How to Write a Good Topic Sentence

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A good paragraph has one main idea. The main idea is what you want to say. It often goes in the first sentence. This sentence is called a topic sentence. A topic sentence tells the reader what your paragraph is about. It helps the reader follow your writing. A good topic sentence is short and clear. It does not need big words. For example, 'My favorite place is the park.' This sentence is simple. The reader knows the paragraph will be about the park. Another example is 'My best friend is kind.' The reader knows the paragraph will be about your friend. A topic sentence should not be too wide. 'Life is good' is too wide. It is hard to write about. A topic sentence should not be too narrow. 'I have a red pen' is too narrow. It gives only one small fact.

Look at a short sample paragraph. My favorite place is the park. It has tall trees and green grass. I can walk there with my family. I can play games with my friends. The park makes me happy. The first sentence is the topic sentence. The other sentences give details. They support the main idea. They help the reader see the park in their mind.

When you write, start with a clear topic sentence. Then add two or three details. Use simple words. Make each sentence short. Check that every sentence is about the main idea. If a sentence is not about the main idea, take it out. This makes your paragraph strong and easy to read. With practice, you can write good paragraphs step by step.