1. Structure a paragraph... Write a good topic sentence.
This is the first sentence of the paragraph. This sentence tells the reader the main idea.
How to Write a Topic Sentence?
There are several different topic sentence styles. There is no right or wrong answer. Here are two suggestions.

2. Structure a paragraph Subject: Favorite Sports
Write a topic sentence with three points. This sentence follows a pattern called parallel structure.
Subject: Favorite Sports
Three Points: soccer, biking, roller blading
Topic sentence: When I have some free time, I like to spend it outside playing soccer, riding my bike, or roller blading.

3. Structure a paragraph Subject: The Best Place for a Family Vacation
Three Points: good sights, pleasant location, cheap rooms
Topic sentence: The best place for a family holiday is Namhae Island because of the good sights, beautiful scenery and low-cost rooms.

4. The last sentence of the paragraph is important
The last sentence of the paragraph is important. It is like the candle on a birthday cake. Both of them make the product seem finished and complete. How can you have a birthday cake with no candles? We can ask the same question about a paragraph. How can a paragraph be complete without a concluding sentence?

5. The conclusion does not have to be long
The conclusion does not have to be long. Nor does it have to repeat everything from the first sentence. Some writers use a hook. That is a word or idea that links up with a theme or idea in the topic sentence.
What to write? It might be … a final thought or something that you learned.
We can also paraphrase...

6. Here is a sample paragraph
Here is a sample paragraph. How does the writer use a hook to connect the first and lasts sentences?
Walking down the street I noticed a new bookstore had opened in my neighborhood. The front of the store looks like an old English bookshop with a large wooden door that is surprisingly heavy. Just inside the main door, there is a small box with used books. Oddly, these books are on sale for $1 per kilogram. Near the back, there is a tall bookshelf with great classics like Shakespeare’s Romeo and Juliet. Near the cash machine, there is a rack with a good supply of magazines like The Economist, Time and Asia Weekly. I’ll be spending a lot of time in this book shop, which is right around the corner from my house.