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1、M9U1othercountries,otherculturesPeriod4GrammarandusageTeachingobjectives:TooverviewtheclausesandtheusageImportantanddifficultpoints:Howtouseclausescorrectly.Teachingprocedures:Step1.RevisionWhataresubordinateclauses•Whenanumberofideasarecombinedinonesentence,someideasaremoreimportantthanothers.
2、Wecanusesubordinateclausestoexpresslessimportantideas.Thesecanbedividedintothreekinds:adverbial,nounorattributiveclauses.Step2.GrammarandUsageWhatareadverbialclauses?Adverbialclausescanexpresstime,place,manner,contract,condition,reason,purposeorresult.Theyareintroducedbyconjunctionsthatindicate
3、themeaningsoftheclause,e.g.,when,where,how,although,if,since,because,inorderthatandsothat.Completethefollowingwithproperconjunctions:AsIdidn’tknowtheway,Iaskedapoliceman.Ifitsnowstomorrow,wewillbuildasnowman.Hedidn’tgotoschooluntilhewaseleven.Wearrivedearly,sothatwegotgoodseats.WeintendtogoU.S.
4、,evenifairfaresareexpensive.Difficultpointsas,when,while的区别1.____thedaywenton,theweathergotworse.(MET)A.WithB.SinceC.WhileD.As2.Ihadjuststeppedoutofthebathroomandwasbusilydryingmyselfwithatowel_________Iheardthesteps.(湖南卷)A.whileB.whenC.sinceD.after3.-I'mgoingtothepostoffice.________you'rethere
5、,canyougetmesomestamps?(NMET)A.As B.While C.Because D.Ifas,when,while都表示主、从句的动作或状态同时发生,但三者意义不尽相同。as和when引导的从句既可表示一点时间,也可表示一段时间,从句中的谓语动词既可以是持续性动词,也可以为短暂性动词,经常可以互换使用;while引导的从句通常表示一段时间,从句中宜用持续性动词作谓语。当从句中的谓语动词为持续性动词时,这三者可以通用.如:MotherwasworriedbecauselittleAlicewasill,especiallyas/when/whilefat
6、herwasawayinFrance.妈妈担心,因为小艾丽思病了,特别是当父亲远在法国的时候。如果从句和主句要表示一个人的两个动作交替进行或同时完成时,则多用as,可译为“一边......,一边......”。例如:Helookedbehindfromtotimeashewent.他一边走,一边不时地往后看。Ithoughtofitjustasyouopenedyourmouth.你一张嘴我就知道你要说什么。(若表示两个短促动作几乎同时发生时,用as的场合多于when.)当主从句之间表示转折或对比关系时,多用while,不用as或when。如:ShethoughtIwastalkin
7、gaboutherdaughter,whileinfact,Iwastalkingaboutmydaughter.她以为我在谈论她女儿,而事实上,我在谈论我的女儿。如果表示从句的动作在主句的动作“之前”或“之后”发生时,多用when(=after),不用as或while。此外,when还含有“atthatmoment”的意思(=andthen),引起的句子不能放在句首,也不能用as,while来替换。例如:Hewasabouttoleavewhenthet