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1.Afrogusesitstongue________________2.Asnakeusesitstongue_______________3.Adogusesitstongue_______________4.Acatusesitstongue_______________5.Youuseyourtongue_______________A.Torecognize(识别）differenttastesB.TofeelitswayC.TocatchfoodD.TocoolitselfE.TocleanitselfInterestingscienceCBDEA概念：1)在一个句子中，定语成分由一个句子来充当，那么这个句子被叫做定语从句。2)被定语从句所修饰的词叫做先行词，3)定语从句要紧跟在先行词之后。4)定语从句相当形容词的作用在句中作定语。译为：“……的”5)定语从句要由关系代词who,whom,that，which或关系副词when,where等引导。关系词先行词所指关系词在从句中作用关系代词that人/物主语、宾语which物主语、宾语who人主语、宾语whom人宾语whose人/物定语(whose+n.)Theuseoftherelativepronoun(关系代词)被修饰的名词、代词叫做_______，________常跟在先行词之后，由____________________引导。Theladywhoisstandingbehindthecounter.servedme.站在柜台后的那位女士接待我的。先行词定语从句关系代词或关系副词Howisitformed?Theladyservedme.Sheisstandingbehindthecounter.ThemanwhoIservedwaswearingahat.先行词关系词定语从句主句•Themanwaswearingahat.•Iservedtheman.Theman__________waswearingahat._____Iservedwho1.他是来自美国的那个男孩。Heistheboy2.她是每天读英语的那个女孩Sheisthegirl3.她是Tom每周都拜访的那个老人。SheistheoldwomanwhocomesfromAmerica.whoreadsEnglisheveryday.who/whomTomvisitseveryweek.关系代词who,whom的用法二者都用于指人。who在定语从句中做主语，宾语都可以。whom在定语从句中只能做宾语。正在玩儿电脑的那个人是我的老板。Thatman______________________ismyboss.正在跑步的那个人是刘翔。Thatman____________isLiuxiang.whoisplayingcomputergameswhoisrunningTheman__________________________________isapoliceman.Themanisapoliceman.Heisshakinghandswithmyfather.____isshakinghandswithmyfatherwhowhom指人，在句子中做宾语，不能做主语，常可省略。Theman_______youmetjustnowismyfather.Thewoman_______sheistalkingwithismysister.whomwhom5.whose指人或物，在从句中作定语。先行词与连接词后面的名词存在所属关系（…的)1.Hehasafriend_______fatherisadoctor.2.Doyoulikethebook_______colorisyellow?3.Theboy_______fatherisateacherisgoodatEnglish.whosewhosewhose关系代词which一般用来指物。which在从句中既可以做主语也可以做宾语。关系代词which的用法Thisisthebook________________________.这是你正在找的那本书。Thebike_____________________isLily’s.在花园里那辆自行车是Lily的。我昨天看的那个电视节目非常有趣。TheTVshow______________________isveryinteresting.whichyouarelookingforwhichisinthegardenwhichIwatchedyesterday穿着红色连衣裙的那个女人是我妈妈。这是我昨天买的那块手表。•1.Theboywhoisstandingunderthetreeismybrother.•2.Thewomanwhowearsareddressismymother.•3.ThisisthewatchwhichIboughtyesterday.正站在树下的那个男孩儿是我哥哥。1.that指人或物，在从句中做主语或宾语,作宾语时可以省略They’retalkingaboutthefilm.Ihaveseenthefilm.They’retalkingaboutthefilm_________________.________I’veseen(that)关系词that的用法：关系词that既可以用来指人，也可以用来指物。即当先行词无论是人或是物的时候都可以用that。1.Theman____camethismorninghadafunnyface.2.Idon’tlikethehouse______helivesin.3.Thisisthebridge_____hebuiltlastyear.4.Idon’tknowtheman___________sheistalkingto.5.Didyoubuythecar______helikesverymuch?6.Theboy________sheislookingafterisherbrother.7.Doyouknowthecinema_____isnearthebus-stop?8.Thenurse___________wearetalkingaboutspeaksEnglishwell.thatthatthatthatthatthatthatthatIshowedhimtheletter.Ireceiveditthismorning.Ishowedhimtheletter_______________________________e.g.12.which指物，在句中作主语或宾语，作宾语时可以省略。_________Ireceivedthismorning.(which)Theappleismine.Theappleismine.Theappleisyours.Theappleissmall.Theappleisbig.?whichisredwhichisgreenwhichisredwhichisgreenThisisthecomputerwhichIboughtthreedaysago.ThisisthetelevisionwhichIboughtamonthago.Heisthemanwhocameherelastweek.Sheisanursewholookedafterme.I’mtalkingabouttheactorthatwesawinafilmlastweek.IsawafilmwhichisontheRoxyCinema.Irangthedoctorwholivesonthecornerofourstreet.I’mgoingtobuythetelevisionthatyoucanbuyoninstalments.Iwanttospeaktotheboywhoservedmeyesterday.Sheisthegirl.Shemetmeyesterday.Sheisthegirlwhometmeyesterday.Thisisthebook.Iboughtityesterday.ThisisthebookwhichIboughtyesterday.Sheisthegirl.Imetheryesterday.Sheisthegirlwho/whomImetyesterday.Iamtheperson.Iwrotetoyou.Iamthepersonwho/whomwrotetoyou.练习：用适当的关系词填空1.Theman____camethismorninghadafunnyface.2.Idon’tlikethehouse______helivesin.3.Thisisthebridge_____hebuiltlastyear.4.Idon’tknowtheman___________sheistalkingto.5.Didyoubuythecar______helikesverymuch?6.Theboy__________sheislookingafterisherbrother.7.Doyouknowthecinema_____nearthebus-stop?8.Thenurse___________wearetalkingaboutspeaksEnglishwell.9.Thebook______youwanttobuyisnotverygood.10.Thedoctor__________shecalledyesterdayismyfather.whowhichwhichwho/whomwhichwho/whomwhichwho/whomwhich例1.Theman__________gaveyouthetalkyesterdayisourteacher.that/who指人:that/who(主语)例2:Theboy_________________thenurseislookingafterismyfriend.(who/whom/that)指人:who/whom/that(宾语,可省略)例4:Thequestion_______________Idon’tunderstandisaboutgrammar.(that/which)指物:that/which(宾语,可省略)例3:Thecar________________isredwasdamagedyesterday.that/which指物:that/which(主语)例5.Yesterdayshetalkedwithonewoman____husbanddiedinthataccident.A.whichB.whoseC.ofwhichD.thatB关系代词表示先行词的所属关系，指人和物时都用whose,可理解为“…的”PracticeTime!•Isthereanyoneinyourclass______familyisinthecountry?A.whoB.who'sC.whichD.whose•Don’ttalkaboutthethings_______youdon’tknow.A.whichB.whatC.whoD.those•Ihaveboughtthesamedress__________sheiswearing.A.asB.thatC.whatD.what•Thegirl________anEnglishsonginthenextroomisTom’ssister.A.whoissingingB.issingingC.sangD.wassinging•Sheisthegirl______haspassedtheexamination.A.whatB.whomC.whichD.whoDAAAD