應大家的要求，今天給大家分享雅思寫作中主體段落的構造。
其實，了解過雅思寫作的同學應該都知道，主題段落的結構包括：topic sentence, supporting sentences and specific example.看起來很簡單，然而在幫很多同學改作文的過程中，依然發現很多人不會寫topic sentence. 所以今天就先來說說topic sentence 到底怎麼寫。
按照以前語文課程中的說法，topic sentence 也就是一個段落中的中心句，主旨句。而這個段落中剩下的所有的句子，都是圍繞中心句來寫的，目的也是為了論證段落的中心思想。
需要注意的是，雅思寫作考的是思維的深度，而不是廣度。所有不能像四六級那樣，把你能想到的所有的論點都堆放在一個段落，然後中心句就是我認為某某事情有以下優點/缺點。例如：
I think there are three reasons why books are not attractive to pupils. Firstly, some textbooks tend to be too theoretic and abstract. Many students find them too difficult to follow and obscure to comprehend. Secondly, contrast to films and other TV programs, novels or non-fiction books are filled with text and sometimes verbose, making readers feel worthless to finish them. Thirdly, amount of books using in curriculum were published several years ago, the content of them likely to be outdated and irrelative to daily life. For example, they can not tell students current affairs that are happening all over the world.
我所改過的作文中，像這位小姐姐一樣犯這個錯誤的還不止兩三個。如果考試中這樣寫，會被認為沒有邏輯，因為你給出了一大堆論點，可是卻沒有論證，那麼考官怎麼能被你說服，認為你的論點可以支持你在開頭段落中給出的觀點？
所以在主體段落的寫作中，每個段只有一句中心句，代表著每段只有一個論點。
雅思寫作中，中心句是每個主題段落開頭的第一句話，讀完這句話，考官就能知道你這一段所討論的論點。因此，topic sentence= the topic +the reason/ main idea
For example:
In many countries, schools have severe problems with student behavior. What do you think are the causes of this? What s solutions can you suggest?
例如在這道題裡面，我的一個觀點是一些外部因素比如電視，網絡等導致了學生行為存在嚴重的問題。所以
Topic: the cause of problematic behaviors for students
Reason/ main idea: external factors such as TV shows and internet media
把兩個合併起來，我的topic sentence 可以寫成：one of the predominant factor, which leads to the problematic behaviors for students, is the bad influence from some external parties such as TV shows and internet media.
更簡單一點，可以寫：one of the cause of problematic behaviors for students is the bad influence from external parties such as TV shows and internet media.
關於topic sentence 暫時就想到這麼多，各位對這方面還有什麼疑問的話或者還有什麼想知道的就給我留言。