while的用法

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while的用法一、while作名词用,表示“一会儿”“一段时间”1.Shelikestoliedownforawhileafterlunch.2.Comingtoanothercountrytostudyrequiresabigadjustmentandittakesawhiletofitin.while的用法二、While作连词(1)引导时间状语1.Wemuststrikewhiletheironishot.趁热打铁。2.Whileshewaslisteningtotheradio,shefellasleep.(2)引起让步状语从句,意思是“虽然…但是….”、“尽管…但是…”(多放于句首)1.Whileheloveshisstudents,heisverystrictwiththem.while的用法2.Whiletheseexperimentsareinterestinganduseful,itisimportanttorememberthattheymaynotalwaystellusmuch.虽然这些实验很有趣也有用,但是很重要的是要记住,这些实验也可能不会告诉你很多。while的用法(3)引起条件状语,意思是“只要”1.Whilethereislifethereishope.2.Whilethereisawaythereisaway.三、While作并列连词用,意思为“而,然而”,表对比。而but表转折。注意用心比较体会while与but的句中用意1.Somepeoplewastefoodwhileothershaven'tenough.2.Thesonwashavingagoodmealathome,whiletheparentswereworkinginthefields.3.Ioughttohavehelpedher,butInevercould.while的用法四.while,when,as的用法区别都译为“当…的时候”,区别为:when后的从句谓语动词既可是延续性动词,也可是短暂性动词,而且还可作并列连词,译为“这时”。但以下句型一定用when,作并列连词:句型A:beabouttodo…when…正要做…这时(发生另一事)句型B:was/weredoing…when…正在…这时(发生另一事)句型C:haddone…when…刚要做…这时(发生另一事)while的用法1.Wewereabouttosetoutwhenitbegantorain.2.Hehadhardlysatdownwhenhismobilerang.3.IwaswalkingalongthebankoftheriverwhenIfellintoit.while的用法while后的从句谓语动词只能是延续性动词,强调主从句的两个动词同时发生;while也可作并列连词,表示两个动作的对比,译为“而”“然而”。as则表示两个变化中的动作的同时性,译为“一边…一边…”。1.Whilehismotherwascookinginthekitchen,theboyfellasleepinthechair.(在一个延续动作过程中发生另一个动作)2.Hehurriedhome,lookingbehindashewent.while的用法■巩固练习:一.改错1.SheisfatbutIamthin.2.Itwasrainingwhilewearrived.3.Shesangwhilehewalked.4.Idon'tknowthemwell,whiletheyaremyneighbors.while的用法答案:1.but改成while。因为fat与thin形成对比2.while改成when。因为arrived为短暂动词3.while改成as。表示“一边…一边…”4.Whiletheyaremyneighbors,Idon'tknowthemwell.主句和从句颠倒位置。while的用法二.选择最佳答案:1.ShethoughtIwaspraisingherchild,_____,infact,Iwasscoldinghimforhisbadbehaviorsatschool.A.whatB.whileC.sothatD.therefore2.Idoeverysinglebitofhousework____myhusbandBobjustdoesthedishesnowandthen.(2004全国卷II35)A.whileB.sinceC.whenD.as3.______itisexpectedthatstudentscomeuniversitywiththeabilitytotakeagoodsetofnotes,thisisnotalwaysthecase.A.WhenB.AsC.ForD.While4.Wewereswimminginthelake___suddenlythestormstarted.A.whenB.whileC.untilD.before5.---Youseemtohavehadthatcarforyears.---Yes,it'singoodcondition,butIshouldsellit____itstillruns.A.ifB.beforeC.becauseD.whilewhile的用法二.1.选B。while并列连词,表对比,意为,“而,但是”2.选A.while含有对比之意,意为“然而”。3.选D.在此句中while表示“尽管”。4.选A。wasdoing···when···一个固定句式。5.选D.意思为“趁着···”

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