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In this lesson:
Topic Sentence | Supporting Sentences | Concluding Sentences | Details | Formality | Exercise #1
| In many languages, the fundamental unit of composition is the paragraph. A paragraph consists of several sentences that are grouped together. This group of sentences together discuss one main subject. In U.S. formal academic English, paragraphs have three principal parts. These three parts are the topic sentence, body sentences, and the concluding sentence. We will also talk briefly about details in paragraphs. The Topic Sentence A topic sentence usually comes at the beginning of a paragraph; that is, it is usually the first sentence in a formal academic paragraph. (Sometimes this is not true, but as you practice writing with this online lesson site, please keep to this rule unless you are instructed otherwise.) Not only is a topic sentence the first sentence of a paragraph, but, more importantly, it is the most general sentence in a paragraph. What does "most general" mean? It means that there are not many details in the sentence, but that the sentence introduces an overall idea that you want to discuss later in the paragraph. For example, suppose that you want to write a paragraph about the natural landmarks of your hometown. The first part of your paragraph might look like this:
Note how the first sentence, My hometown, Wheaton, is famous for several amazing geographical features,is the most general statement. This sentence is different from the two sentences that follow it, since the second and third sentences mention specific details about the town's geography, and are not general statements. Here are some examples of sentences that cannot be used as topic sentences. Can you figure out why they are inappropriate?
Sentence #2 is not appropriate as a topic sentence because it mentions two topics, not just one. Paragraphs are usually about one main thing and so their topic sentences should also be about only one main thing. The problem with sentence #3 is that it is toogeneral. It is also very boring! Would you like to read a paragraph with this topic sentence? Most people would not. We can rewrite sentences #2 and #3 in the following ways to make it better:
Consider again the above-mentioned, short paragraph:
When a reader reads a topic sentence, such as My hometown, Wheaton, is famous for several amazing natural features,a question should usually appear in the reader's mind. In this case, the question should be like, "What are the natural features that make Wheaton famous?" The reader should then expect that the rest of the paragraph will give ananswer to this question. Now look at the sentences after the topic sentence. We can see that the second sentence in the paragraph, First, it is noted for the Wheaton River, which is very wide and beautiful,indeed gives an answer to this question. That is, the second sentence gives some explanation for the fact that Wheaton is a famous town. Similarly, we can see that the third sentence also gives some explanation for the fact that Wheaton is famous by giving another example of an "amazing natural feature," in this case, Wheaton Hill. The second and third sentences are called supporting sentences. They are called "supporting" because they "support," or explain, the idea expressed in the topic sentence. Of course, paragraphs in English often have more than two supporting ideas. The paragraph above is actually a very short paragraph. At minimum, you should have at leastfive to seven sentences in your paragraph. Here we can see our paragraph about Wheaton with a few more supporting sentences in bold font:
The Concluding Sentence In formal paragraphs you will sometimes see a sentence at the end of the paragraph which summarizes the information that has been presented. This is the concluding sentence. You can think of a concluding sentence as a sort of topic sentence in reverse. You can understand concluding sentences with this example. Consider a hamburger that you can buy at a fast-food restaurant.* A hamburger has a top bun (a kind of bread), meat, cheese, lettuce, and other elements in the middle of the hamburger, and a bottom bun. Note how the top bun and the bottom bun are very similar. The top bun, in a way, is like a topic sentence, and the bottom bun is like the concluding sentence. Both buns "hold" the meat, onions, and so on. Similarly, the topic sentence and concluding sentence "hold" the supporting sentences in the paragraph. Let's see how a concluding sentence (in bold font) might look in our sample paragraph about Wheaton:
Not all academic paragraphs contain concluding sentences, especially if the paragraph is very short. However, if your paragraph is very long, it is a good idea to use a concluding sentence. Details in Paragraphs The short paragraph in this lesson is a fairly complete paragraph, but it lacks details. Whenever possible, you should include enough details in your paragraphs to help your reader understand exactly what you are writing about. In the paragraph about Wheaton, three natural landmarks are mentioned, but we do not know very much about them. For example, we could add a sentence or two about Wheaton river concerning HOW wide it is or WHY it is beautiful. Consider this revision (and note the additional details inbold):
Why are details important? Consider the example of the hamburger, mentioned above.* If the hamburger buns are the topic and concluding sentences, then the meat, the cheese, the lettuce, and so on are the supporting details. Without the food between the hamburger buns, your hamburger would not be very delicious! Similarly, without supporting details, your paragraph would not be very interesting. A Note on Formality. In addition to having a particular kind of structure, academic paragraphs (and multi-paragraph essays, which will be topic of another lesson) are different from "ordinary writing" (such as letter writing) in that certain kinds of expressions are not allowed. For example, in formal essays, you should not use contractions such as don't or aren't. Instead, you should write out the words in full, for example, do not and are not. Also, in formal essays you should avoid the first and second person. That is, do not use the pronouns I or you. The pronouns we and us are sometimes used in formal essays in some major fields, but in general you should not use these unless you are certain that they are customary in your field and/or your professor allows them. It is safer simply to use the third person.
Click here to return to the IEI TOEFL-prep Writing Main Menu *The metaphor of the hamburger is adapted from Reid, J.M. (1994). The Process of Paragraph Writing (2nd Ed.) This page was last updated on 4/4/00 Copyright (c) 2000 by F. Scott Walters |
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