资源描述:
《专题15 状语从句复习课件(1).ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、状语从句GrammarLet'senjoyasongIfyouarehappyandyouknowit,clapyourhand.Ifthegreenlightisn’ton,waitaminute.Ifitrainstomorrow,wewillnotgotothezoo.Ifyouworkharder,you’llpasstheexam.如果绿灯没有亮,就等一下。如果感到幸福,你就拍拍手。如果明天下雨,我们就不去动物园。如果你学习更努力,你就会通过考试。Ifthetelephonerings,___________________.______________
2、___,youwillbelateforschool.LookandsayIwillansweritIfyougetuplateIfyouareill,______________.Ifyourideabikeinthestreet,_______________________.youmustgotoseeadoctoryoumustbeverycareful条件状语从句由if(如果),unless(if...not,除非),so/aslongas(只要)等引导,谈论的是一个有可能发生的事实及其产生的相关的结果,主句用现在时,从句也用现在时;主句用过去时,从句也
3、用过去的某种时态。主将从现具体地讲,主句是一般将来时(包括祈使句和含有情态动词can,may,must等),从句也用一般现在时Wewon’twaitforhim,ifhedoesn’tcomebefore12o’clock.Wewon’twaitforhim,unlesshecomesbefore12o’clock.如果他12点前不来,我们就不等他了。Solongasyoukeepontrying,youwillsurelysucceed.只要你继续努力,你就会成功。Choosetherightanswer:I'dliketogoswimming__thewate
4、risnottoocold.A.forB.unlessC.ifD.whether2.---Doyouknowifhe__toplaybasketballwithus?---Ithinkhewillcomeifhe______freetomorrow.A.comes;isB.comes;willbeC.willcome;isD.willcome;willbe3.___youstudyharder,you'llneverpasstheexam.A.IfB.UntilC.UnlessD.Except4.I’llgoswimmingwithyouifI_____fre
5、etomorrow.A.willbeB.shallbeC.amD.was时间状语从句由连词when(当……时候),while(当……时候),before(在……之前),after(在……之后),till/until(直到),assoonas(一……就……),as(当……时,一边……,一边……),since(从……以来),whenever(无论何时)等引导。当她回来时,我将告诉她每一件事。当我在做作业时,妈妈在做饭。他在工作十年以后就出国了。Iwilltellhereverythingwhenshecomesback.MymotherwascookingwhileI
6、wasdoingmyhomework.Afterhehadworkedfortenyears,hewentabroad.在忘记之前,我要把它写下来。我一到上海就会写信给你。我们一直到雨停了才离开。Wedidn’tleaveuntiltherainstopped.AssoonasIarriveinShanghai,Iwillwritetoyou.I’llwriteitdownbeforeIforgetit.when,while,as均可以表示“当……时候”。when可以和延续性动词连用,也可以和短暂性动词连用;而while和as只能和延续性动词连用,从句常用进行时态
7、。如:Whenhecamein,hismotherwascooking.When(While)wewereatschool,wewenttothelibraryeveryday.当我在做作业时,妈妈在做饭。MymotherwascookingwhileIwasdoingmyhomework.时间状语从句一般不用将来时,如果主句是一般将来时态、祈使句或者是含有将来的动作和意味时,由when,till/until,assoonas引导的时间状语从句一般用现在时态来代替将来时。即主将从现如:Iwilltellhereverythingwhenshecomesback.当
8、她回来时,