定语从句专项讲解

You can take any (=whichever) seat that is free.

I hope the little that I can will be of some help to them.

比较 *This is one of the best novels that were published last year.

*This is the only one of the best novels that was published last year.

③先行词是序数词时或被序数词修饰时。

1.When we talk about Wuxi, the first that comes into mind is Tai Lake.

2.This is the third film that has been shown in our school this term.

④先行词是最高级或被最高级修饰时。

1.This is the best that can be done now.

2.The most important thing that should be done right now is how to stop him from going on. ⑤先行词既有人又有物，用which和who都不适合，这时宜用that. 如：

1.The writer and his novel that you have just talked about is really well known .

2.The rider and his bike that had run over an old woman were held up by the police.

⑥被修饰词为数词时.

1.Yesterday I caught two fish and put them in a basin of water .Now you can see the two that are still alive .

⑦如果有两个从句，其中一个关系代词已用which ,另一个关系代词宜用that，以避免语言的单调或重复。

Edison built up a factory which produced things that had never been seen before.

⑧疑问词是who或which，关系代词宜用that，以避免重复。

1. Which is the book that you like best?

2. Who is the man that is standing at the gate?

⑨主句是There be 结构，修饰其主句的定语从句宜用that 作关系代词. 如：

1. There is still a seat in the corner that is still free.

⑩被修饰成分为表语时，或者关系代词本身是定语从句的表语时,该关系代词宜用that .

1. That's a good book that will help you a lot.

2. My home village is no longer the place ( that ) it used to be .

定语从句中宜用which而不宜用that 的情况:

①当关系代词的前面有介词时.

1.A zoo is a park in which many kinds of animals are kept for exhibition.

2.Is this the room in which Mr. White lives?

②在非限制性定语从句中.

1.Crusoe's dog, which was are now very old, became ill and died .

2.More and more people are beginning to learn English, which is becoming very popular in our country. (which指代主句)

③在一个句子中有两个定语从句，其中一个定语从句的关系代词用了that, 另一个宜用which .

1. Let me show you the novel，that I borrowed from the library which was newly open to us.

2. At the station I bought some magazines that might help me to pass the time on the train and which I could pass on to others when I finished them.

④当关系代词后面带有插入语时.

1. Here's the English grammar which, as I have told you, will help improve your English. ⑤先行词本身是that, 宜用which .