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1、定义：用来连接词，短语，从句或句子的词叫连词。连词是一种虚词，在句中不能单独使用。and,but,or,so,forboth…andnotonly…butalso,eitherneithsri;…nor5.sothat,inorderthatwhen,while,as,after,not…until,assoonasI从属连词2.because,as,since,for6.though,although,evenif,eventhough3.if,uniess7.than,as…as<4.so…that,such…that,sothat1.andTheysatdownandtal
2、kaboutsomething.(X)Theysatdownandtalkedaboutsomething.(V)Makeupyourmind,andyou'llgetthechanee.=Ifyoumakeupyourmind,you'llgetthechanee.表关联；表选择表因果v并列连词表转折或对比＜2.3.4.1.2.1.2.both…an两者者ESheplays(both)thepianoandtheguitar.notonly…but(als不但…而且Notonlytheteacherbutalsothestudentswanttobuythebook.neith
3、er…no既不也不"Neitheryounorheisaworker.orShallwewalkortakeabus?Takethisbus,oryoucan'getthereintime.Either…orEitheryouorIamright.Youcaneitherstayathomeorgoshopping.but表示转折，while表示对比、转折。Somepeoplelovecats,whileothershatethem.---Wouldyouliketocometodinnertonight?---I'dliketo,butrmtoobusy.not…but…意思为
4、”不是而是"Notyoubutheisateacher.注意：although…yet…但although不与but连用。Althoughhewasweak,buthetriedhisbesttodothework..(X)Althoughhewasweak,yethetriedhisbesttodothework(V)1.2.f引导宾语从句forsoHeisabsenttoday,forheisill.Hehurthisleg,sohecouldn'tplayinthegame.1.陈述句：that可省略Thestudentssaidtheywouldstudyharder.2
5、.一般疑问句：if/whether是否”)Idon'tknowif(wheather)hewillcometomorrow.3.特殊疑问句：特殊疑问词Idon'tknowwhathewilldonext.Iwon'tleaveuntilhecomesback.（主句为一般将来时，从句则用一般现在时）从属连词/1.时间状语从句2•条件状语从句:3•原因状语从句:IwilltellhimthenewsassoonasIseehim.Wehaven'tmeteachothersincesheleftherelastyear.(主句为现在完成时,从句用一般过去时）Myfathercame
6、inwhileIwasdoingmyhomework.(从句常用进行时态)Ifitisfinetomorrow,wewillgooutforawalk.Heisn'comingbecauseheisbusy.引导状语从句Sinceitisraining,wewon'goout.Ashewasn'tready,weleftwithouthim.Idecidedtostopandhavelunch——forIwasfeelingquitehungry.4•目的状语从句:Theystartedoutearlysothattheycouldgetthereintime.5•结果状语从句:
7、Hestudiedsohardthateverybodylikedhim.6.让步状语从句:Thoughheisachild,heknowsalot.7.比较状语从句:Lighttravelsfasterthansound.
