由That引导的定语从句

3.由 that 引导的定语从句

that 在定语从句中可以指人或指物，在从句中作主语或宾语，但不能作介词宾语。例如：

This is the boy that broke the window.(作主语）

The letter that I received was from my father.(作宾语）

在下面几种情况下必须用 that 引导定语从句：

1）先行词是不定代词 all,few,little,much,something,nothing,anything等。例如：

All that we have to do is to practise every day.

Much that you have read is nonsense.

2)先行词被序数词或形容词最高级所修饰。例如：

The first lesson that I learned will never be forgotten.

This is the most interesting book that I have ever read.

3)先行词被 all,any,every,each,few,little,no,some 等修饰。例如：

I have read all the books (that) you gave me.

Any paper that you read will give the same story.

No man that has common sense can believe it.

4)先行词被 the only,the very,the same,the last 等修饰时。例如：

He is the only person that I want to talk to.

This is the very book that I want to buy.

5)先行词既有人又有物时。例如：

They talked of things and persons that they remembered.

The train ran over to a boy and his god that were just crossing the track.

6)当句中已有 who 时（为避免重复）。例如：

Who is the man that is talking to John?

7)用作关系副词，修饰表示时间的名词如 day,time,moment 等，代替 when 。例如：

It happened on the day that(when) I was born.