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1、定语从句重难点复习性讲练知识讲解：2关系代词主语动宾介宾 定语人whothatwho whomthatwhomwhose (某人的)=of whom the物which thatwhichwhose(某物的)=of which thewhose 在定语从句中作定语，表示引导词与 whose 后的名词为所属关系。whose多指人，也可指物，可分别与 of which/whom the互换使用。This is the book whose cover is blue.This is the book of which the cover is blue.This is the book the c
2、over of which is blue. 关系副词表示从句动作发生在某时：when=at/on/in + which表示从句动作发生在某地：where=at/on/in + which表示从句动作发生的原因：why=for + which一、何时用关系副词when, where, why引导定语从句？ when 引导定语从句:先行词是表示时间的名词而且是从句动作发生的时间时，用when引导定语从句。Ill never forget the day when (= on which ) I met you.This was the time when ( =at which ) he lef
3、t for Beijing .We will put off the outing until next week, when (=in which) we wont be busy.where 引导定语从句:先行词是表示地点的名词或含有地点意义的抽象名词而且是从句动作发生的地点时，用where引导定语从句。This is the town where (= in which ) I spent my childhood.The table at which she is sitting is a new one.Ill show you the point where you failed.
4、why引导定语从句:先行词是reason并且从句是表示结果时，用why引导定语从句。This is the reason why ( = for which ) I didnt come here.比较：The reason _ she gave was not true.特别注意：当定语从句缺主语或宾语才直接用which或that引导定语从句。The library _ students often study was on fire last night.The library, _ was built in the 1930s,needs repairing.The library _
5、you visited yesterday was built in 1990.Ill never forget the day _ we first met in the park.Ill never forget the time _ I spent on campus.Ill never forget the time _ was spent with you.二、介词+关系代词应注意的情况:1. who、that 不能用于介词之后The man who/whom you spoke to was a scientist. The man to _ you spoke was a sci
6、entist.The city that/which she lives in is far away. The city in _ she lives is far away.2. 在固定短语中介词不能提前Is this the watch that you are looking for? The old man whom I am looking after is better.三、如何确定介词？把先行词接到从句谓语后面去,看需要什么介词。1、看定语从句中动词与介词的搭配He is the man _ whom I think you can depend. The house _ wh
7、ich he paid 100,000 yuan is very beautiful.2、看定语从句中形容词与介词的搭配He referred me to some reference books _ which I am not very familiar.This is the hero _ whom we are proud.3、根据先行词判断，所用的介词与先行词搭配The school _ which I study is the No. 11 high school.The rate/speed _ which wild animals are being destroyed has
8、 increased.The age_ which children can go to school is seven.4.根据从句中动词与先行词搭配来选用介词，这时是两者兼顾。He has lost the key to the box _ _the papers are kept. My glasses,_ _I was like a blind man, fell to the ground and broke.His bike_ _ he went to work was stolen last night.5.名词/代词/数词+ of +which/whomThe committe
9、e consists of 20 members, 5 of _ are women.The book contains 50 poems, most of _ was written in 1930s.There are two left, one of _ is almost finished ,and the other of _ is not quite. I have a sentence , the meaning of _ I dont understand.四、非限制性定语从句和单句的比较1. I am reading Harry Porter， _is an interest
10、ing book. I am reading Harry Porter，and _is an interesting book.I am reading Harry Porter; _is an interesting book. 2. He failed in the exam, _made his parents angry. He failed in the exam, and _made his parents angry.He failed in the exam; _ made his parents angry.3. He has two sons, both of _ are
11、teachers.He has two sons, and both of _ are teachers.He has two sons; both of _ are teachers. He has two sons. Both of _ are teachers.4. It might rain tomorrow; in _ case well have to put off the sports meeting until next Friday. It might rain tomorrow, in _ case well have to put off the sports meet
12、ing until next Friday.5. They stayed with me for two weeks, during _ time they drank all the bill I had. They stayed with me for two weeks; during _ time they drank all the bill I had.五、as引导定语从句1. as 引导的限定性定语从句（1）This is the same book _ I lost yesterday. 这本书和我昨天丢的那本一模一样。This is the same book _ I los
13、t yesterday. 这本书就是我昨天丢的那本。注意：当先行词被the same 修饰时，引导词用as和that时意义不同。（2）This is such an interesting book _ we all like. This is so interesting a book _ we all like. 这是大家都喜欢的如此有趣的一本书。(定语从句)This is such an interesting book _we all like it. This is so interesting a book _we all like it.这本书如此有趣，大家都喜欢。(结果状语从句
14、)2. as 引导的非限制性定语从句_ is known to us all, the earth is round. The earth is round, _ we all know._ is known to us all that the earth is round. The earth is round; _ is known to us all._ is known to us all is that the earth is round.注意：非限定性定语从句在句首时只能用as，另外，as有“正如”之意，而which只有“这一点，这件事”的意思。比较：He married again, _ we expected. He married again, _ was beyond our expectation.3. as 与which的区别：只能用as的情况：(1).固定句型：the same .as ; su
