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1、定语从句TheAttributiveClause先行词Thisisthebestfilm(thatIhaveseen).先行词先行词：被定语从句所修饰的词关系词/引导词关系词关系词：引导定语从句的词限制性定语从句和非限制性定语从句：Mysister,whoistwenty,worksinabank.Themanwhocamehereyesterdaycomesagain.限制性定语从句是先行词在意义上不可缺少的定语，如果去掉，主句的意思就不完整或失去意义。这种从句和主句关系十分密切，写时不用逗号分开。非限制性定语从句和主句关系不很密切，只是对先行词作些附加说明，如果去掉，
2、主句的意思仍然清楚。写时往往逗号分开。非限制性定语从句形式上：有逗号分开意思上：去掉后无影响限制性定语从句形式上：无逗号意思上：不能省引导定语从句的词：关系代词：关系副词：prep.+who,whom,whose,that,which,as在从句中充当主语，宾语，表语，定语when,where,why在从句中充当状语whomwhich关系代词whowhomwhosethatwhich指代充当成分人人人/物人/物物主/宾宾定主/宾/表主/宾1.I'veincludedsomephotos__________willhelpyoupicturetheplaces_______
3、___Italkabout.2.Tombe'smother,________hadbeenpullingweedsinhergarden,startedcrying.3.Heistheman_____________wearelookingfor.4.Arobotshow,_______themeis"RobotsandFuture",willbeheld.5.Thegirl,_______fatherisanengineer,ismyfriend.6.Shantouisnolongerthecity______itusedtobe.which/thatwhich/tha
4、t/-whowho/whom/that/-whosewhosethatI'vefoundthejobfor______I'vebeeneagersincechildhood.I'vefoundthejob_________I'vebeeneagerforsincechildhood.Heisthemanfor______wearelooking.介词后只能用whom,which不用that的情况：非限定性定语从句介词后whichwhich/that/-whom1.Doyouhaveanything__youwanttosayforyourself?2.Thisisthev
5、erybook__I’mlookingfor.3.Thisisthebest__hasbeenusedagainstpollution.4.WhatisthefirstAmericanfilm__youhaveseen?5.Iknowthethingsandpersons__hereferredto.6.Whichisthebike__youlost?7.Theysecretlybuiltupasmallfactory(whichproducedthings)(__couldcausepollution)8.Shantouisnolongerthecity(__ituse
6、dtobe).用that不用which的情况1.当先行词是不定代词allmuch.little.something.everything.anything.nothing.none.theone时或被不定代词only.any.few.little.no.all.very等词修饰时2.当先行词前面有thevery,theonly,thesame时3.当先行词前面是形容词最高级修饰时4.当先行词是序数词或它前面有序数词修饰时5.当先行词既有人又有物时6.当主句以疑问词who或which时7.有两个定语从句，其中一个关系代词已用which，另外一个宜用that，反之，同样如此。
7、8.关系代词在定语从句中作表语用who不用that的情况1.先行词是人称代词或anyone,thoseHe(____doesnotreachtheGreatWall)isnotatrueman.A.whichB.whoC.thatD.whom2.在therebe句型中，先行词指人时Thereisayounglady____asksforyou.BwhoThisissuchabigstone___noonecanmove.suchabigstone____noonecanmoveit.thatasthatassuch...tha
