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1、只可用that.下列情况只可用“that”而不可用“which”：1.序数词或最高级形容词或叙述此修饰先行词，如first,best2.先行词是all,little,much,few,anything,nothing,something,none,theone时3.先行词被any,few,little,all,no修饰时4.先行词被theonly,thevery,thesame,thelast修饰时5.先行词既有人又有物时。6.当句中已有who时，为避免重复。高中阶段知道这些就可以了。定语从句重难点复习性讲练关系代词 主语动宾介宾定语人whothat
2、whowhomthatwhom whose(某人的)=ofwhomthe物which that which whose(某物的)=ofwhichthewhose在定语从句中作定语，表示引导词与whose后的名词为所属关系。whose多指人，也可指物，可分别与ofwhich/whomthe互换使用。Thisisthebookwhosecoverisblue.Thisisthebookofwhichthecoverisblue.Thisisthebookthecoverofwhichisblue.关系副词表示从句动作发生在某时：when=at/on/
3、in+which表示从句动作发生在某地：where=at/on/in+which表示从句动作发生的原因：why=for+which 一、何时用关系副词when,where,why引导定语从句？when引导定语从句:先行词是表示时间的名词而且是从句动作发生的时间时，用when引导定语从句。I’llneverforgetthedaywhen(=onwhich)Imetyou.Thiswasthetimewhen (=atwhich)heleftforBeijing.Wewillputofftheoutinguntilnextweek,when(=inwh
4、ich)wewon’tbebusy.where引导定语从句:先行词是表示地点的名词或含有地点意义的抽象名词而且是从句动作发生的地点时，用where引导定语从句。Thisisthetownwhere(=inwhich)Ispentmychildhood.Thetableatwhichsheissittingisa newone.I’llshowyouthepointwhereyoufailed.why引导定语从句:先行词是reason并且从句是表示结果时，用why引导定语从句。Thisisthereasonwhy(=forwhich)Ididn’tc
5、omehere.Thereason________________shegavewasnottrue.特别注意：当定语从句缺主语或宾语才直接用which或that引导定语从句。Thelibrary_______________________studentsoftenstudywasonfirelastnight.Thelibrary,_______ wasbuiltinthe1930s,needsrepairing.Thelibrary_______________youvisitedyesterdaywasbuiltin1990.I’llneve
6、rforgettheday_____________________wefirstmetinthepark.I’llneverforgetthetime______________Ispentoncampus.I’llneverforgetthetime______________wasspentwithyou. 二、介词+关系代词应注意的情况:1.who、that不能用与介词之后Themanwho/whomyouspoketowasascientist. Themantowhomyouspokewasascientist.Thecitythat
7、/whichshelivesinisfaraway. Thecityinwhichshelivesisfaraway.2.在固定短语中介词不能提前Isthisthewatchthatyouarelookingfor? TheoldmanwhomIamlookingafterisbetter. 三、如何确定介词？把先行词接到从句谓语后面去,看需要什么介词。1、看定语从句中动词与介词的搭配Heistheman_____whomIthinkyoucandepend.Thehouse____whichhepaid100,000yuanisve
8、rybeautiful.2、看定语从句中形容词与介词的搭配Hereferredmetosomereferen
