when-while-练习题

1.______Margowastalkingonthephone,hersisterwalkedin.2.______wevisitedtheschool,thechildrenwereplayinggames.3.______Sarahwasatthebarber's,Iwasgoingtoclass.4.______IsawCarlos,hewaswearingagreenshirt.5.______Allenwascleaninghisroom,thephonerang.6.______Ritaboughthernewdog,itwaswearingalittlecoat.7.Hewasdrivingalong________suddenlyawomanappeared.8._____Jakewaswaitingatthedoor,anoldwomancalledtohim9.Hewasreadingabook______suddenlythetelephonerang.10.______itbegantorain,theywereplayingchess.11.Shesawataxicoming______thewomanwaswaitingunderthestreetlight.12.theallienwasinthemuseum,Icalledthepolice.13.TheboywaswalkingdownthestreetaUFOlanded.14.thealienwasvisitingthemuseum,theboycalledtheTVstation.15.Iwascleaningmyroomthefirebrokeout.16.Lindashoutedhisname,somepeoplelookedather.用所给动词适当形式填空17.WhileJake__________(look)forcustomers,he_______(see)awoman.18.They____________(play)footballontheplaygroundwhenit______(begin)torain.19.Astrangebox________(arrive)whilewe_________(talk).20.John____________(sleep)whensomeone__________(steal)hiscar.21.Fatherstill(sleep)whenI(get)upyesterdaymorning.22.Grandma(cook)breakfastwhileI(wash)myfacethismorning.23.Mother(sweep)thefloorwhenI(leave)home.24.I(read)ahistorybookwhensomeone(knock)atthedoor.25.MaryandAlicearebusy(do)theirhomework.26.Theteacheraskedus(keep)thewindowsclosed.27.Ifollowedit(see)whereitwasgoing.28.Thestudents(play)basketballontheplaygroundfrom3to4yesterdayafernoon..完成下面句子，词数不限1.飞机在伦敦起飞时正在下雨。ItwhentheplaneinLondon.2.你记得汶川大地震时你在做什么吗？DoyouwhatyouwhenWenchuanEarthquake.3.当铃声想起的时候，我们正在操场上玩得很开心。Weontheplaygroundwhenthebell.4.当妈妈下班回家时，你在做什么？Mumfromwork?5.当我在做作业时，有人敲门。，someonethedoor.6.当外星人正在买纪念品的时候，那个女孩报了警。答案1.while2.when3.while4.when5.while6.when7.When8.While9.When10.When11.While12.when13.when14.while15.when16.when17.waslooking,saw18.wereplaying,began19.arrived,weretalking20.wassleeping,stole21.was,sleep,got22.wascooking,waswashing23.wassweeping,left24,wasreading,knock25,doing26.tokeep27.tosee28.wereplaying1.wasraining,tookoff2.remember,weredoing,tookplace3.werehavingfun,rang4.whatwereyoudoingwhen,camebackhome5.while/whenIwasdoingmyhomework,knockedat6.whilethealienwasbuyingthesouvenirs,thegirlcalledthepolice.（一）、when，while都有“当……时候”的意思。when既可表示某一点时间，也可以表示某一段时间。在when引导的时间状语从句中，其谓语动词可以是延续性的，也可以是非延续性的，可与主句中的谓语动词同时发生，也可在其后发生。1、Iwasjustreadingabookwhenshecameintomyroom.她走进我房间时，我正在看书。2、Wereyouwritingwhentheteachercamein?老师进来的时候，你在写信吗？3、Whenhewasachildhewasalwaystryingoutnewideas.他小时候就常常试验一些新的设想。（二）、while只能表示某一段时间，不能表示某一点时间。在while引导的时间状语从句中，其谓语动词只能是延续性的，而且也只能与主句中的谓语动词同时发生或存在。例如：1、WhileJimwasmendinghisbike,LinTaocametoseehim.正当吉姆修自行车时，林涛来看他。2、Youcan’tdoyourhomeworkwhileyou’rewatchingTV.你不能一边看电视一边做家庭作业。（三）、另外，when和while的区别还在于：while引导的时间状语从句多用进行时态，而when引导的时间状语从句多用一般时态。例如：1、Whiletheyweretalking,thebellrang.正在他们谈话的时候，上课铃响了。2、Iwasdoingmyhomeworkwhenmymothercamebackhomeyesterdayevening.昨天晚上妈妈回家的时候，我正在做家庭作注意：1)如主句谓语动词表示的是短暂动作，从句时间状语指一段时间，whenwhileas三者可通用。Petercameinwhile/asIwaswatchingTV.当Peter进来的时候我正在看电视。IwaswatchingTVwhenPetercamein.当Peter进来时我正在看电视。2)as和when可与非延续性动词连用，而while只能与延续性动词连用。例如：Hecameinwhen/asIwasgoingtobed.我正要上床睡觉，他进来了。3)as和while可用来指一段时间，但as强调主句与从句表示的动作同时发生，while强调主句表示的动作是在while从句的动作延续中发生。Asmymothersangthoseoldsongs,tearsrandownhercheeks.当我妈妈唱起那些老歌时，眼泪顺着她的脸颊流了下来。Icameinwhilehewasreadinganinterestingbookinhisroom.