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1、有关系代词或关系副词引导用来修饰主句中的某一个名词或代词并起定语作用的从句，叫定语从句。定语从句所修饰的词叫先行词，从句跟在先行词后面。定语从句的构成方法是：关系代词或副词+陈述句语序，关系代词有：who,whom,whose,which,that,as等；关系副词有when,where,why等。关系代词有双重功能，一方面代表前面所修饰的先行词，把从句与先行词连接起来；另一方面引导出从句并在从句中充当某种句子成分。Thenumberofpeoplewho/thatlosthomesreachedasmanyas250,000.Itsoundedlikeatrainwhich
2、/thatwasgoingundermyhouse.定语从句这是我梦想中的家。我们什么时间能搬来？2.最重要的是，你现在应该对我实话实说。3.他喜欢开别人的玩笑，但是不喜欢别人开他的玩笑。4.警察驱散了人群。5.有那么多的工作要处理，经理很焦急。dreamofaboveall,behonestwithplayajokeonbreakupwith…toThisisthehomeIdreamof.Whencanwemovein?Aboveall,youshouldbehonestwithmerightnow.Helikesplayingjokesonothers,butdisli
3、kesbeingplayedjokeson.Thepolicebrokeupthecrowd.Withsomuchworktodealwith,themanagerfeltworried.Translation关系代词之物时只用which不用that的情况（1）关系代词在从句中作介词宾语并且介词提前至关系代词前时只用which，但当介词在从句句尾时，两者皆可。Thisisthequestionaboutwhichwe’vehadsomuchdiscussion.=Thisisthequestionwhich/thatwe’vehadsomuchdiscussionabout.
4、(2)在非限定性定语从句中必须用which不能用that。Thisisthebookwhich/thatI’mlookingfor.Theyhaveinvitedmetovisittheircountry,whichisverykindofthem.当关系代词作lookafter,lookfor等不能拆开使用的及物动词性短语的宾语时，介词不可以提前。（1）关系副词where之地点，在从句中作地点状语。Thisisthehousewherehelived.(2)关系副词when指时间，在从句中作时间状语。I’llneverforgetthedayswhenweplayedtog
5、ether.(3)关系副词why指原因，在从句中作原因状语。Heexplainedthereasonwhyhewaslate.关系副词有时可用介词+which来代替。如上句中where=inwhich;when=onwhich;why=forwhich。关系副词的用法Rewritethesentenceusingtheattributiveclause:1.Iremembertheday.“TheBeatles”playedtheirfirsthitonthatday.2.Theguitarwaslostwhilehewastouring.Georgegavemanyperf
6、ormanceswithit.3.Themusicianswereverypopular.Theyworkedwiththemusicians.Irememberthedaywhen“TheBeatles”playedtheirfirsthit.TheguitarwithwhichGeorgegavemanyperformanceswaslostwhilehewastouring.Themusicianswithwhomtheyworkedwereverypopular.GeorgeOrwell______wasEricArthur,wrotemanypoliticalnov
7、elsandessays.A.therealnameB.whathisrealnameC.hisrealnameD.whoserealname高考链接D解析：答案D。whose引导定语从句时，只能在从句中作定语，其他各项均构不成定语从句。2.Anyway,thatevening,________I’lltellyoumoreaboutlater,IendedupstayingatRachel’splace.A.whenB.whereC.whatD.which高考链接D3.Whatsurprisedmew
