1、一.定语从句的基本定义放在名词或代词后面，由关系代词或关系副词引导的修饰该名词或代词的从句叫定语从句。被修饰的词叫先行词。一.定语从句的基本定义The boy who is reading is Tom.先行词关系代词Hospital is a place where a doctor works.先行词关系副词二.关系词的分类1.关系代词2.关系副词关系代词在定语从句中作主语、宾语、表语和定语，常用的关系代词有：that,which,who,whom,whose关系副词在定语从句中作状语，常用的关系副词有：when,where,why二.关系词的分类三.关系代词的基本用法和注意点1.关系代词
2、的基本用法三.1.关系代词的基本用法关系代词 指代的先行词充当从句的成分who人主语、宾语whom人宾语which物主语、宾语that人或物主语、宾语、表语whose人或物定语 who指人,在定语从句中作主语或宾语。作宾语时，可省略。The man(who)I talked with is our teacher.A person who steals things is called a thief.whom指人,在定语从句中作宾语，可省略。The man(whom)I nodded to is Mr.Li.who,whom which 指物，在定语从句中作主语或宾语。作宾语时，可省略。Th
3、ese are the trees which were planted last year.This recorder（which）he is using ismade in Japan.whichHe is the man(that)I told you about.that 指人或物，在定语从句中作主语或宾语。作宾语时，可省略。A plane is a machine that can fly.thatwhose指人或物,在定语从句中作定语。不可省略。We live in a house whose windows face south.This is the little girl w
4、hose parents were killed in the great earthquake.whose2.关系代词的用法注意点(1)that和which都可以指物，但以下5种情况只能用that 不能用which。当先行词中有人又有物时。如：Do you know the things and personsthat they are talking about?2.关系代词用法注意点(1)只能用that不能用which的5种情况当先行词为不定代词all,one,few,little,no,some,any,everything,nothing,nobody,none等时。如：This i
5、s all that I want from the school.当先行词被only,just,very,right,last等修饰时。如：This is the very book that I am looking for these days.当先行词被最高级修饰时。如：The TV tower is the highest building thathas been built in this city.当先行词被序数词修饰时。如：The first lesson that I learned will never be forgotten.(2)that和who都可以指人，但下面两
6、种情况，多用who。(2)用who不用that的情况先行词为all,anyone,one,ones等时。如：All who heard the news were excited.先行词为those,he和people时。如：Those who want to go please sign your names here.He who does not reach the Great Wall is not a true man.(3)whose引导的定语从句注意点whose引导定语从句，其后应紧跟名词，构成名词短语。whose与它所修饰的名词一起可以作介词的宾语。如：The boss in
7、whose department he worked had heard the news.他工作所在部门的老板已经听说了这个消息。(3)whose引导的定语从句注意点whose的先行词指物时，可用of which代替，但语序不同，即whose+名词=the+名词+of which，或=of which+the+名词。如：The novel whose title(=the title of which或of which the title)is Red and Black is very interesting.whose引导的定语从句，其先行词既可以指人也可以指物。whose的先行词指人时
8、，可用of whom代替，但语序不同，即whose+名词=the+名词+of whom，或=of whom+the+名词。如：The boy whose mother(=the mother of whom或of whom the mother)is a doctor is my friend.(4)关系代词在从句中作主语时，从句的谓语动词的人称和数必须与先行词保持一致。如：Tom is one of the students who were praised by the teacher yesterday.Tom is the only one of the students who wa
9、spraised by the teacher yesterday.(4)从句中的谓语动词与先行词保持一致The scientist who we met yesterday is very famous whom in the world.that (2)The dress is new.She is wearing it.The dress which she is wearing is new.that (1)The scientist is very famous in the world.We met her yesterday.巩固练习：1.用定语从句合并句子巩固练习1：用定语从句
10、合并句子(3)He is the kind person.I have ever worked with him.(4)This is the best film.I have ever seen this film.He is the kind person who I have ever worked with.whom that This is the best film that I have ever seen.1.The girl _is standing next to our teachernext to our teacher is her daughter.is her d
11、aughter.2.The girl _our teacher is talking with 2.The girl _our teacher is talking with is a famous singer.is a famous singer.3.The girl_ mother is a teacher can speak 3.The girl_ mother is a teacher can speak English English very well.very well.4.I cant find the book _is borrowed from 4.I cant find
12、 the book _is borrowed from the library.the library.5.I cant find the book _you lent to me.5.I cant find the book _you lent to me.who/that(who/whom/that)(who/whom/that)whosewhosewhich/thatwhich/that(that/which)(that/which)巩固练习：2.用适当的关系词填空巩固练习2：用适当的关系词填空四.介词+which/whom引导的定语从句1.介词的选用原则：(1)根据定语从句谓语动词的习
13、惯搭配来决定。This is the book on which I spent 8 dollars.This is the book for which I paid 8 dollars.四.“介词+which/whom”引导的从句，1.介词选用原则(2)根据先行词的习惯搭配来决定。I remember the day on which I joined the Party.I remember the days during which I lived there.2.当介词放在关系代词前面时，关系代词只能用whom(指人)或which(指物)，且关系代词不能省略。The man with
14、 whom you talked just now is my neighbor.I cant find the pen with which I was writing.2.介词位于关系代词前，关系代词的使用3.当介词位于定语从句末尾时，可用which/that(指物),who/whom/that(指人)作从句中介词的宾语.而且作介词宾语的关系代词可以省略。(whom/who/that)(which/that)Dad is a person_ I can easily talk to.Is this the play _ you were talking about just now?3.介
15、词位于句末，关系代词的使用4.在一些固定搭配的动词短语中，由于动词和介词不可分割，因此不能把介词置于关系代词之前。如：This is the watch(that/which)I am looking for.The babies(who/whom/that)the nurse is looking after are very healthy.4.含介词的固定搭配动词短语的使用5.先行词是the way，意为“方式，方法”时，引导定语从句的关系词用that/in which或省略。I didnt like the way _ she talked to me.The way _he teac
16、hes English is interesting.（that/in which）（that/in which）5.先行词为the way，关系词的使用五.关系副词when,where和why的用法五.关系副词的基本用法关系副词指代的先行词充当从句的成分when表时间的名词/名词词组时间状语where表地点的名词/名词词组地点状语why表原因的名词原因状语用关系副词when时，先行词指时间，when在定语从句中作时间状语，when可换成“介词+关系代词”。如：I still remember the day when(=on which)I first came to Nanjing.My
17、father was born in the year when(=in which)World War broke out.1.when1.when用关系副词where时，先行词指地点，where在定语从句中作地点状语，where可换成“介词+关系代词”。如：This is the farm where(=on which)we worked when we were young.The school where(=in which)his mother teaches is in the west of the city.2.where2.where用关系副词why时，先行词指原因，why
18、在定语从句中作原因状语，why可换成“介词+关系代词”。如：There are several reasons why(=for which)the boys should be punished.Tom couldnt give the teacher the reasonwhy(=for which)he was late for school.3.why3.why4.关系副词的用法注意点(1)当先行词为time，表示“次数”时，应用关系词that 或省略。如：This is the first time(that)the president has visited the country
19、.(2)当point,situation,case等词作先行词表示“情况，境地，场合”等意思时，其后常由where引导定语从句，where在句中作状语。如：Can you think of a situation where this phrase can be used?4.关系副词的用法注意点巩固练习：用适当的关系词填空 1)October 1,1949 was the day_ (_ _)China was founded.2)Beijing is the place _ (_ _)I came.3)Is this the reason _(_ _)he didnt want to se
20、e me?whenon whichwherefrom whichwhyfor which巩固练习：用适当的关系词填空4)Is this the room _(_ _)we were living last winter?5)The days are gone _ (_ _)we used“foreign oil”.6)Yesterday,we had a meeting _ (_ _)we discussed many problems.wherein whichwhenduring whichat whichwhere对比练习：用适当的关系词填空1.The room _ he once li
21、ved is still there.The room _ I have to clean every day belongs to my mother.where/in which(that/which)对比练习：用适当的关系词填空2.I will never forget the day_I met you.I will never forget the day _ we spent together.when/on which(that/which)The reason _ I dontknow is known to him.(that/which)why/for which3.The
22、 reason _ I dont know the thing is that I was not there at that time.六.非限制性定语从句1.非限制性定语从句的定义非限制性定语从句是对被修饰部分进行附加说明，如果去掉，主句的意思仍然完整或清楚。它和主句之间的关系比较松散，因此常用逗号隔开。My watch,which is very old,stopped again.六.1.非限制性定语从句的定义2.限制性定语从句与非限制性定语从句的区别(1)限制性定语从句和主句的关系十分密切，若省去，主句的意思就不明确。主从句之间不用逗号隔开。而非限制性定语从句则不然。试比较：This
23、 is the best book that I have read.This is a good book,which is easy to understand.2.限制性定语从句与非限制性定语从句的区别(2)限制性定语从句的先行词总是一个名词或一个代词，而非限制性定语从句的先行词可以是一个词，也可以是部分或整个主句的意思。此时，一般用关系代词as或which引导。(4)在非限制性定语从句中，不能省略关系代词，而在限制性定语从句中则可以。(3)限制性定语从句可以用关系代词that引导，而非限制性定语从句则不能。(5)关系代词在非限制性定语从句中作介词的宾语时，介词前可以有被介词短语所修饰的
24、词。如：(6)在非限制性定语从句中，关系代词还可以作介词的宾语。He has two daughters,the elder of whom is married.He is ill,in spite of which he keeps on studying.3.关系代词as,which引导非限制定语从句时的区别(1)as和which都可指主句的整个意思，而不是主句中的某一个词。as引导的非限制性定语从句，既可在主句前，又可在主句后，有时还可插入主句中；而which引导的非限制性定语从句一般置于主句之后。如：3.as/which引导非限制性定语从句的区别The weather turned
25、out to be very good,which was more than we could expect.As is known to all,the moon travels round the earth.(2)as多用于下列习惯用语中as anybody can see 正如人人都能看到的那样as is well known=as is known to all 众所周知as we had expected 正如我们所预料的那样as often happens 正如经常发生的那样as has been said before 如上所述as is mentioned above 正如
26、上面提到的4.“介词+关系代词”结构引导非限制性定语从句，一般有以下几种结构：(1)名词+介词+关系代词：They live in a house,the door of whichfaces south.4.“介词+关系代词”引导非限制性定语从句的几种结构(2)代词+介词+关系代词：There are four students in the classroom,all of whom are working hard.(3)数词+介词+关系代词：Last Sunday I bought a book from the bookstore,three of which were English novels.(4)形容词比较级/最高级+介词+关系代词：China has thousands of islands,the largest of which is Taiwan.Thank you
