contrast, persuasive essays employ a somewhat different approach. In a persuasive essay, the thesis statement is oftentimes replaced with a question. This question serves to entice the reader to continue reading the essay in order to learn the writer’s position.

While you can think of thesis statements as guideposts for an entire essay, think of topic sentences as guideposts for individual paragraphs. Topic sentences appear in the body of the essay and are the first sentence in the paragraph. Not only do topic sentences focus the content in the paragraph, they also support the thesis statement made in the introduction.

So what might thesis statements and topic sentences look in a real-life example? Let’s consider a narrative essay prompt that asks the writer to describe someone who challenged him or her to work hard. A thesis statement might look something like this: “My gym teacher, Mr. Hernandez, never stopped encouraging me to do ‘hard things’ in high school.” This thesis statement helps the reader prepare to read some of the ways that Mr. Hernandez encouraged the writer. The topic sentences would support the thesis. Consider the following potential topic sentences:

• Mr. Hernandez encouraged me to enroll in an honors English class my senior year in high school.
• When he learned of an opportunity to help a family who had fallen on hard times, Mr. Hernandez reached out to me to help organize a clothing drive.
• Once I began to apply to colleges, Mr. Hernandez encouraged me to apply to a selective college and even offered to write a reference letter on my behalf.

These topic sentences all support the thesis of the paper by showing how Mr. Hernandez supported the writer of the essay. In the conclusion of the essay, the writer would reiterate the topics one more time before finishing the paper by emphasizing the most important point that underscores the thesis. That point might be something like this:

Mr. Hernandez saw something in me that I didn’t recognize in myself. He helped me to grow in confidence and take on challenges I would never have considered on my own. I’m excited to say that this next fall I’ll be attending ____________ University as an honors student majoring in English. And I even received an academic scholarship thanks in part to his letter of recommendation. I am so thankful he took the time to help me on my path!

What's the difference between a thesis statement and a topic sentence?

4 answers by expert tutors.

Brooke J. answered • 01/05/21

Helping Students Shine for Over 17 Years!

Both thesis statements and topic sentences help your audience understand the structure and main ideas of your essay. They differ in a few ways.

1) The thesis statement belongs in the introductory paragraph , while topic sentences belong at the beginning of body paragraphs . An essay will have just one thesis statement, but the number of topic sentences depends on the number of body paragraphs.

2) A thesis statement provides an overview of your entire essay. It contains your claim and your reasons .

Thesis statement = claim + "because" + reasons

Example: Capital punishment should be outlawed because it is immoral and does not deter crime.

claim : Capital punishment should be outlawed

reason #1 : it is immoral

reason #2 : it does not deter crime

3) A topic sentence tells your reader what the paragraph is about. Each reason in your thesis should correspond to a body paragraph.

Example: Capital punishment is immoral.

I know from reading this topic sentence that the paragraph will discuss how capital punishment is immoral.

Bonus Tip: Always revisit your thesis statement before submitting your essay. Make sure the reasons in your thesis match the reasons in your body paragraphs! Often writers will include reasons in their thesis statement only to find that their reasons evolve as they research and write their body paragraphs. If the reasons in your thesis statement don't match the reasons in your essay, your audience will become puzzled and frustrated.

Reza A. answered • 01/08/21

Persian/English Teacher

A good way to start a paragraph is with a short, simple  sentence  that introduces the main idea of the paragraph. Teachers often call this a ‘ topic   sentence".

A thesis statement, on the other hand, carries the main idea of your whole essay & therefore your stance for/ against the topic along with only mentioning your reasons.

Rachel P. answered • 01/05/21

Legal Professional Tutoring Law, Writing, etc.

Topic Sentence - usually at the beginning of every paragraph

Thesis Statement - usually at the end of the first/intro paragraph only

Topic Sentence - gives a glimpse as to what the paragraph will discuss

Thesis Statement - gives a glimpse as to what the entire paper will discuss

Karen B. answered • 01/05/21

ESL/ESOL, English Literature, TOEFL, Reading, Writing, and more

In my opinion, a topic sentence just states what the topic of your essay is. For example " The subject of my essay is on how the fashion and beauty industry influences women's body image." With a thesis statement, you need to present a stance on the topic and theory that you are trying to prove or options on how to change the situation. An example of this would be " The subject of my essay is on how the beauty industry negatively impacts women's body image and possible ways that the industry can adopt a more positive image."

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How To Write Better Sentences For A Research Paper?

• Smodin Editorial Team
• Updated: May 17, 2024

When you’re faced with writing a research paper, coming up with clear, impactful sentences can be a headache. This is especially true when you aim to convey complex ideas effectively.

If you struggle with sentence structure or cannot express your thoughts clearly, this guide will help you.

From basic grammar to using AI tools, we’ll look at how to craft sentences that resonate with readers and bolster your arguments.

Understand the Basics of Sentence Structure

Understanding the basics of sentence structure is important in academic writing. Every sentence in your research paper is a building block, contributing to the clarity and persuasiveness of your argument. A good sentence begins with a clear focus: every word should help convey your main idea directly and effectively.

First, recognize the importance of a strong subject and verb combination. The subject of your sentence performs the action, which is described by the verb. Ensuring these elements are clear and concise prevents ambiguity and keeps the reader on their toes. For example: “The experiment demonstrates…” is more direct than saying: “It is demonstrated by the experiment that…”

Think about the structure of your sentences. A well-crafted sentence follows a logical pattern: subject, verb, object. Following this structure can make your writing easier while enhancing the article’s readability.

Finally, remember that every sentence you write should support the main point of your paragraph. Think of each sentence as a mini-argument that adds to your thesis, logically linking your ideas. Mastering these basics is the first step in ensuring that every sentence you write contributes substance.

Techniques for Enhancing Sentences

No, we weren’t about to leave you hanging. Here are some practical techniques that you can use to make each sentence add value to your research paper.

Achieving clarity is extremely important, especially in scientific writing and within your thesis statement. The argument must be clear to the reader immediately. One common issue is the overuse of complex sentences that muddy your points. Counter this by focusing on using active voice rather than passive voice. Passive voice can simply obscure “who” is performing the action.

Here’s an example: “The researcher conducted the experiment” (active) is clearer than: “The experiment was conducted by the researcher” (passive).

Also, when explaining processes or results that occurred in your study, past tense should be used consistently to maintain clarity. Ensure every verb in your sentence drives home a clear idea, supporting the main argument. So, when it comes to clarity, be sure to choose the right verb tense.

Sentence structure is an important part of keeping your academic articles engaging. The general rule is to mix different types of sentences to keep the reader’s interest and highlight key points.

Start by varying the length of your sentences: pair a shorter, impactful sentence with a longer, more descriptive one. This can prevent your writing from becoming boring. After a punchy statement, for example, extend the next sentence with additional details.

It’s also important to experiment with different starts to sentences . Using an adverb, an adjective, or a phrase to lead your thoughts can be helpful. Discussing your topics with various verbs also adds rhythm and dynamics to your text. Do this carefully, though: getting too creative with your diction can make a sentence more complex than it needs to be.

Trust us, it’s worth the effort to rephrase sentences to avoid repetitive structures and ensure your ideas are expressed as clearly and vividly as possible. This is key to crafting a compelling narrative for your article.

Transitions

Powerful transitions are the glue that holds your essay together, guiding the reader smoothly from one idea to the next. The first sentence of each paragraph should serve as a bridge from the previous paragraph. The most important point of a new section should be introduced clearly and succinctly.

This helps the reader follow your argument without struggling through abrupt changes and disconnected points. For example, if one paragraph discusses a specific aspect of your research, the next could link that aspect to another, deepening the reader’s understanding of the topic.

Within a paragraph, each sentence should logically flow to the next , using transition words and phrases to signal the connection between ideas. Using transitions effectively clarifies the relationship between paragraphs and sentences. It also reinforces the overall structure of your paper, ensuring each point contributes meaningfully to your thesis.

Write Better Sentences With Smodin

Using Smodin in your academic writing can transform how you structure sentences in your research papers. Smodin is equipped with tools to refine your writing and ensure it’s crisp, engaging, and informative. With it, you can expect meticulous attention to detail. This allows you to present more details clearly in your discussions.

The subject of your paper is handled with precision, backed by artificial intelligence (AI) that enriches your argument with well-structured ideas and only the relevant evidence.

Smodin’s AI tools help maintain a sharp focus on the topic at hand and select the best words to articulate your ideas. This can be particularly useful when you must express many research findings within a small word limit. Plus, Smodin’s ability to generate references accurately and integrate them seamlessly enhances credibility and saves you tons of time.

We should also mention that Smodin’s suite of AI writing tools goes way beyond just restructuring sentences. You can also do plagiarism checks and receive comprehensive research assistance, supporting your writing at every step.

Final Thoughts

To become a “good writer,” you must master sentence structure and clarity. It won’t be easy at first, but you can do it!

Present your subject in a way that resonates with your reader, ensuring that each sentence builds on the last to form a coherent argument. Eventually, with practice and attention to detail, you’ll improve.

Remember, you can speed this up by leveraging the power of artificial intelligence. Smodin lets you start for free, so what are you waiting for?