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定语从句知识点：定语从句的两个重要概念：先行词和关系词1.先行词：被定语从句所修饰的对象称为先行词。2.关系词：重复指代先行词、起连接主句和从句的作用（who,that,which）3.先行词指“人”，用关系代词who或whom，who的前面不能与介词搭配使用，whom在定语从句中不能作主语，但可作宾语或表语。4.表示人或物的所有关系，用whose.5.先行词指“物”，用关系代词which6.that可以指“人”，也可以指“物”：1）当先行词既有“人”，又有“物”时，用that2）先行词为指“物”的all,little,few,much,none,thefirst时,用that3）先行词是不定代词something,anything,nothing,everything时,一般用that4）先行词被any,only,all,every,no,some,much,few,little,序数词，形容词的最高级theonly,theone,thevery,theright,thelast等成分修饰时，用that。一．找出下列句子中的错误，用/画出来，把正确的词写在后面的横线上1.HeisthemanwhichIsawyesterday._________2.Sheisthegirlthatlikessinging._________3.ThisisapicturewhenItooklastyear.________4.Thisisthefactorywherewevisitedlastweek.____5.ThisisthewatchwhichTomislookingforit.____6.Doyouknowthemanwhichspokeatthemeetingjustnow?_____7.I’llneverforgetthedayswhenIspentinthecountryside._______8.Isthisthemuseumwhereyouvisitedafewdaysago?_____9.Ishethemanwhichwantstoseeyou?_______10.ThefirstEnglishbookwhichIreadwas“SnowWhite”.______11.Hetalkedabouttheteachersandschoolwhichhevisited.12.Alicereceivedaninvitationfromherboss,itcameasasurprise._____13.Themanwhichtalktoyoujustnowisanengineer.______14.Thisistheonlyplacewhichtheycanstayat.____15.Heisreadytohelpothersthatintrouble.______二．把下列词语组成一个通顺的句子1．the,who,helped,teacher,he,me,is_____________________________________________2.yesterday,brother,boy,helped,my,is,the,who,you.3.that’s,thetopic,I’m,just,interested,that,very,in.__________________________________________________________4.missed,important,that,meeting,the,you,was,very,have.__________________________________________________________5.glass,that,yesterday,expensive,broke,the,I,was,very._________________________________________________________三．画出下列句子的先行词成分1.Theoldmanwhowevisitedyesterdayisafamousartist.2.Themanwhomyfathershookhandswithjustnowisourheadmaster.3.IlikethebookswhichwerewrittenbyLuXun.4.Thedeskswhichwemadelastyearwereverygood.5.Hesaidnothingthatmadeherangry.6.Isthisthebookwhichsheislookingfor?7.Thechildwhosheislookingafterismysister.8.Allthestudentswhostudyhardhavepassed.9.Tomdidn’tpasstheEnglishexam,whichmadehisparentsangry.10.Thenewsthatweheardisnottrue.11.Isthisthebookthatyouboughtyesterday?四．请将下列每一组中的两个简单句合并为一个定语从句，用第二个句子作定语1.Thegirlishappy.Shewontherace.2.ThestudentisfromAmerica.Hesitsnexttome.3.Theboywasnotbadlyhurt.Theboyfellfromatree.4.Thetaxidriverwasfriendly.Hetookmetotheairport.5.Johnnyisn’thomeyet.Thatworriedme.6.Shetoldmeheraddress.Iwroteitdownonapieceofpaper.7.Thewomanlivesnextdoor.Sheisafamousdancer.一．答案：1.which-that2.that-who3.when-which4.where-which5.it去掉6.who7.when-which8.where-which9.which-who10.which-that(先行词为序数词，数词，形容词或最高级时用that)11.which-that(先行词既有人又有物时用that)12.it-which13.which-who/that14.which-that15.that后面加are二．答案：1．Heistheteacherwhohelpedme.2．Theboywhohelpedyouyesterdayismybrother.3．That’sjustthetopicthatI’mveryinterestedin.4．Themeetingthatyouhavemissedyesterdaywasveryimportant.5．TheglassthatIbrokeyesterdaywasveryexpensive.三．答案：1.Theoldman2.Theman3.thebooks4.Thedesks5.nothing6.thebook7.Thechild8.Allthestudents9.Tomdidn’tpasstheEnglishexam10.Thenews11.thebook四．答案：1.Thegirlwhowontheraceishappy.2.ThestudentswhositsnexttomeisfromAmerica.3.Theboywhofellfromatreewasnotbadlyhurt.4.Thetaxidriverwhotookmetotheairportwasfriendly.5.Jonnyisn’thomeyet,whichworriedme.6.Shetoldmeheraddress,whichIwrotedownonapieceofpaper.7.Thewomanwhoisafamousdancerlivesnextdoor.