新概念英语第一册第2版40-03

Lesson 121 The man in a hat

I bought two expensive dictionaries here half an hour ago, but I forgot to take them with me.

Who served you, sir?

The lady who is standing behind the counter.

Which books did you buy?

The books which are on the counter.

Did you serve this gentleman half an hour ago, Caroline?

He says he's the man who bought these books.

I can't remember.

The man who I served was wearing a hat.

Have you got a hat, sir?

Yes, I have.

Would you put it on, please?

All right.

Is this the man that you served, Caroline?

Yes. I recognize him now.

定语从句：

beautiful flower

a book on the desk

I saw the boy yesterday.

This is the boy.

This is the boy I saw yesterday.

I have a sister.

She lives in Paris.

I have a sister who lives in Paris.

关系代词的功能：

1 连接主句和从句 2 在从句中做句子成分。

定语从句就是由一个句子修饰限定另一个句子的中心词。被修饰限定的成分叫先行词。连接主句和从句的词叫关系代词。

关系代词的作用有两点：

1 连接主句和从句

2 在从句中从句子成分，作主语时不能省略，作宾语时可以省略。

关系代词

who, whom, whose, which, that

who

先行词是人 + who + 动词

The man is Mr.White.

The man has white hair.

The man who has white hair is Mr.White.

whose

先行词是人，whose + 名词

I have a friend.

His father is a teacher.

I have a friend whose father is a teacher.

whom

先行词是人，whom + 及物动词/不及物动词 + 介词

当介词提前的时候，关系代词不能省略。

The man is my uncle.

We met the man.

The man we met is my uncle.

The man whom we met is my uncle.

The man who met us is my uncle.

The man is my uncle.

I spoke to the man.