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1、条件状语从句和让步状语从句1.条件状语从句引导状语从句的连接词有:if,unless=ifnotaslongasonconditionthatincaseprovided/providing(that)suppose/supposing(that)If虚拟条件句时间If条件句主句过去haddonewould/could/should/mighthavedone现在did/werewould/could/should/mightdo未来did/wereweretoShoulddowould/could/shoul
2、d/mightdoII.unless=if…not…Wecan’twritetoMaryunlessshetellsusheraddress.Wecan’twritetoMaryifshedoesn’ttellusheraddress.III.as/solongas(只要)=onlyif1)IwillnevergiveuplearningaslongasIlive.2)Youmayborrowthebookaslongasyoukeepitclean.IV.onconditionthat（条件是）We’llle
3、tyouusetheroomonconditionthatyoukeepittidy.V.incase(万一）You’dbettertakeyourraincoatwithyouincaseitrains/shouldrain.VI.suppose/supposing/provided/providingSuppose/Supposing/Provided/Providing(that)theyrefuseus,whoelsecanweturntoforhelp?让步状语从句引导让步状语从句的连词有：Altho
4、ugh,though,as,evenif,eventhough,nomatter+疑问词,疑问词+everwhile,whether…or…although,though,as---虽然although常放在句首although不倒装Though可以倒装也可不用于倒装as必须倒装（特殊结构）Althoughitwasraining,theplanemanagedtotakeoff.Thoughitwasnothisfault,hetookalltheblame.As:（虽然）必须用一种特殊的倒装结构adj./n
5、./adv./v.放句首+as+陈述语序1.cleverasheis,heisn’tdiligent2.Childasheis,heknowsalot.3.Muchashelikesit,hewillnotbuyit.4.Tryashemight,hecan’tfindajob.（注：这里的as可以换成though)Evenif/eventhough---即使Evenifyoudon’tlikeyourboss,youshoulddoyourwork.EventhoughImightbewrong,Iwillg
6、omyway.nomatter+疑问词=疑问词+ever1.Whenever(nomatterwhen)youcometoourcountry,youwillbewarmlywelcomed.2.Wherever(Nomatterwhere)hegoes,healwaysbringstwobodyguardswithhim.3.Thefathercouldn’tmakehisdaughtersmilehowever(nomatterhow)hardhetried.4.Theoldmanwouldn’tbelie
7、veanythingwhatever(nomatterwhat)yousaid.5.Whateverb(nomatterwhat)gooduseyouhavemadeoftime,youcan’tfinishthetask.While---尽管WhileIhavesympathyforyou,Ican’thelpyou.Whileit’snoneofmybusiness,Iwillwatchyou.Whether---不管，常与ornot连用Whetherheisgoodornot,thecompanydeci
8、dedtosendhimabroad.Whetherhisproposalispracticalornot,thedepartmentplanstoadopt.
