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1、初中定语从句讲解及练习一、定义:在复合句中,修饰某一名词或代词的从句叫做定语从句。引导定语从句的词有关系代词that,which,who(宾格whom,所有格whose)和关系副词where,when、why*关系词常有三个作用:1、引导定语从句2、代替先行词3、在定语从句中担当一个成分二、关系代词引导的定语从句*1.who指人,在从句中做主语(1)TheboyswhoareplayingfootballarefromClassOne.*2.whom指人,在定语从句中充当宾语,常可省略。(1)Mr.Liuistheperson(whom)y
2、outalkedabout.注意:关系代词whom在口语和非正式语体中常用who代替,可省略。(2)Theman(who/whom)youmetjustnowismyfriend.*3.which指物,在定语从句中做主语或者宾语,做宾语时可省略(1)Footballisagamewhichislikedbymostboys.(which在句子中做主语)(2)Thisisthepen(which)heboughtyesterday.(which在句子中做宾语)*4.that指人时,相当于who或者whom;指物时,相当于which,在定语从句
3、中做主语或者宾语,做宾语时可省略。(1)Thepeoplethat/whocometovisitthecityareallhere.(在句子中做主语)(2)Whereistheman(that/whom)Isawthismorning?(在句子中做宾语)*5.whose通常指人,也可指物,在定语从句中做定语(1)Hehasafriendwhosefatherisadoctor.(2)Ilivedinahousewhoseroofhasfallenin.whose指物时,常用以下结构来代替(3)Theclassroomwhosedoorisb
4、rokenwillsoonberepaired.=Theclassroomthedoorofwhichisbrokenwillsoonberepaired.*具体使用时还要注意下列问题:1、只能使用that,不用which的情况:*1)当先行词是:all,any,anything,everything,nothing或被它们修饰时。IsthereanythingthatIcandoforyou?有什么可以为你做的吗?Allthatcanbedonemustbedone.凡是能做的都必须做。*2)当先行词被形容词的最高级或序数词修饰时。例如:
5、Thatisoneofthemostinterestingbooksthataresoldinthebookshop.Thefirstthingthatweshoulddoistogetsomefood.*3)当先行词有:theonly,thevery,thesame,thelast等修饰时。例如:Mynecklaceisnottheonlythingthat'smissing.*4)当主句以who或which开头时,定语从句中引导词用that,不用which或who,以避免重复。例如:Whoisthegirlthatiswearingar
6、edcoat?*5)当先行词既有人又有物时,用that。Thewriterandhisnovelthatyouhavejusttalkedaboutarereallywellknown.2、只用which不用that的情况:*1)关系代词前有介词时;e.g.ThisistheroominwhichLuXunlived.*2)非限定性定语从句中;作宾语用的关系代词也不能省略。Thatnecklace,whichyougavemeasapresent,waslostyesterday./Hehasadaughter,whoworksinahos
7、pital.*3)先行词本身是that时;e.g.Theclockisthatwhichtellsthetime非限定性定语从句的作用是对所修饰的成分作进一步说明,通常是引导词和先行词之间用逗号隔开,将从句拿掉后其他部分仍可成立。CharlesSmith,whowasmyformerteacher,retiredlastyear./Thereissomebodyherewhowantstospeaktoyou*4)which还有一种特殊用法,它可以引导从句修饰前面的整个主句,代替主句所表示的整体概念或部分概念。在这种从句中,which可以作
8、主语,也可以作宾语或表语,多数情况下意思是与andthis相似,并可以指人。Hedidverywellinthecompetition,whichmadehisparentsve