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1、定语从句在复合句中修饰名词或代词的从句叫定语从句。被修饰的名词或代词叫先行词。引导定语从句的关系代词：who(whom),that,which,whose关系副词：where,when,why准关系代词：as,but,than1.由who,whom,whose引导This is the man who helped me.The doctor(whom)you are looking for is in the room.Do you know the man whose name is Wang Yu?Do you see the house whose windows are all br
2、oken?2.由which引导The building which stands near the river is our school.This is the book(which)you want.The room in which there is a machine is a workshop.3.由of which/whom引导Hes written a book the name of which Ive forgotten.An aircraft engine consists of thousands of parts,each of which has its import
3、ance.We interviewed 14 applicants for the post,none of whom we thought suitable.John often plays in a group of five children,three of whom he likes very much.3.由of which/whom引导在从句中作主语时，有以下两种结构：Do you see the house the windows of which/of which the windows are all broken?The 80 passengers,ten of whom
4、/of whom ten were British,all escaped without serious injury.4.由that引导This is the boy that broke the window.The letter that I received was from my father.下面几种情况必须用that引导先行词是不定代词all,few,little,much,something,nothing,anything等All that we have to do is to practise every day.Much that you have read is n
5、onsense.先行词被序数词或形容词最高级修饰The first lesson that I learned will never be forgotten.This is the most interesting book that I have ever read.下面几种情况必须用that引导先行词被all,any,every,each,few,little,no,some等修饰I have read all the books(that)you gave me.No man that has common sense can believe it.先行词被the only,the v
6、ery,the last修饰He is the only person that I want to talk to.This is the very book that I want to buy.下面几种情况必须用that引导先行词既有人又有物They talked of things and persons that they remembered.The train ran over to a boy and his dog that were just crossing the track.在疑问句中避免重复Who is the man that is talking to John
7、?Which was the hotel that was recommended to you?5.the way后接定语从句Thats the way(/)he spoke.that he did it.in which you answered the question.6.6.关系代词作表语用thatHe is no longer the simple-minded man(that)he was five years ago.Shes not the brilliant dancer(that)she used to be.7.7.关系副词when,where,whywhen:先行词
8、表时间At the time when I saw him,he was quite strong.Do you remember the day when he came to see you?Do you remember the days(that)we spent together?7.7.关系副词when,where,whywhere:先行词表地点This is the place where we lived for 5 years.You have reached the point where a change is needed.This is the house where
9、 he lived last year.This is the house(which)he visited last year.7.7.关系副词when,where,whywhy:先行词只有reasonCan you tell me the reason why you are so unhappy?I know the reason why he did so.I know the reason(that)he explained at the meeting.7.7.关系副词when,where,why=“介词 +which”I remember the day when/on whic
10、h the heat wave started.This is the place where/in which we used to live.High taxation is often the main reason why/for which governments fall.8.8.准关系代词assuch asIve never seen such a clever man as he is.They talked in such simple English as children could understand.They talked in such simple Englis
11、h that children could understand it.8.8.准关系代词asthe same asI like the same book as you do.This is the same bag as I lost yesterday.This is the same bag that I lost yesterday.8.8.准关系代词asas引导非限制性定语从句As we all know,he studies very hard.As is known to all,he is the best student in our class.He opposed th
12、e idea,as could be expected.as is said aboveas is often the caseas is reported in the newspaper8.8.准关系代词as非限制性定语从句中which和as的区别which引导的从句不能放在句首As is often the case,he is absent.He saw the girl,as/which he had hoped.as有“正如、就像”之意He is a foreigner,as I know from his accent.He has to work on Sundays,whic
13、h he doesnt like.9.9.准关系代词but否定意义，相当于who/which/that not先行词往往是否定形式There is no rule but has exceptions.There is no one but knows about this affair.There are few dictionaries but have a misprint or two.10.10.准关系代词thanDont give him more money than is necessary.He did more than was required of him.The really serious cases are fewer than have been suggested.HAVE FUN