高中英语 Module4课件 外研版选修7 课件VIP免费

partsofthesesentencesindicatethe“time”.ThemomentIgetthemoneyI'llsendtheticket.Iwasjustgettingintothebathwhenthetelephonerang.Hegetsmoreattractiveashegetsolder.WheneverIgotheretheyseemtobeinbed.I'vebeenverybusysinceIcamebackfromholiday.状语从句状语从句在主从复合句中修饰主句中的动词，形容词或副词，按意义可分为时间、地点、原因、目的、结果、条件、方式、比较、让步等状语从句。从句可放在句首，也可放在句末。放在句首时，从句后面常用一个逗号，放在句末时，从句前一般不用逗号。本模块着重讲解时间状语从句。时间状语从句：引导时间状语从句的从属连词有：when,while,as,whenever,before,after,since,till,until,assoonas,once,themoment,immediately,nosooner…than,hardly…when,bythetime,everytime,lasttime…等。（1）when,as,while（从属连词）when既可引导持续性动作，又可引导短暂性动作。它可以表示主句的动作和从句的动作同时发生，或从句的动作发生在主句动作之前。如：WhenIwasaboy,IusedtogototheseashoreonSundays.（同时）Whenthelessonwasover,webeganourwriting.（从句动作在前）as引导持续性动作，侧重主句和从句的动作同时发生。Hehurriedhome,lookingbehindashewent.Isawyoursisterasshewasgettingonthebusyesterday.Hesangashewalked.while指的是“在某一时间里”，“在……期间”，从句里的动作必须是持续性的，它也强调主句和从句动作的同时发生，往往侧重主句和从句动作的对比。如：WhilehewasinLondon,hestudiedmusic.WhilewewerewatchingTV,hewaswritingacomposition.当when,as,while表示“在…一段时间里”，主从句的动作同时发生时，可以换用。如：While(When/As)wewerediscussing,Mr.Smithcamein.*when可表示“如果”。如：Don’tbeafraidofaskingforhelp_____itisneeded.(2003全国）A.UnlessB.sinceC.althoughD.when*while可表示“虽然，尽管”。如：1)____modelingbusinessisbynomeanseasytogetinto,thegoodmodelwillalwaysbeindemand.(2004浙江）A.WhileB.SinceC.AsD.If*_____Iacceptthatheisnotperfect,Idoactuallyliketheperson.(2004江苏）A.WhileB.SinceC.BeforeD.Unlesswhen和while（并列连词）while表示对照的意思；when表示“这时，突然……”1)Idoeverysinglebitofhousework____myhusbandBobjustdoesthedishesnowandthen.(2004广西）A.sinceB.whileC.whenD.as2)Hewasabouttotellmethesecret____someonepattedhimontheshoulder.(2002上海）A.asB.untilC.whileD.when3)Wewereswimminginthelake____suddenlythestormstarted.(2004北京春）A.whenB.whileC.untilD.before4)Jasminewasholidayingwithherfamilyinawildlifepark____shewasbittenonthelegbyalion.(2004上海）A.whenB.whileC.sinceD.before(2)till和until①如果主句谓语动词是持续动词，通常用肯定式的主句，表示“直到……为止”。如：Iworkedtill(until)hecameback.1)Agoodstorytellermustbeabletoholdhislisteners’curiosity_____hereachestheendofthestory.(2003上海）A.whenB.unlessC.afterD.until2)Weweretoldthatweshouldfollowthemainroad___wereachedthecentralrailwaystation.(2004辽宁）A.wheneverB.untilC.whileD.wherever②如果主句谓语动词是瞬间动词，则用否定式的主句表示“直到……才”。如：Ididn’tgotobeduntil(till)hecameback.3)---Washisfatherverystrictwithhimwhenhewasatschool?---Yes.Hehadneverpraisedhim_____hebecameoneofthetopstudentsinhisgrade.(2003春）A.afterB.unlessC.untilD.when③放在句首表示强调时一般用until。如：Untilhereturns,nothingcanbedone.4)Notuntilallthefishdiedintheriver___howseriousthepollutionwas.(1995全国)A.didthevillagersrealizeB.thevillagersrealizedC.thevillagersdidrealizeD.didn’tthevillagersrealize*如果before引导的从句位于主句之后，有时不能译成“在……之前”，而要译成“就”、“才”等。如：ThestrugglelastedfouryearsbeforetheNorthwonintheend.Healmostknockedm...