一、that引導名詞性從句時(即主語從句、賓語從句、表語從句、同位語從句),在從句中無具體含義,只起連線作用,而且在從句中也不作任何句子成分.它所引導的從句的句子結構和意義是**的,而且從句一般是陳述一個事實.

例如:

①That she was able to come made us very happy.

②The news that our team has won the match is true.

我們隊贏了這場比賽的訊息是真的.

他沒來的原因是他病了.

當that引導的主語從句或賓語從句太長時,常用it作形式主語或賓語而把that從句放在後面.如:

①It is well—known that the earth is round.

眾所周知,地球是圓的.

②We find it necessary that we practise spoken English every day.

我們發現每天練習英語口語很有必要.

注意：

that引導的主語從句,表語從句以及同位語中,that不能省略.that引導的賓語從句,一般可以省去that,但在下面情況中不能省略——

1、在suggest,order等表示命令、請求、建議等動詞後的賓語從句中,不能省；

2、由and或but所連線的兩個引導的賓語從句時,第一個從句中的that可以省,第二個從句中的that不能省；

3、that引導的賓語從句,如果從句中還有其他狀語從句,引導賓語從句的that不能省略.

Tell him that if he is at home,I’ll call to see him.

二、that引導定語從句要注意以下幾點:

1、定語從句中缺主語,修飾人時用who /that,修飾物時用which /that引導.如:

Is this the factory which /that makes TV sets

The man who /that visited our school is from Australia.

2、從句中缺賓語,修飾人時用 who /whom /that或省略引導詞;修飾物時用which /that或省略引導詞.如:

Gone are the days which /that we spent together in the village.

He is the man who /whom /that I think to be worthy of our praise.

3、用that不用which的七種情況:

①先行詞前有形容詞最高階或序數詞修飾時,用 that不用which引導.如:

This is the best place that I have ever visited.

②先行詞為little,much,all,none,few,(the)one,something,everything,nothing,anything等不定代詞時,用that引導.如:

There is nothing in the world that can frighten him.

He told us about the people and the cities that he had visited.

④先行詞前有any,all,no,few,every,some,little,much,(the)very,(the)only,(the)last等詞修飾時,用 that引導.如:

This is the very coat that I need.

⑤先行詞為which時,為了避免重複,用that引導.如:

Which is the book that you bought yesterday

⑥先行詞在從句中作表語時,常用that引導.如:

Shanghai is no longer the city that it used to be in the 1930’s.

⑦當主句是There be…句型時,用that引導.

There are two tickets for the film that are for you two.

一、that引導名詞性從句時(即主語從句、賓語從句、表語從句、同位語從句),在從句中無具體含義,只起連線作用,而且在從句中也不作任何句子成分.它所引導的從句的句子結構和意義是**的,而且從句一般是陳述一個事實.