限制性定语从句和非限制性定语从句(基础)

限制性定语从句：定语从句和关系词关系非常紧密，删掉定语从句后，整个句子意思会改变。

非限制性定语从句：定语从句和关系词关系不是很紧密，删掉定语从句后，整个句子意思不会改变，定语从句只起到补充说明意义；

 

非限制性定语从句：先行词后面有一个逗号；

限制性定语从句:

1.先行词是前面的整句话；

2.which引导非限制性定语从句只能放在后面，as只能放在句子前面；

 

只用which不用that

1.非限制定语从句中，即逗号之后。

 

2.介词后面

We depend on the land,from which we can get our food.

 

只用that不用which

1.先行词是不定代词，包括all,anything,nothing,the one,much,little

Have you taken down everything that Mr.Lee has said?

 

2.先行词出现the only,the very

This is the only way that we can think out.

 

3.先行词出现序数词和形容词最高级

This is the best film that I have ever seen.

 

4.先行词中即有人又有物

They are talking about the school and the teachers that they visited yesterday.