A paragraph is a group of sentences about one main idea. It is the basic building block of essays, reports, letters and exam answers. If you can write a good paragraph, you can write almost anything.
Many students write paragraphs that are too long, too short or that jump between ideas. The good news is that a strong paragraph follows a simple pattern. Once you learn it, your writing becomes clearer and easier to mark.
This guide shows you how to write a paragraph step by step, with a structure you can follow, a full example and tips for school exams.
What Is a Paragraph?
A paragraph is a short piece of writing that develops one main idea. Every sentence in it should support that idea. When you move to a new idea, you start a new paragraph.
The Purdue Online Writing Lab describes a paragraph as a group of sentences that work together to support one point. Its page On Paragraphs is a helpful read if you want more detail.
The Three Parts of a Paragraph
Most good paragraphs have three parts:
1. Topic Sentence
The topic sentence tells the reader what the paragraph is about. It is usually the first sentence. It should be clear and not too broad.
- Weak: Trees are things.
- Strong: Trees are important for our environment in many ways.
2. Supporting Sentences
Supporting sentences explain the topic sentence. They give reasons, facts, examples or details. Most school paragraphs need three to six supporting sentences.
3. Concluding Sentence
The concluding sentence closes the paragraph. It repeats the main idea in new words or gives a final thought.
You can remember this as a sandwich: the topic sentence and the concluding sentence are the bread, and the supporting sentences are the filling.
How to Write a Paragraph Step by Step
Step 1: Choose One Main Idea
Decide exactly what you want to say. If your topic is “my school”, you might choose one idea, such as the school library, the teachers or the playground. Do not try to cover everything in one paragraph.
Step 2: Brainstorm Points
Write down quick notes. Ask yourself the six question words: who, what, when, where, why and how. This is a very useful trick for paragraph questions in Bangladeshi board exams, where questions often give these prompts.
Step 3: Write the Topic Sentence
Turn your main idea into one clear sentence. For example: Our school library is the best place to study and learn.
Step 4: Add Supporting Sentences
Use your notes to explain the main idea. Put your points in a logical order, such as time order or most important to least important.
Step 5: Use Linking Words
Linking words help your sentences flow. Some useful ones are:
- To add: also, in addition, moreover, besides
- To give examples: for example, for instance, such as
- To show contrast: however, but, on the other hand
- To show result: so, therefore, as a result
- To show order: first, then, next, finally
Linking words make your paragraph cohesive, which means the ideas hold together. Purdue OWL gives more help in its guide to revising for cohesion.
Step 6: Write the Concluding Sentence
End with a sentence that sums up the idea. For example: For these reasons, the library is my favourite part of the school.
Step 7: Check and Edit
Read your paragraph again. Remove any sentence that does not support the main idea. Check spelling, grammar and punctuation.
A Full Paragraph Example
Topic: Our School Library
Our school library is the best place to study and learn. It is on the second floor of the main building, so it is quiet and away from the noise of the playground. The library has more than two thousand books on science, history, literature and religion. There are also newspapers and magazines that help us know about the world. The librarian is very kind and helps us find the books we need. Students can borrow books for one week, so we can read at home too. Besides, the large windows give plenty of light and air, which makes reading comfortable. For all these reasons, the library is my favourite part of our school.
Look at the parts:
- Topic sentence: the first sentence.
- Supporting sentences: location, books, newspapers, librarian, borrowing and windows.
- Concluding sentence: the last sentence.
How Long Should a Paragraph Be?
There is no single rule. In school, a paragraph is often between 100 and 200 words. Exam questions may ask for a set number of words, so always follow the instructions.
In essays, avoid paragraphs that are only one sentence or that run for a whole page. Purdue OWL’s page on paragraph length explains when to break a long paragraph into two.
Types of Paragraphs
Paragraphs can have different purposes:
- Descriptive: describes a person, place or thing, such as A Rainy Day.
- Narrative: tells a short story or event, such as A Memorable Journey.
- Expository: explains or informs, such as How to Grow Rice.
- Persuasive: tries to convince the reader, such as Why We Should Plant More Trees.
The structure stays the same for all types. Only the content and tone change.
Common Paragraph Mistakes
- No clear topic sentence. The reader cannot tell what the paragraph is about.
- Too many ideas. Jumping from the library to the canteen to sports confuses the reader.
- Repeating the same point. Saying “the library is good” five times adds nothing.
- Very long sentences. Short, clear sentences are easier to read and mark.
- Memorised paragraphs that do not fit the question. Examiners notice when a learned paragraph does not answer what was asked.
Tips for Writing Paragraphs in Exams
- Read the question carefully and underline the key words.
- Spend two minutes planning before you write.
- Answer the prompt questions if they are given.
- Keep your handwriting neat and leave space between words.
- Leave one minute at the end to check spelling and full stops.
To see a full exam-style example, read our traffic jam paragraph for classes 6 to 10 and HSC. To make each sentence sharper, try our tips for writing clear and concise English sentences.
Practice Topics
Try writing a paragraph on each of these topics. Use the three-part structure every time.
- My Favourite Teacher
- A Village Market
- The Importance of Reading
- Mobile Phones in Daily Life
- A Winter Morning
- Why Exercise Is Important
Frequently Asked Questions
How many sentences are in a paragraph?
Most paragraphs have five to eight sentences: one topic sentence, three to six supporting sentences and one concluding sentence.
What is a topic sentence?
It is the sentence that states the main idea of the paragraph. It usually comes first.
Should I indent a paragraph?
In handwritten school work, indenting the first line is common. In typed work, many writers leave a blank line between paragraphs instead. Follow your teacher’s style.
Conclusion
Writing a paragraph is a skill you can learn quickly. Choose one idea, state it in a topic sentence, support it with details and close with a concluding sentence. Practise with a new topic every day, and your writing will improve fast.
Good paragraphs also depend on well-built sentences. Learn more in our guide to structuring sentences in English grammar.
