A paragraph is the building block of every piece of writing, from a school answer to a university essay to a work email. If you can write one clear paragraph, you can write anything longer, because longer writing is just good paragraphs in a sensible order. This guide covers the structure, the format schools expect, four model paragraphs you can learn from, a six-step method, and 100 topics to practise with.
Write a paragraph now
Pick a topic, start the timer and write. When the time is up, compare yours with the four example paragraphs below.
What is a paragraph?
A paragraph is a group of sentences about one main idea. It has three parts:
| Part | What it does | Example (topic: trees in cities) |
|---|---|---|
| Topic sentence | States the main idea, usually first | Every city needs more trees. |
| Supporting sentences | Explain it with reasons, facts, examples and details | Trees cool the streets in summer, clean the air and give birds a home. In my own city, the shady roads are always the busiest. |
| Concluding sentence | Sums up or repeats the idea in new words | A greener city is a cooler, healthier place to live. |
Paragraph writing format
At school, a paragraph usually has a title and one block of text. A common format:
Title
Short, centred or on its own line: “Importance of Trees”, “My Best Friend”.
First line indented
Start the paragraph a few spaces in from the margin (or leave a blank line before it, in typed work).
Topic sentence
The main idea, in one sentence.
Three to five supporting sentences
Each adds a reason, example or detail.
Concluding sentence
Bring the reader back to the main idea.
| Level | Usual length |
|---|---|
| Primary school (classes 1–5) | 5–6 simple sentences, about 50–80 words |
| Middle school (classes 6–8) | 6–8 sentences, about 100–120 words |
| Secondary school and above | 6–10 sentences, about 120–150 words |
These are typical; always follow the word limit your teacher or exam sets.
How to write a paragraph in 6 steps
1. Choose one main idea
Narrow the topic: not “Technology” but “How my phone helps me study”.
2. Write the topic sentence
State the idea clearly, in one sentence. Everything else will support it.
3. List three supporting points
Reasons, facts, examples or details. Jot them down before you write.
4. Write the supporting sentences
One or two sentences for each point, joined with linking words: first, also, for example, however, as a result.
5. Close the paragraph
Repeat the main idea in new words, or say why it matters.
6. Read it again
Cut any sentence that is off the topic, and check verbs, articles and spelling.
Four example paragraphs
One of each common type, with the parts labelled.
1. Descriptive: My favourite place
| Part | Text |
|---|---|
| Topic sentence | My favourite place is the small library at the end of my street. |
| Support | It is a quiet room with tall wooden shelves and a window that looks onto a mango tree. In the afternoon, sunlight falls across the reading tables, and the only sounds are pages turning and the old fan above the desk. The librarian knows every regular reader by name and always keeps the newest magazines for us. |
| Conclusion | Whenever I need peace or a good book, that little library is where I go. |
2. Narrative: A day I will never forget
| Part | Text |
|---|---|
| Topic sentence | The day our school bus broke down on a hill road taught me how kind strangers can be. |
| Support | It was raining heavily, and forty of us were stuck for three hours with no food. Then a family from a nearby village walked up with tea, bread and blankets. They refused any money and stayed until another bus came. |
| Conclusion | I still remember their smiles, and I try to help others the way they helped us. |
3. Expository: Why sleep matters for students
| Part | Text |
|---|---|
| Topic sentence | Enough sleep is one of the simplest ways for a student to learn better. |
| Support | While we sleep, the brain sorts and stores what we studied during the day. A tired student also concentrates less, makes more careless mistakes and remembers less in exams. Most teenagers need eight to ten hours a night, yet many get far fewer because of late-night screens. |
| Conclusion | Going to bed on time is not lazy; it is part of studying. |
4. Persuasive: Everyone should learn to swim
| Part | Text |
|---|---|
| Topic sentence | Every child should learn to swim before leaving school. |
| Support | First, swimming is a life skill that can prevent drowning near rivers, lakes and the sea. It is also one of the best forms of exercise, working the whole body without strain on the joints. Finally, it builds confidence: a child who can swim is ready for many adventures. |
| Conclusion | For safety, health and confidence, swimming lessons should be part of every school year. |
Which part of the paragraph is it? A quiz
Each sentence comes from a paragraph. Is it the topic sentence, a supporting sentence or the concluding sentence?
100 paragraph writing topics
Grouped by theme. Narrow a broad one before you start (“Importance of Water” → “How my family saves water”).
Everyday life
- My daily routine
- My favourite food
- A rainy day
- My best friend
- My mother
- My father
- My grandparents
- My favourite season
- A visit to a market
- My hobby
- My pet
- Our neighbours
- A day without electricity
- My favourite festival
- Sunday at home
- My room
- A trip to the zoo
- My favourite game
- A birthday party
- Cooking with my family
School and learning
- My school
- My favourite teacher
- My favourite subject
- The school library
- Sports day
- A school trip
- Annual day at school
- The importance of discipline
- Homework: help or burden?
- Learning a new language
- The value of reading
- Online classes
- My first day at school
- Exams and stress
- The importance of punctuality
- A lesson I will never forget
- Why I love science
- The school canteen
- Group projects
- What I want to be when I grow up
Nature and the environment
- Importance of trees
- Save water
- Air pollution
- Plastic pollution
- Climate change
- A walk in the park
- The beauty of nature
- Rainwater harvesting
- Wildlife conservation
- The monsoon
- A garden I love
- Recycling at home
- The ocean
- Clean energy
- The sunrise
- Birds in my neighbourhood
- A river near my town
- Global warming
- Saving electricity
- Keeping our streets clean
People and places
- My hometown
- A city I want to visit
- A famous monument
- My role model
- A doctor I admire
- Farmers
- Soldiers
- Village life
- City life
- A hill station
- A crowded railway station
- A hospital visit
- A local hero
- Grandparents’ stories
- A museum visit
- The life of a postman
- Women in sport
- A shopkeeper I know
- A beach holiday
- Teachers’ Day
Technology and society
- Mobile phones
- The internet
- Social media
- Artificial intelligence
- Online shopping
- Video games
- Digital payments
- Screen time
- Robots in daily life
- Space travel
- Junk food
- Road safety
- Healthy lifestyle
- The importance of sports
- Kindness
- Honesty
- Friendship
- Time management
- Helping others
- Respect for elders
For longer pieces, see the essay topics; for speaking practice on the same themes, the English speaking topics.
Check your paragraph
Tick each point before you hand it in. Your ticks are saved in this browser.
Paragraphs on the Duolingo English Test
The Duolingo English Test never names “paragraph writing”, but its longer writing tasks are paragraphs under a timer, and the three-part shape is what they reward:
| DET task | What to write |
|---|---|
| Write About the Photo | One or two strong sentences: a topic sentence with detail is enough. |
| Interactive Writing | A clear paragraph: your view, two reasons with examples, a closing line; then a second, shorter answer to a follow-up. |
| Writing Sample | One or two paragraphs in five minutes, each with its own main idea. |
Practise them under time in the writing section test or a full mock test, and see how to write an opinion essay for the longer form.
Questions people ask
What is paragraph writing?
Writing a group of sentences about one main idea, with a clear shape: a topic sentence that states the idea, supporting sentences that explain it with reasons, examples or details, and a concluding sentence that sums it up. It is the basic skill behind every longer piece of writing.
What are the three parts of a paragraph?
The topic sentence (the main idea), the supporting sentences (reasons, facts, examples, details) and the concluding sentence (a summary or a final thought that returns to the main idea). Each part has one job: the topic sentence tells the reader what the paragraph is about, the middle proves it, and the ending closes it so the next paragraph can start a new idea.
What is a topic sentence?
The sentence that states the main idea of a paragraph, usually the first one. A good topic sentence is specific enough to be supported in a few sentences: “Every city needs more trees” works; “Trees are things” does not. Try to keep it to one clear sentence of about 10 to 20 words.
How many sentences are in a paragraph?
Usually five to eight: a topic sentence, three to five supporting sentences and a concluding sentence. Very short paragraphs (two or three sentences) are common in news writing and online; school and exam paragraphs are usually longer. A paragraph ends when its idea is finished, not when it reaches a set number.
How long should a paragraph be?
About 100–150 words for most school and exam paragraphs, or 50–80 words for younger students. Follow the word limit you are given; what matters more than length is that every sentence supports the one main idea. If a paragraph runs well past 150 words, it usually holds two ideas and should be split.
What is the format of paragraph writing?
A title on its own line, then one block of text with the first line indented: topic sentence, supporting sentences, concluding sentence. In typed work, a blank line between paragraphs can replace the indent. Do not leave a line between sentences, and keep the whole paragraph about one idea from start to finish.
What is a good paragraph writing example?
“Every city needs more trees. Trees cool the streets in summer, clean the air and give birds a home. In my own city, the shady roads are always the busiest. A greener city is a cooler, healthier place to live.” It has a topic sentence, supporting details and a conclusion.
What are good paragraph writing topics for students?
Topics from everyday life and school work best because students know what to say: my best friend, my favourite teacher, a rainy day, importance of trees, my hobby, the school library, mobile phones, a festival I love. The list on this page has 100, grouped by theme.
How do I start a paragraph?
With a topic sentence that states your main idea directly: “My favourite place is the small library at the end of my street.” Avoid starting with “In this paragraph I will…”. A question or a short surprising fact can also work, as long as the main idea follows straight away.
How do I end a paragraph?
With a concluding sentence that repeats the main idea in new words or says why it matters: “A greener city is a cooler, healthier place to live.” Do not add a new idea in the last sentence; if you have one, it belongs in the next paragraph.
What are linking words in a paragraph?
Words and phrases that join sentences and show how ideas connect: first, also, in addition (adding), for example, for instance (examples), however, on the other hand (contrast), as a result, so (results), finally, in short (ending). Use one where the link between two ideas needs showing; a linking word in every sentence sounds mechanical.
What is a short paragraph?
A paragraph of about three to five sentences or 50–80 words, still with a topic sentence, support and a closing sentence. Short paragraphs are common for younger students, online writing and timed tasks such as the Duolingo English Test’s writing questions.
What are the types of paragraphs?
Four common types: descriptive (describes a person, place or thing), narrative (tells what happened), expository (explains or informs) and persuasive (argues a point). The four example paragraphs on this page show one of each. Most school and exam topics ask for expository or persuasive paragraphs, so practise those two most.
What is unity in a paragraph?
Every sentence is about the paragraph’s one main idea. A sentence that wanders onto another subject breaks unity, even if it is interesting. Reading your paragraph and asking “does this support the topic sentence?” for each sentence is the quickest check.
How is paragraph writing tested on the Duolingo English Test?
Indirectly but constantly. Interactive Writing and the Writing Sample ask for short timed answers that are graded on content, structure and accuracy, so a clear three-part paragraph scores better than a long, loose one. Write About the Photo rewards one well-built sentence.
Quick reference: Paragraph Writing at a glance
| Question | Answer |
|---|---|
| A paragraph | A group of sentences about one main idea. |
| Three parts | Topic sentence · supporting sentences · concluding sentence. |
| Topic sentence | The first sentence; it states the main idea. |
| Supporting sentences | Reasons, facts, examples or details that explain the main idea. |
| Concluding sentence | Sums up or repeats the main idea in new words. |
| Length | Usually 5–8 sentences, about 100–150 words. |
| Unity | Every sentence is about the main idea; cut anything that is not. |
| Linking words | First, also, for example, however, as a result, finally. |
| Format at school | A title, then one block of text with the first line indented. |
| On the DET | Interactive Writing and the Writing Sample reward clear, well-built paragraphs. |
Walk into the DET already knowing the room.