四、限制性定语从句只能用that的几种情况

1.如果先行词是all，much，little，anything，something，nothing，everything，none，some等不定代词时，关系代词一般只用that，不用which。

Is there anything that I can do for you?

我能为你做些什么吗？

2.如果先行词被the only，the very，the right，the same，the last，the best等词修饰时，关系代词常用that(指人时，还可以用who)。

This is the very book that I want to find.

这就是我想找的那本书。

That is the best film that we have seen.

这是我们看过的最好的电影。

I was the only person in my office that/who was invited.

我是我们办公室唯一被邀请的人。

3.当先行词被all，every，no，some，any，little，much修饰时。

All the people that are present burst into tears.

在场的所有人都哭了。

You can take any seat that is free.

你可以坐任何空着的座位。

4.当先行词是序数词或形容词最高级或被序数词或形容词最高级修饰时。

When people talk about Hangzhou，the first that comes to mind is the West Lake.

当人们谈及杭州时，第一个想到的就是西湖。

It is the first foreign book that I have ever seen.

这是我看过的第一本外文书。

This is the most beautiful flower that I have seen.

这是我见过的最美的花。

5.在there be句型中，常用that。

There is a man that lives in that village.

在那个村庄里住着一个人。

6.先行词既有人又有物时，关系代词用that。

The boy and the dog that are in the picture are very lovely.图画中的小男孩和小狗非常可爱。

7.当主句是以who或which开头的特殊疑问句时，关系代词用that。

Which are the books that you bought for me?

哪些书是你给我买的？

五、限制性和非限制性定语从句

定语从句有限制性和非限制性两种。限制性定语从句是先行词不可缺少的部分，去掉它主