初中英语知识点：定语从句的用法.doc

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1、中考英语定语从句讲解一、 定义：在复合句中，修饰某一名词或代词的从句叫做定语从句； 被定语从句 所修饰的词叫做先行词。如：1) The man who lives next to us is a policeman. 2) You must do everything that I do. 引导定语从句的词：关系代词that, which, who(宾格who, 所有格whose) 关系副词where, when、why关系词的作用：1、引导定语从句 2、代替先行词 3、在定语从句中担当一个成分单词作定语时通常放在它所修饰的词之前，作前置定语。短语和从句作定语时则放在所修饰的词之后，作后置定语

2、。 二、关系代词引导的定语从句1.who指人，在从句中做主语(1) The boys who are playing football are from Class One. (2) Yesterday I helped an old man who lost his way.2. whom指人，在定语从句中充当宾语，常可省略。 (1) Mr. Liu is the person (whom) you talked about. 注意：关系代词whom在口语和非正式语体中常用who代替，可省略。 (2) The man who/whom you met just now is my frien

3、d.3. which指物，在定语从句中做主语或者宾语，做宾语时可省略 (1) Football is a game which is liked by most boys. ( which 在句子中做主语) (2) This is the pen (which) he bought yesterday. ( which 在句子中做宾语)4. that指人时，相当于who或者whom；指物时，相当于which。在宾语从句中做主语或者宾语，做宾语时可省略。 (1) The people that/who come to visit the city are all here. (在句子中做主语)

4、(2) Where is the man that/whom I saw this morning? (在句子中做宾语)5. whose通常指人，也可指物，在定语从句中做定语 (1) He has a friend whose father is a doctor. (2) I lived in a house whose roof has fallen in.whose指物时，常用以下结构来代替The classroom whose door is broken will soon be repaired.=The classroom the door of which is broken

5、will soon be repaired.Do you like the book whose color is yellow?=Do you like the book the color of which is yellow? 注：that 用法(1)不用that的情况 (a) 在引导非限定性定语从句时。 (错)The tree, that is four hundred years old, Is very famous here. (b) 介词后不能用。 We depend on the land from which we get our food. We depend on th

6、e land that/which we get our food from. (2) 只能用that作为定语从句的关系代词的情况 (a) 在there be 句型中，只用that，不用which。 (b) 在不定代词，如：anything, nothing, the one, all等作先行词时，只用that，不用which。 (c) 先行词有the only, the very, the same, the last, just修饰时，只用that。 (d) 先行词为序数词、数词、形容词最高级时，只用that,不能用which。. (e) 先行词既有人，又有物时。 (f) 先行词指物，在主

7、句中作表语时。 (g) 为了避免重复。 (h)先行词是the way或the reason时，that可作关系副词，也可省略。 (i) 主句的主语是疑问词who /which时。 e.g. Is this the book that you borrowed in the library? 这是你在图书馆借的那本书吗？ Who that break the window should be punished 谁打碎了窗户都要受到惩罚 All that is needed is a supply of oil. 所需的只是供油问题。 Finally, the thief handed every

8、thing that he had stolen to the police. 那贼最终把偷的全部东西交给了警察。 三、关系副词引导定语从句 关系副词 关系副词：在句中作状语 关系副词=介词+关系代词 why=for which where=in/ at/ on/ . which (介词同先行词搭配) when=during/ on/ in/ . which (介词同先行词搭配) 1. where指地点，在定语从句中做地点状语用来表示地点的定语从句。 (1) Shanghai is the city where I was born. (2) The house where I lived t

9、en y ears ago has been pulled down. 2. when引导定语从句表示时间。在定语从句中做时间状语也可做连接词用 (1) I still remember the day when I first came to the school. (2) The time when we got together finally came.注表示时间“time一词的定语从句只用when引导，有时不用任何关系代词. By the time you arrived in London, we had stayed there for two weeks. 你到达伦敦时，我们在

10、那里已待了两个星期。 I still remember the first time I met her. 我仍然记得我第一次见到她。 Each time he goes to business trip, he brings a lot of living necessities, such as towels, soap, toothbrush etc。 3. why指原因 在定语从句中做原因状语 (1) Please tell me the reason why you missed the plane. (2) I dont know the reason why he looks u

11、nhappy today. 注意：关系副词引导的从句可以由“介词+关系代词”引导的从句替换 (1) The reason why/ for which he refused the invitation is not clear, (2) From the year when/in which he was going to school he began to know what he wanted when he grew up. 注：1）介词后面的关系代词不能省略。 2）that前不能有介词。 3） 某些在从句中充当时间，地点或原因状语的介词+关系词结构可以同关系副词when ,where和why 互换。 This is the house in which I lived two years ago. =This is the house where I lived two years ago. Do you remember the day on which you joined our club? =Do you remember the day when you joined our club? This is the reason why he came late. =This is the reason for which he came late.