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1、高三英语语法复习课件:状语从句一.引导时间状语从句1.when,while,as,before,after,until,till,since,eversince,once,assoonas,2.everytime,next/last/eachtime,thefirsttime,themoment,theminute,theinstant3.hardly…when,nosooner…than,scarcely…when其中when,till,until,before,after,assoonas,t
2、hemoment等引导时,如果主句的时态是一般将来时,则从句的时态用一般现在时。when,while,as_______________weweretalking,MrSmithscamein._____theycamehome,Iwascookingdinner.Iwasabouttogotobed_______Iheardsomeoneknockatthedoor.4.________wewerewatchingTV,hewasstudying.5.Heisfat_______hisbroth
3、eristhin.6.______shesang,tearsrandownherface.Conclusion:A:从句为”当……的时候”,从句谓语为延续性动词,主句谓语为非延续性动词(即终止性动词),三者可通用.B当从句的谓语动词为终止性动词,只能用when;表示”正在那时”,也只能用when.C.从句和主句的谓语动词都为延续性动词时,只能用while;while还可作并列连词,表示”而”.D.当强调主句和从句的动作同时发生时,只能用as,译为”一边……一边……;随着……”While/As/Wh
4、enWhenwhenWhilewhileAsbefore,after,sinceHehadleftthetowntheday______shearrived.Itwasnotlong_____helefthishometown.Iplayedfootball_____I(had)finishedmyhomeworkPleasetellherI’llcome_______Idosomeshopping.Itwillnotbelong_____wemeateachotheragain.I_______
5、___(be)athisbedsidesincehe_______(become)ill.It_________(be)twoyearssincewe_______(begin)tousethismachine.beforeafterConclusion:1.before引导的从句是过去式,主句是过去时或过去完成时;.主句为过去时,after从句可用一般过去时代替过去完成时.since从句用过去时态,主句一般用现在完成时.Itis/hasbeen+一段时间+since从句“自从…已经…”Itwas
6、/won’tbe+一段时间+before从句“过了…才...”beforebeforeafterhavebeenbecameis/hasbeenbegantill与until:1.Helivedwithhisparents________hegraduatedfromcollege.2.Not____hetoldmedidIknowthetruth.3.Thechildren___________(willcome)homeuntil/tillit’sdark.4.Itwas_________th
7、ewarwasoverthathereturnedtohisland.till/untiluntilwon’tcomenotuntilConclusion:1.位于句首时.只能用until,不用till.2.not…until可改写为:Itis/wasnotuntil…that强调句.3.notuntil放在句首,主句谓语要部分倒装。一…就…ill._______________________hesawthemonster,heturnedpale.Thespyhad_________retur
8、nedhomethanhewastoldtogotoanothercountry.Wehad____________returnedhomewhenitrained.____________hadwebegunwhenwetoldtostop.Themoment/minute/Assoonasnosoonerhardly/scarcelyHardly/ScarcelyConclusion:hardly…when,nosooner…than,scarcely…when引导,从句用过去