语法项目+时间、条件和让步状语从句+课件.ppt

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1、语法项目时间、条件和让步状语从句1．时间状语从句注意点___________lwaswalkingdownthestreet，Isawsomepolicemen．_______theyheardthenews，theyweresurprised．______thechildwasplayingwithhistoys，hisparentswerewatchingTV.Theyshoutedslogans____theypassedthesquare.when表示从句动作和主句动作同时发生，或先于主句动作；while表示从句的动作与主句动作同时发生，并有延续的含义；as从句动作与主句动作相并发

2、生，常译为“边…边…”。When/WhileWhenWhileas1)when／while／as的用法。Hehadhardlyarrivedwhenitbegantosnow．Hardly_____________whenitbegantosnow．Wehadhardlywalkedintothehallwhenthelecturestarted．Hardly_______walkedintothehallwhenthelecturestarted．_______________shegonetosleepthanthetelephonerangoncemore．_____________

3、__theboyreachedthedoorthanhecameback．hadhearrivedhadweNosoonerhadNosoonerhad2)含有关连词组hardly…when和nosooner…than的两种句子结构表示“一……就……”。当hardly或nosooner位于句首时，要倒装。3)一些表示时间的名词词组,如themoment,eachtime,everytime,thefirsttime,theyear等,也用于引导时间状语从句，这时它们担当着连接词的功能。______________hewenttoShanghai,hepaidavisittohisforme

4、rteacher．A.ForthefirsttimeB.Thefirsttime___________lsawhim,Ithoughtofhisfather．A.ThemomentB.AtthemomentThefirsttimeThemomentEachtimehecame,hewouldbringusalotofflowers．2．条件状语从句注意点YouwillimproveyouroralEnglishifyoukeeponpractising．Hewillnevermakeprogress_______heworkshard．A.ifB.unlessIfI_____you,Iwo

5、uldgiveupsmokingatonce．A.wasB.amC.isD.were1)if和unless是最常用的条件从句连接词，unless在意义上等于“if…not”，并且语气较强。if可用于虚拟条件句，unless则一般不用于虚拟条件句。unlesswere2)incase后接一般现在时、一般过去时或should，它所引导的从句为主句的动作提供理由。Pleasetakeyourraincoatalongwithyouincaseitrains.Healwayssleptbythephoneincasesherangduringthenight．Don'tgoouttomorrowm

6、orningincaseMrLishouldcometovisityou．3．让步状语从句注意点Whateverhappens，wewillnotchangeourmind．Nomatterwhathappens，wewillnotchangeourmind．Howeverdifficulttheworkis,wewilltryourbesttofinishitintime.Nomatterhowdifficulttheworkis,wewilltryourbesttofinishitintime.1)whatever(whenever,however…)和nomatterwhat(whe

7、n，how…)这两种形式都可引导让步状语从句，意义无差异。2)形容词／副词／名词+as／though可引导一个让步状语从句，表示强调。Thoughsheisyoung,sheknowssomuchaboutlife.Youngas／thoughsheis,sheknowssomuchaboutlife.Thoughtheyfoughtbravely,theyhadnochanceofwinning.Bravelyas／t