2010年成人高考专升本英语定语从句备考指导

　　第一部分：语法讲解

　　在句中起定语作用，修饰某一个名词或代词，或修饰整个主句的从句，叫做定语从句。被定语从句修饰的词叫做先行词。定语从句通常在先行词之后，由关系词引导。关系词既起到联系主句和从句的作用，又代替先行词在从句中担任一定的语法成分。

　　如：I don’t like the people who are lazy.(people先行词，who关系词在从句中作主语)

　　关系词可以分为关系代词和关系副词。

　　引导定语从句的关系代词有：

　　先行词指人：who, whom

　　先行词指物：which

　　先行词指人或物均可：that, whose

　　引导定语从句的关系副词有：

　　when, where, why

　　1. 先行词指人，用关系代词who,whom

　　who在定语从句中可以作主语、宾语或表语，但是who之前不可用介词

　　He’s a teacher.

　　He has lived here for two years.

　　现在我们把这两句话合成一句话：

　　He’s a teacher who has lived here for two years.( 关系词who在定语从句中充当语法成分，并且指代先行词的内容)

　　现在我们把下面这个句子拆开：

　　The lady who is standing behind the counter served me.

　　The lady served me.

　　The lady is standing behind the counter.

　　如：The girl who plays the piano very well is his daughter.那位钢琴弹得很好的小姑娘是他的女儿。(who 作从句主语)

　　He is no longer the man who he used to be.他不再是以前那样的人了。(who在从句中作表语)

　　She’s the lady who I met yesterday.( who在从句中作动词met的宾语)

　　I like the people who I work with.我很喜欢和我一起工作的人。(who作介词with的宾语)

　　whom在定语从句中不能做主语，但可以作宾语。

　　如：I like the people with whom I work. (whom作介词的宾语)

　　Where is the student whom Professor Su praised at the meeting?苏教授在会上表扬的那个学生在哪里?(作动词宾语)

　　注：关系代词在介词后面，作介词宾语的时候，只能用whom指人。

　　2.表示人或物的所有关系，用whose

　　我们用whose表示所有关系，whose后面接名词，whose可以指人也可以指物。

　　如：

　　合并下列两句话：

　　He’s a writer.

　　His books sell good.

　　He’s a writer whose books sell good.(whose指的是the writer’s，源于名词所有格或者代词所有格即：物主代词的形式)

　　It was a meeting whose importance I did not realize at the time.(指物，a meeting)

　　先行词是物体。定语从句表达“ 。。。的“也可以用the +n + of which 的结构。如：上面这句话还可以说成：(知识的源头of所有格)

　　It was a meeting the importance of which I didn’t realize at the time.