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1、定语从句一、定语从句及相关术语1.定语从句：修饰一个名词或代词的从句称为定语从句，一般紧跟在它所修饰的先行词后面。2.关系词：引导定语从句的关联词成为关系词关系词有关系代词和关系副词。关系代词有that,which,who,whom,whose,as等；关系副词有where,when,why等。关系词常有3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)YesterdayIhelpedanoldmanwholosth
2、isway.2.whom指人，在定语从句中充当宾语，常可省略。(1)Mr.Liuistheperson(whom)youtalkedaboutonthebus.(2)Mr.LingisjusttheboywhomIwanttosee.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。(3)Themanwho/whomyoumetjustnowismyfriend.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.(2)Thisisthepen(which)heboughtyesterd
3、ay.4. that指人时，相当于who或者whom； 指物时，相当于which。在宾语从句中做主语或者宾语，做宾语时可省略。(5)Thenumberofthepeoplethat/whocometovisitthecityeachyearrisesonemillion.(6)Whereisthemanthat/whomIsawthismorning?5. whose通常指人，也可指物，在定语从句中做定语.对主句先行词的所属性进行修饰的。(1) Hehasafriendwhosefatherisadoctor.(2)Ioncelivedinahousewhoseroofhasfallenin.
4、whose指物时，常用以下结构来代替(3) Theclassroomwhosedoorisbrokenwillsoonberepaired.(4)Theclassroomthedoorofwhichisbrokenwillsoonberepaired.(5)Doyoulikethebookwhosecoverisyellow?(6)Doyoulikethebookthecolorofwhichisyellow?*三.介词+关系代词引导的定语从句关系代词在定语从句中做介词宾语时，从句常由介词+关系代词引导(1) Theschool(that/which)heoncestudiedinisvery
5、famous.(2)Theschoolinwhichheoncestudiedisveryfamous.(3)TomorrowIwillbringhereamagazine(that/which)youaskedfor.(4)TomorrowIwillbringhereamagazineforwhichyouasked.(5)Wellgotohearthefamoussinger(whom/that/who)wehaveoftentalkedabout.(6)Wellgotohearthefamoussingeraboutwhomwehaveoftentalked.注意：1.含有介词的动词短语
6、一般不拆开使用，如：lookfor,lookafter,takecareof等(1)Thisisthewatchwhich/thatIamlookingfor.(T)(2)ThisisthewatchforwhichIamlooking.(F)2. 若介词放在关系代词前，关系代词指人时用whom，不可用who或者that；指物时用which，不能用that；关系代词是所有格时用whose(1)Themanwithwhomyoutalkedismyfriend.(T)(2)Themanwho/thatyoutalkedwithismyfriend.(F)(3)Theplaneinwhichwef
7、lewtoCanadaisverycomfortable.(T)(4)TheplaneinthatweflewintoCanadaisverycomfortable.(F)3.“介词+关系代词”前可有some,any,none,both,all,neither,most,each,few等代词或者数词(1)Helovedhisparentsdeeply,bothofwhomareverykindtohim.(2) Inthebaskettherearequitemanyapples,someofwhichhavegonebad.(3) Therearefortystudentsinourcla
8、ssinall,mostofwhomarefrombigcities.四关系副词引导的定语从句1.when指时间，在定语从句中做时间状语(1)IstillrememberthedaywhenIfirstcametotheschool.(2)Thetimewhenwegottogetherfinallycame.2.where指地点，在定语从句中做地点状语(1)ShanghaiisthecitywhereIwasborn.(2) ThehousewhereIlivedtenyearsagohasbeenpulleddown.3.why指原因，在定语从句中做原因状语(1)Pleasetellmet
9、hereasonwhyyoumissedtheplane.(2)Idontknowthereasonwhyhelooksunhappytoday.注意：关系副词引导的从句可以由“介词+关系代词”引导的从句替换(1)Thereasonwhy/forwhichherefusedtheinvitationisnotclear,(2)Fromtheyearwhen/inwhichhewasgoingtoschoolhebegantoknowwhathewantedwhenhegrewup.(3)Greatchangeshavetakenplaceinthecityinwhich/whereIwasbo
10、rn.五限制性定语从句和非限制性定语从句限制性定语从句举例：(1) TheteachertoldmethatTomwastheonlypersonthatIcoulddependon.(2) Chinaisacountrywhichhasalonghistory.非限制性定语从句举例：(1)Hismother,wholoveshimverymuch,isstrictwithhim.(2)China,whichwasfoundedin1949,isbecomingmoreandmorepowerful.要注意区分以下几个句子的不同(1) Hisbrotherwhoisnowadoctoralwa
11、ysencourageshimtogotocollege.他那当医生的哥哥常鼓励他要考上大学。（他还有其他的哥哥）(2)Hisbrother,whoisnowadoctor,alwaysencourageshimtogotocollege.他的哥哥是当医生的，常鼓励他要考上大学。（他只有一个哥哥）难点分析（一）限制性定语从句只能用that的几种情况1当先行词是anything,everything,nothing(something除外),few,all,none,little,some等代词时，或者是由every,any,all,some,no,little,few,much等修饰时(1)H
12、aveyoutakendowneverythingthatMr.Lihassaid?(2) Thereseemstobenothingthatseemsimpossibleforhimintheworld.(3)Allthatcanbedonehasbeendone.(4)ThereislittlethatIcandoforyou.注意：当先行词指人时，偶尔也可以用who(4) Anymanthat/.whohasasenseofdutywontdosuchathing.2.当先行词被序数词修饰(1)ThefirstplacethattheyvisitedinLondonwastheBigBe
13、n.3.当先行词被形容词最高级修饰时(1)ThisisthebestfilmthatIhaveseen.4.当形容词被thevery,theonly修饰时(1)ThisistheverydictionarythatIwanttobuy,(2)Afterthefireinhishouse,theoldcaristheonlythingthatheowned.当先行词指人时，偶尔也可以用who(3) WangHuaistheonlypersoninourschoolwhowillattendthemeeting 5. 当先行词前面有who,which等疑问代词时(1) Whoisthemanthatisstandingthere
