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1、定语从句定语从句关系代词引导的定语从句功能用于限制性从句和只用于作用非限制性从句限制性从句代替人代替物代替人或物主语whowhichthat宾语whomwhichthat定语whosewhose(=ofwhom)(=ofwhich)1.作主语：关系代词在定语从句中作主语时，从句的谓语动词的人称和数须和先行词一致。Theboyswhoareplayingfootballontheplaygroundaremyclassmates.Themanthat(who)istalkingtomeisafriendofhers.Heisthemanwho(that)meanswhathesays.2.作
2、宾语：Themanwhomyouwanttoseehascome.Theletterwhich/thatIreceivedyesterdaywasfromafriendofmine.3.作定语：关系代词whose在定语从句中作定语用。Thegirlwhosefatherisourmathteacherisagoodsinger.Hementionedabookwhoseauthor(=theauthorofwhich)Ican’tremembernow.4.使用要点:1)关系代词的省略(1)直接宾语时可以省略。例如:Theman(whom)yousawjustnowisourmanager
3、.Whowasthewoman(that)youweretalkingwith?Isthereanything(that)Icandoforyou?(2)在“there+be”结构的从句中作主语的关系代词可以省略。Thisistheonlybus(that)thereistothatparkNote:关系代词放在介词后作宾语时，不能省略。但介词位于词尾时，关系代词可以省略。例如:Thisisthegirlwithwhomheworked.(whom不可省)Thisisthegirl(whom)heworkedwith.ThisistheroominwhichChurchillwasborn
4、.(which不可省)Thisistheroom(which)Churchillwasbornin.2)如果关系代词紧跟在介词后面，不能用who或that,只能用which或whomThisisthequestionaboutwhich(不用that)theyhavehadsomuchdiscussioninthepastfewweeks.Thepeoplewithwhom（不用that）heworkedthoughthewasabitstrange.3)如果先行词是all,much,anything,something,nothing,everything,little,none等不定代
5、词，关系代词一般只用that,不用whichPleasejusttellmeanything(that)youknowabouttheauthorofthebook.That’sall(that)Icoulddoatthattime.4)如果先行词被形容词最高级以及first,last,any,only,few,much,no,some,very等词修饰，关系代词常用that不用which,who或whomHeistheonlypersonthatwaspresentatthetime.ThisisthebestTVsetthatismadeinChina.Nosamplethatweha
6、vereceivedissatisfactory.Pleasesendusanyinformationthatyouhaveaboutthesubject.5)在非限制性定语从句中，不能用that，作宾语的代词也不能省略TheHeavenlyLake,which(不能用that)isoneoftheworldfamousscenicspots,isonTianshanMountain.Therearethirtystudentsintheclass,themajorityofwhom(不能用that)arefromthecity.6.Which可以引导修饰整个主句的定语从句Which还有一
7、种特殊的用法，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可以做主语，也可以做宾语或表语，多数情况下意思同andthis相似，并可以指人。例如：NewConceptEnglishisintendedforforeignstudents,whichisknowntoallofus.(which作主语）Shewasawardedagoldmedal,whichthewhole
