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人教2003课标版《Structures in Use、Grammar in Use》优质课PPT课件下载
2.先行词：
被定语从句修饰的词叫先行词。
3.关系词：
引导定语从句的词叫关系词。
关系词有关系代词和关系副词
关系代词有: that, which, who, whom, whose,
as等
关系副词有: when, where, why
关系词通常有下列三个作用：
A.引导定语从句； B.代替先行词； C.在定语从句中担当一个成分。
The man who is shaking hands with my father is a policeman.
（二）关系代词引导的定语从句
1.who 指人，在定语从句中作主语。
The boys who are playing football are from Class One.
Those who want to go to the museum must be at the school gate at 7 tomorrow morning.
Yesterday I helped an old man who had lost his way.
That is the teacher who teaches us physics.
2. whom 指人，在定语从句中做宾语，常可省略。
Mr Liu is the person ( whom ) you talked about on the
bus.
Li Ming is just the boy ( whom ) I want to see.
The professor ( whom ) you are waiting for has come.
The girl ( whom ) the teacher often praises is our monitor.
注意：关系代词 whom 在口语或非正式文体中常可用 who 来代替，也可省略。
The man ( whom / who ) you met just now is my old