第1页，共26页 第一部分定语从句定义及概述第2页，共26页 先行词关系词 定语从句(1)定语从句：在复合句中作定语修饰主句中某一名 词或代词的从句叫定语从句2)先行词：被定语从句修饰的词，叫做先行词3)关系词：分为关系代词和关系副词，在从句中担当一定成分I will never forget the girl that I met yesterday in the street. 第3页，共26页 定语从句两个必须定语从句两个必须 ★ 先行词在从句中必须作一个成分；★ 先行词所作的成分必须空缺指点迷津】第4页，共26页 第二部分关系代词引导的定语从句第5页，共26页 项目项目关系词关系词关系词关系词先行词所指先行词所指关系词在从句中的作用关系词在从句中的作用关系代词关系代词thatthat人人/ /物物主语、宾语、表语主语、宾语、表语whichwhich物物/ /事事主语、宾语、表语主语、宾语、表语whowho人人主语、宾语主语、宾语whomwhom人人宾语宾语whosewhose人人/ /物物定语定语asas人人/ /物物/ /事情事情主语、宾语、表语主语、宾语、表语第6页，共26页。
1. 关系代词that的用法用法：既可指人也可指物，在定语从句中作主语、宾语或表 语，作宾语时常可省略 1)This is the factory that produces cars.(作主语,指物)2)The girl that spoke to me just now is my classmate. (作主语,指人) 3)The film (that) we saw yesterday is interesting. (作宾语，指物)第7页，共26页 2.关系代词which的用法用法：指物，在定语从句中作主语、宾语或表语，作宾语时 常可省略 1)China is a country whichwhich has a long history.(作主语)2)The car (whichwhich) my uncle had just bought was destroyed in the earthquake. (作宾语) 第8页，共26页 关系代词that的特权和禁区 1. 特权：行使特权的条件：（1）限定性定语从句； （2）介词没有提前2. 禁区：有两种情况下，关系代词不会用that,指物时用which；指人时用who/whom。
1）非限定性定语从句；（2）介词提前时名师指津】第9页，共26页 【特别提醒】 (1)先行词是最高级或被最高级修饰 This is the best book that I have ever read. (2)先行词是序数词或被序数词修饰The first book that I bought was about how to learn English.(3)先行词是all, much, little, none, few 等不定代词或由some, any, every, no等词构成的复合代词时）I did all that I could do at that time. There was little that the doctor could do for the patient.只用that 不用which的情况：第10页，共26页 (4)当先行词被the only, the very修饰时 The only thing that he can do is to say sorry to her. （5）先行词既有人又有物Do you know the things and persons that they are talking about?（6）主句已有疑问词who/ which时。
Which is the book that you like? Who is the woman that was praised at the meeting? Which is the T-shirt that fits me most?第11页，共26页 （7）当先行词在主句中作表语，而关系词在从句中也作表语时 He is no longer the man that he was ten years ago.Jinan is no longer the city that it was ten years ago.第12页，共26页 【【典题例证】】 The thought of going back home was ____ kept him happy while he was working abroad. A．that B．all that C．all what D．which√第13页，共26页 只用which不用that引导定语从句的情况： 1. 当关系代词前有介词时 A desert is a great plain in which nothing will grow. 2. 引导非限制性定语从句时。
The students was late for class 7 times a week, which made her teacher mad. 3. 一个句子中有两个定语从句时，为避免重复，一个用that，另一个宜用which 4. 当先行词本身是that时 That which I had known about made them surprised.第14页，共26页 用法：指人，在定语从句中作主语、宾语或表语，作宾语时常可省略 1)I know the man whowho spoke to you just now.(作主语) 2)She is not the girl whowho she was.(作表语) 3.关系代词who的用法第15页，共26页 . 4.关系代词whom的用法用法：指人，who的宾格，在定语从句中作宾语，常可省略，在口语中可用who或that代替1)Here is the man (whomwhom) you are looking for.2)The woman (whomwhom) you saw just now is our English teacher.第16页，共26页。
【特别提醒】关系代词who和whom的选择 Mr. Smith is the very man who/whom you are looking for. I have a friend who likes listening to classical music. Is that the man with whom you arrived yesterday?第17页，共26页 5. 关系代词whose的用法 用法：可指人，也可指物，在定语从句中作定语 1)This is the scientist whosewhose namename is known all over the world.(指人) 2)The room whose windowswhose windows face the east is mine. (指物）第18页，共26页 1.I was born in New Orleans, Louisiana, a city____ name will create a picture of beautiful trees and green grass in our mind. A.which B. of which C. that D. whoseＩwas born in New Orleans, Louisiana, a city the name will create a picture of beautiful trees and green grass in our mind.【典题例证】√第19页，共26页。
2. A person ______ e-mail account is full won’t be able to send or receive any e-mails. A. who B. whom C. whose D. whoever√第20页，共26页 6.关系代词as的用法 用法：既可指人，也可指物，在定语从句中作主语、宾语或表语它常用在the same…as…,such…as…,so…as…等句型中,as不能省略 （（1 1））SuchSuch teachers asas know Tom think him bright.(指人，作主语)（2）I’ll buy the samethe same dictionary as as you have.(指物，作宾语) 第21页，共26页 关系代词as的选择 一、当先行词中有so, such等修饰语时； 如： This is so good a book as I can hardly tear myself away from. Never promise such things as you can’t achieve. This is so good a movie _______ we all wish to see. This is so good a movie _______ we all wish to see it. asasthatthat【名师指津】第22页，共26页。
二、当定语从句置于句首时； 如： As is known to all, the earth travels around the sun once every year. As we had expected, the students who had cheated in the exams were punished. ____ is known to all that the earth travels around the sun once every year. A. As B. It C. That D. What √第23页，共26页 三、当先行词中有the same 修饰时，有时用that也有时用as来引导定语从句二者意思稍有不同 如：This is the same shirt as I wore yesterday. (这件衬衣和我昨天穿的那件一样意思是说并不是同一件)This is the same shirt that I wore yesterday. (这是我昨天穿的那件衣服同一件衣服) The students in New York are using the same textbooks as we are using. 第24页，共26页。
关系代词的省略 有两个条件： 一、限定性定语从句； 二、作宾语 Women _______ drink more than two cups of coffee a day have a greater chance of having heart disease than those ________ don’t. A. who ; 不填 B. 不填 ; who C. who ; who D. 不填; 不填【思路点拨】【思路点拨】【典题例证】【典题例证】√第25页，共26页 第26页，共26页。