1、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 on the bus.(2) Mr. Ling is just the boy whom I want to see.注意：关系代词whom在口语和非正式语体中常用who代替，可省
2、略。(3) The man who/whom you met just now is my friend3.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.4. that指人时，相当于who或者whom；指物时，相当于which。在定语从句中做主语或者宾语，做宾语时可省略。(5) The number of the people that/who come to visit the city each year rises one million.(6) Where is the m
3、an that/whom I saw this morning?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 once lived in a house whose roof has fallen in.whose指物时，常用以下结构来代替(3) The classroom whose door is broken will soon be repaired.(4) The classroom the door of which is broken will soon be repai
4、red.(5) Do you like the book whose cover is yellow?(6) Do you like the book the color of which is yellow? 介词+关系代词引导的定语从句关系代词在定语从句中做介词宾语时从句常由介词+关系代词引导(1) The school (that/which) he once studied in is very famous.(2) The school in which he once studied is very famous.(3) Tomorrow I will bring here a m
5、agazine (that/which) you asked for.(4) Tomorrow I will bring here a magazine for which you asked.(5) Well go to hear the famous singer (whom/that/who) we have often talked about.(6) Well go to hear the famous singer about whom we have often talked.注意：1. 含有介词的动词短语一般不拆开使用，如：look for, look after, take
6、care of等(1) This is the watch which/that I am looking for. (T)(2) This is the watch for which I am looking. (F)2. 若介词放在关系代词前，关系代词指人时用whom，不可用who或者that；指物时用which，不能用that；关系代词是所有格时用whose(1) The man with whom you talked is my friend. (T)(2) The man with that you talked is my friend. (F)(3) The plane in which we flew to Canada is very comfortable. (T)(4) The plane in that we flew in to Canada is very comfortable. (F)
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