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1、定语从句专讲学习定语从句的关键是如何选择关联词。关联词在句中作状语就应使用关系副词.(where,when,why等。)否则使用关系代词(who,whom,whose,which,that等。)二、由who,whom,whose引导的定语从句：(who作主语，whom作宾语，whose用作定语，同时whose还可以指物，相当于ofwhich。)e.g.:Thisisthedoctorwhosavedthebaby'slife.Heisthestudentwhomtheteacherpraisedatthemeeting.一、在复句中修饰名词或代词的从句叫做定语从句。需要学习和掌
2、握的 定语从句有以下三种：由关系代词或关系副词引导的定语从句。由介词+which引导的定语从句。非限制性定语从句。1.Iknowthegirlwhosemotherdiedayearago.2.Haveyouseenthenotebookwhosecoverisblack?三、由which引导的定语从句：(which在从句中作主语或谓语动词的宾语。)E.g.1.Thisisthestorewhichopensallnight.2.Thisisthepenwhichmybrotherboughtforme.3.IsthistheHouseinwhichLuXunoncelived
3、? (orIsthisthehousewhichLuXunoncelivedin?)4.Thisisthemagazinewhichyouarelookingfor.Notes:which,whom在从句中作介词的宾语时，介词一般可置关系代词之前或放在从句原来的位置。但在含有介词的动词固定短语中介词只能放在原来的位置上，而不能放在which之前，如例4则不能改为Thisisthemagazineforwhichyouarelooking.3.Helivesinaroomwhosewindowopenstothesouth.四由that引导的定语从句,可以指人或物，代替who,w
4、hom,which. 1.在定语从句中that在从句中作主语、宾语，但不能放在介词后作介词宾语：、E.g.:1.Thisisthephoto(that/which)ItookinBeijinglastyear.2.Thisistheman(that/who)livesnextdoor.3.Isthistheprofessorthatyoutalkedaboutyesterday? (about不能放在that前面。)但下列情况只能用that。1.序数词或最高级形容词修饰先行词时用that。E.g.:1.ThisisoneofthebestnovelsthatIhaveeve
5、rread.2.ThefirstEnglishsongthatIlearnedwasABCsong.2.Allmuch,everything,nothing,something,anything作先行词时用that.(但先行词是everybody,everyone时应用who,one指人时也用who。）E.g.:1.Everythingthatwesawattheexhibitiongreatly interestedus.2.Isthereanythingthatbelongstoyou?3.Allthatweneedismoretime.4.Nothingthatthep
6、arentsdodoesn'tinfluence theirchildren.3.先行词为any、no、only、very等修饰时用that。E.g.:1.Thatistheonlywaythatwecanfindatpresent.2.Thisisthetwelfthletterthatshehasreceivedfromhim.3.Thisistheverymuseumthatwevisitedforthefirsttime.4.that可以用来引导限制性定语从句，当它在从句中作介宾时，介词应后移。E.g.:Thisisthegoodstudentthattheteach
7、erstalkedabout justnow.5.先行词既指人又指物的并列名词时，用that.E.g.:Mymotherandheroldfriendstalkedofthethingsandpersons thattheyrememberedintheschool.非限制性定语从句：限制性定语从句对先行词起限制作用，而非限制性定语从句是对概念 清楚的先行词加以追加阐述或补充说明1.非限制性定语从句一般用which/who引导而不用that或what引导， 作宾语的关系代词不能省略，
