1.Themanisaworker.2.Themanisspeakingatthemeeting.合并句子:Themanwhoisspeakingatthemeetingisaworker.概念:在复合句中修饰名词或代词的句子.(Attributiveclause)Maryisabeautifulgirl.Maryisagirlwhohaslonghair.形容词作定语句子作定语,修饰girl,叫做定语从句Maryisagirl.Maryhaslonghair.合并为一个句子Maryisagirlwhohaslonghair.先行词关系词定语从句Maryisagirlwhohaslonghair.关系代词关系副词which,who,whom,whose,thatWhere,when,why定语从句的用法:当先行词是物时,用which或that引导.Thesearethetreeswhichwereplantedlastyear.当先行词是人时,用who,whom,that引导.who,whom,whose,that用法区别.who作定语从句的主语或宾语.Themanwhoisspeakingatthemeetingisaworker.Themanisaworker.Themanisspeakingatthemeeting.分解作主语Whom作定语从句的宾语Thewomanwhomtheywantedtovisitisateacher.Thewomanisateacher.Theywantedtovisitthewoman.分解作宾语whose作定语从句的定语.Iknowthegirlwhosemotherisateacher.分解Iknowthegirl.Thegirl’smotherisateacher.作定语that可以作定语从句的主语和宾语.注意:关系代词作动词宾语时可省略.Thewoman(whom/that)theywantedtovisitisateacher.有时只能用that,不用which,常见的情况有六种：1.当先行词是all,any,few,little,none,anything,everything,nothing或被它们修饰时。That’sallthatIknow.IsthereanythingthatIcandoforyou?Heansweredfewquestionsthattheteacherasked.2.当先行词被形容词最高级或序数词修饰时.ThatisthemostinterestingbookthatIhaveeverread.3.当先行词有thevery,theonly,thesame，thelast等修饰时。That’stheonlythingthatIcandonow.4.当主句以who或which开头时，定语从句的关系词用that,而不用which或who.Whoisthegirlthatspoketoyoujustnow?Whichisthepenthatyoulost?5.先行词同时包括人或物时，关系词用that.ThemanandhisdogthatIalwaysmeetarestandingbythegate.6.当关系代词在从句中作表语时。Chinaisnotthecountrythatitwas.先行词指人时，只用who不用that的情况：当先行词是anyone,one,ones,those等词时，关系代词知能用who。如：Anyonewhoworksonmathproblemsmustbecareful.任何研究数学问题的人一定很细心。Thosewhoagreeputuptheirhands.同意的人举起了手。只用which,whom不用that的情况：关系代词前有介词时。Thisisthecagethat/whichPollylivesin.=ThisisthecageinwhichPollylives.在介词后面，指物用which，指人用whom。1.Thisistheringon________shespent1000dollars.2.XiaoWang,with________Iwenttotheconcert,enjoyitverymuch.whichwhomwhose作定语,表示所属关系。whose=ofwhomTheboywhosefather(ofwhomthefather)isadetectiveismyclassmate.when作时间状语:When=介词+whichShewillneverforgetthedaywhen(=onwhich)shewasmarried.where作地点状语where=介词+whichIwanttoknowtheplacewhere(=inwhich)Iwasborn.why作原因状语,其先行词常常是thereason.why=forwhichThatisthereasonwhy(=forwhich)I’mlate.Exercises:1.Theradioset_____hasgonewrong.A.IboughtitlastweekB.IboughtlastweekC.whichIboughtitlastweekD.whatIboughtlastweek2.I’lltellyou_____hetoldmelastweek.A.allwhichB.allwhatC.thatallD.allBD3.Thisisthebiggestlab_____wehaveeverbuiltinourschool.A.whichB.whatC.whereD./4.IsOxygen(氧气）theonlygas_____helpsfireburn?A.thatB./C.whichD.it5.Achild_____parentsaredeadiscalledanorphan(孤儿).A.whoB.whoseC.who’sD.whichDAB6.Thehouse____wesawatthefootofthehillwasbuiltacenturyago.A.whichB.whereC.whatD.inwhich7.Isthatthereason_____youarefortheplan.A.whichB.whatC.whyD.forthat8.Isthisthemuseum_____someGermanfriendsvisitedlastweek.A.thatB.whereC.theoneD.inwhich9.October1,1949istheday_____thePRCwasfounded.A.whichB.whenC.thatD.onthatACAB1.Ihaveafriend________likeslisteningtoclassicalmusic.who/thatwhich/thatwhose3.Theman______legbrokeinamatchusedtobeafootballplayer.2.YesterdayEmilywaswearingthenewdress__________Igaveher.4.Myparentsliveinahouse__________ismorethan100yearsold.5.Theboywith_______Johnspokeismybrother.which/thatwhom6.Kevinisreadingabook__________istoodifficultforhim.which/that7.Isthereanything________youwanttobuyinthetown.8.All______wecandoistostudyhard.9.Thefirstone_____standsupisalittleboy.thatthatthat1.这就是救了那个孩子命的医生.Thisisthedoctorwhosavedtheboy’slife.2.正在跑步的那个人是我的叔叔.Themanwhoisrunningismyuncle.3.我喜欢可以随之而唱的音乐.IlikethemusicthatIcansingalongwith.4.住在隔壁的那个女的是一名教师.Thewomanwholivesnextdoorisateacher.
