Writers sometimes assume all paragraphs should be a certain length. In fact, acceptable paragraphs can range from one sentence to ten or more. More important than worrying about a specific length is striving to construct paragraphs that have both unity and coherence.

Paragraph Structure and Elements

In academic writing, the first sentence of a paragraph is usually the topic sentence. It states the main point to be developed or explained in the paragraph. Each subsequent sentence should be relevant to that topic, giving the paragraph unity. If you find your paragraph veering off to a different subject, you’ll either need to move that information elsewhere or delete it.

Each sentence in a paragraph should also be connected to the sentence that precedes it, giving the paragraph coherence. There are several ways to achieve coherence:

Ex.  Good writing comes from hard work [topic sentence]. But [transition] hard work [repetition of key word] never scared me. In fact [transition], I relish the challenge of creating something new, no matter how difficult [key word synonym] or time consuming. I have spent weeks on a few pages, months on an essay, and years on a book [parallel structure for similar items].

Beginning a New Paragraph

There is no set rule for when to begin a new paragraph, but, in general, start a new paragraph when you introduce a new topic, begin your conclusion, or change speakers when writing dialogue.

Professional and journalistic writing leans towards shorter paragraphs, but even in academic writing, paragraphs should not be so long that they overwhelm the reader. Varying the length of paragraphs is an effective means of emphasizing ideas—readers will notice a short paragraph set among longer ones. If your paragraph covers one idea but seems very long, you can break it into multiple paragraphs. For example, if you’re describing an experiment, you might cover all of the steps in the experiment in one paragraph, or, if you need more detail, you can describe each step in its own paragraph.


There are several ways to organize a paragraph. For example, try either coordination or subordination. In a paragraph arranged with coordination, each supporting sentence is of equal importance and has the same level of detail. The effect is somewhat like a list.

Ex. Good writing comes from hard work. First, you plan what you want to say, taking into account your audience. Next, you write down some ideas, do some research, and write a rough draft or outline. After that, you’ll have to write a few more drafts of your work, revising as your ideas develop and as others give you feedback. In the final stages, you should proofread and polish.

Or you can structure your paragraph using subordination. With subordination, each sentence further develops the ideas addressed in the sentences before it. The paragraph becomes more specific as it goes on, like a descending staircase, with each sentence taking you deeper into the subject.

Ex. Good writing comes from hard work. Generating a topic, researching it, and writing the text are all labor-intensive and time-consuming tasks. But many novice writers underestimate the amount of time and effort they need to spend rewriting. Most professional writers revise everything they write, often numerous times. I know one writer who typically goes through ten revisions, even for a simple one-page memo. Even with all that revision, though, many writers still feel their work is unfinished, even after publication.

You can combine coordination and subordination. For example, you might create a paragraph listing three equally important pieces of supporting information, each described in a separate sentence [coordination], but develop the last of the three supporting pieces of information in greater detail with one or two subsequent sentences [subordination].

You can also organize a paragraph by following one of several other patterns:

Developing Paragraphs

Once you have identified the topic of your paragraph, you need to develop your ideas. Consider these options: