专题15 状语从句复习课件(1)

状语从句Ifyouarehappyandyouknowit,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,___________________._________________,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:1.I'dliketogoswimming__thewaterisnottoocold.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_____freetomorrow.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.MymotherwascookingwhileIwasdoingmyhomework.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。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.当她回来时，我将告诉她每一件事。选择正确的单词完成句子。1.Somestudentswerereading_____(while/when)otherswerewriting.2.Ididn’tgotobed_____(until/after)mygrannycamebackhome.3.Motherasksmenottoplaycomputergames_____(before/when)Ifinishmyhomework.√√√4.Youmustbetired_____(after/before)workingforeighthourswithoutarest.5.Don'tworry.I’llcallyou_____(assoonas/until)Igetthenews.6._____(When/While)classbegan,westoppedtolistentotheteachercarefully.√√√原因状语从句常用的引导连词有because,as,for和since。because用于表示直接原因,回答why提出的问题，语气最强；对于显而易见的原因，常用as或since。as用于说明原因,着重点在主句，常译成“由于”；since表示显然的或已知的理由或事实，常译成“既然“,as和since的从句常放在主句之前，而because的从句常放在主句之后；for因为、由于，是对某种情况加以推断或解释，对前一分句进行附加说明；它引出的分句必须放在另一分句后。Hedidn’tcometoschoolbecausehewasill.Asitisraining,wewon'tgothezoo.Sinceyoucan’tanswerthequestion,I’llasksomeoneelse.Theremustbenooneinthehouse，forthedoorisclosed.because和so不能同用在一个句子里,如：我们不能说：Becauseitrainedhard,sowestayedathome.应该说：或Itrainedhard,sowestayedathome.Becauseitrainedhard,westayedathome.目的状语从句常用的引导连词有sothat和inorderthat译为：以便,为了,目的是我们早起以便能赶上第一班火车。为了将来能找到更好的工作，他努力学习。Weusedthecomputerinorderthatwemightsavetime.Wegotupearlysothatwecouldcatchthefirsttrain.Hestudieshardsothathecouldworkbetterinthefuture.我们使用电脑以便能够省时。常用引导词：so所以，so...that…如此……以致于,such…that…如此……以致于常用句型：so+adj.(adv.)+thatso+adj.+a(an)+n.+thatsuch+a(an)+adj.+n.+thatsuch+adj.+n(s)+that我的铅笔在地上，所以我没看见它。他是如此的穷以至于买不起自行车给他儿子。Heissopoorthathecan’tbuyabikeforhisson.她是如此好的一个老师以至于每个人都喜欢她。Sheissuchagoodteacherthateverybodylikesher.结果状语从句Mypencilwasonthefloor,soIdidn’tseeit.注意sothat与so一词之差，前者连接目的状语从句，而后者连接结果状语从句。从句中动词的时态也有区别：目的状语从句中时态表示将来、可能性，带有情态动词can,could,may,might等。而结果状语从句中表示已经发生。Wegotupearlysothatwecouldcatchthefirsttrain.Theygotuplatesotheydidn'tcatchthefirsttrain.目的状语从句结果状语从句(1)让步状语从句通常由although,though,eventhough（尽管……,虽然……)等连词引导。例如：Thoughheisyoung,heknowsalot.AlthoughIamtired,Imustgoonworking.(2)although(though)和but不能用在同一个句子中。如：我们不能说：Thoughitwasraininghard,buthestillwentout.应该说：或让步状语从句Thoughitwasraininghard,hestillwentout.Itwasraininghard,buthestillwentout.1.I'llgotoseethefilmwithyou______Ihavetimethisevening.A.whetherB.soC.ifD.when2.Thepoliceaskedthechildren_______crossthestreet________thetrafficlightsturnedgreen.A.not;beforeB.don’t;whenC.notto;untilD.not;after3.Tomwillcallmeassoonashe___Shanghai.A.arrivesB.willreachC.arrivesinD.getto4.Hetookoffhiscoat_______hefelthot.A.becauseB.asC.ifD.since5.You’llfailinchemistryagain______youworkharder．A.ifB.unlessC.whetherD.though6._____hecametostudyintheuniversity,hehasmademuchprogressinthestudyofEnglish.A.WhileB.WhenC.SinceD.After7.Igotthere___late___Ididn'tseehim.A.too;toB.such;thatC.so;thatD.so;as8.Theteacherraisedhisvoice_______allthestudentscouldhearhim.A.soB.sothatC.becauseD.inorderto9.____hehaslittleknowledge,theoldworkerhasalotofexperience.A.AlthoughB.BecauseC.IfD.but10.--What'syourplanforthesummerholidays?--I'llgotoBeijing_____theschooltermends.A.inorderthatB.sothatC.assoonasD.eventhoughTherewasanoldpeartreeinaman’sgarden.Inthepast,thetreefruitedeveryyear,sothemanwouldgetmany1._______.Butnow,thetreegotold.Therewerenomorepearsfortheman