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定语：用于修饰名词或代词Heisaphysicsteacher.Pleaseshowmeanotherticket.AustraliaisanEnglish-speakingcountry.三.定语从句：由一个句子充当定语从句的位置：在名词或代词后先行词：被定语从句修饰的词引导词：引导定语从句的词关系代词关系副词引导词的作用：(1)引导作用(2)成份作用(3)代替作用Thestudentwhoyouwanttoseehascome.引导词关系代词关系副词在定语从句中作的成分主语或宾语表语主语或宾语表语宾语宾语或主语表语定语时间地点原因状语状语状语在从句中作宾语可省去先行词为whothatwhomwhichwhoseas人物/人人物人/物人/物WhenWherewhy主语/宾语表语用定语从句造下面句子1.我昨天借给你的书很有趣。Thebook(which/that)Ilenttoyouyersterdayisintersting.2.他是一个可以依赖的人。Heisaman(who/that/whom)youcanrelyon/dependon/counton.3.我昨天买了一本书，该书的作者是一位盲人。Iboughtabookyesterdaywhoseauthorisablind.4.他是一个梦想成为律师的孩子。Heisachildwho/thatdreamsofbecomingalawyer.5。你听到的那个消息是真的。Thenews(that/which）youheardistrue.•6.我永远不会忘记我们初次相见的那天。Iwillneverforgetthedaywhenwefirstmeteachother.•7.告诉我你迟到的原因。Tellmethereasonwhyyouwerelatethismorning.•8他们工作的那所学校离这不远。Theschoolwheretheyworkisnottoofarfromhere.9.正如我们所期待的那样，我们赢得了比赛。Aswehadexpected,wewonthegame.一which,that(先行词为物）的区别1.只用that不用which的情况：（5）先行词既是人又是物。（3）先行词为形容词的最高级或序数词。（4）先行词被thevery,theonly,thelast等修饰时。2.Allthatcanbedonehasbeendone.5.Hespokeofthethingsandpersonsthathehadseenabroad.4.ThisistheverybookthatIamlookingfor.(2)先行词被all，no，every,some,any,little,much等词修饰时。（6）当主句的主语的疑问词是who或which时3.ThisisoneofthebestfilmsthatIhaveeverseen.(1)先行词为all，everything,nothing,something,anything,little,much等不定代词时。1.Iamsureshehassomething(that)youcanborrow.6.Whoisthegirlthatisstandingunderthetree?2.只用which不用that的情况1.在非限制性定语从句之中，只用which，不用that2.介词后，关系词只用which不用that1.Thenovel,whichIreadlastnight,isveryintresting.2.Doyouknowthebookaboutwhichourteacheristalking?介词+which/whom引导的定语从句当先行词是人时，用介词+whom引导定语从句，eg1:Theymaystartasagroupofhigh-schoolstudents,forwhompractisingtheirmusicinsomeone’shouseisthefirststeptofame.当先行词是物时，用介词+which引导定语从句，eg2:Haveyoueverdreamedofplayinginfrontofthousandsofpeopleataconcert,atwhicheveryoneisclappingandappreciatingyourmusic.注意:介词+which（指物),不可省介词+whom（指人),不可省介词后不用who、that1.介词后先行词的选择1.Istillremembertheday_____whichIfirsttraveledbyplane.2.Keepthebooksinaplace______whichyoucanfindthemeasily.3.Ididn'tknowthereason____whichshedidn'tturntomeforhelp.oninfor2.介词的选择注1：介词根据先行词选择介词介词+which=关系副词用适当的介词填空：1.Ispent5yuan______thebook.2.Ipaid5yuan_____thebook.3.Ilearnt_______thebookalot.4.Tomoftentalks______thebook.1.IjoinedtheParty______thatday.2.Ilivedhere__________thosedays.3.Istayedthere______thatmonth.onforfromaboutonduring/inin用适当的介词填空：注2：根据定语从句谓语动词的习惯搭配来决定。①Thisisthebook_____whichIspent5yuan._____whichIpaid5yuan.______whichIlearntalot.______whichTomoftentalks.onforfromabout②Irememberthatday_____whichIjoinedtheparty.thosedays_________whichIlivedhere.thatmonth_____whichIstayedthere.onduring/inin1.Thisismycar,__________whichICannotgetthere.2.Thisisthepilot__________whommybrotherhasworkedfortenyears.3.Thisisthestudent_________whommysonwassaved.注3.根据句子的意义来确定介词。withoutwithby总结1：在定语从句中先行词是物关系词用which在定语从句中先行词是人关系词用who2：介词的选用A：注意介词根据先行词选择介词B：根据定语从句谓语动词的习惯搭配来决定。C：根据句子的意义来确定介词。一先二动三意义的原则1.Doyouknowwholivesinthebuilding______thereisawell?A.infrontofitB.infrontofwhoseC.infrontofwhichD.infrontwhich2.I’llneverforgettheday____IjoinedtheLeague.A.onwhichB.inwhichC.whichD.atwhich3.Thewoman_____mybrotherspokejustnowismyteacher.A.whoB.towhomC.towhoDwhomCAB4.Jeannewasheroldfriend,____sheborrowedanecklace.A.fromwhoB.fromwhomC.tothatD.towhom5.Hisglasses,_____hewaslikeablindman,felltothegroundandbrokeitsleg.A.whichB.withwhichC.withoutwhichD.that6.sheisateacherofmuchknowledge,_____muchcanbelearned.A.whoB.thatC.fromwhichD.fromwhomBCD7.Hebuiltatelescope___hecouldstudytheskies.A.inwhichB.withthatC.throughwhichD.byit8.Doyouknowthereason____hewaslate?A.thatB.whichC.forwhatD.forwhich9.Ihaveboughttwoballpens,____writeswell.A.noneofwhichB.neitherofwhichC.noneofthemD.neitherofthemCDB10.TheSecondWorldWar_____millionsofpeoplewerekilledin1945.A.duringwhichB.inthatC.whereD.onwhich11.Chinahasmanyrivers,____theChangjiangRiveristhelongest.A.whichB.inwhichC.amongwhichD.oneofwhichACDProverb1.Hewholaughslastlaughsbest.2.Allthatglittersisnotgold.3.Godhelpthosewhohelpthemselves.4.Alliswellthatendswell.5.HewhodoesnotreachtheGreatwallisnotatrueman.笑到最后笑的最好发光的不一定是金子天助自助者结局好一切都好不到长城非好汉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：lookfor/after/forwardto、carefor、takecareof、hearof/about/from,等.：Thisisthewatch(that/which)Iamlookingfor.Thebabies(who/whom/that)thenurseislookingafterareveryhealthy.介词+关系代词先行词为人,关系代词用whom;先行词为物,关系代词用which.关系代词在介词后不能用that,关系代词也不能省。如介词放在句尾，引导词可用that或who,而且可省去。1.Thisisthereason____________helefthishometown.(=why)2.I’llneverforgettheday___________westayedtogether.(=when)3.Thisisthegirl_____________Ilearnedthenews.4.Theperson___________IspokejustnowisthemanagerthatItoldyouabout.5.I’llshowyouastore__________youmaybuyallthatyouneed.(=where)6.Idon’tliketheway_________youlaughedather.(=that;\)