when和while区别及专项练习---含答案.doc

when和while用法区别专项练习讲解三例句：1. The girls are dancing while the boys are singing.2. Kangkangs mother is cooking when he gets home.3. When/While Kangkangs mother is cooking, he gets home.一、用when或者while填空1._Margowastalkingonthephone, hersisterwalkedin.2._wevisitedtheschool, thechildrenwereplayinggames.3._Sarahwasatthebarbers, Iwasgoingtoclass.4._IsawCarlos, hewaswearingagreenshirt.5._Allenwascleaninghisroom, thephonerang. 6._Ritaboughthernewdog; itwaswearingalittlecoat.7. Hewasdrivingalong_suddenlyawomanappeared.8._Jakewaswaitingatthedoor,anoldwomancalledtohim.9. Hewasreadingabook_suddenlythetelephonerang.10._itbegantorain,theywereplayingchess. 二、用所给动词适当形式填空11. WhileJake_ (look)forcustomers,he_ (see)awoman. 12.They_ (play)footballontheplaygroundwhenit_ (begin)torain.13. Astrangebox_ (arrive)whilewe_(talk). 14.John_ (sleep)whensomeone_ (steal)hiscar.15. Fatherstill (sleep) whenI (get) upyesterdaymorning. 16. Grandma (cook)breakfastwhileI (wash)myfacethismorning.17. Mother (sweep) thefloorwhenI (leave) home. 18. I (read)ahistorybookwhensomeone (knock)atthedoor.19. MaryandAlicearebusy (do) theirhomework.20. Theteacheraskedus (keep)thewindowsclosed.21. Ifollowedit (see) whereitwasgoing. 22. Thestudents (play) basketballontheplaygroundfrom3to4yesterdayafternoon.三、完成下面句子，词数不限1.飞机在伦敦起飞时正在下雨。 It whentheplane inLondon.2.你记得汶川大地震时你在做什么吗？ Do you remember what you when Wenchuan Earthquake .3.当铃声想起的时候，我们正在操场上玩得很开心。 We ontheplaygroundwhenthebell .4.当妈妈下班回家时，你在做什么？ when Mum fromwork?5.当我在做作业时，有人敲门。 Iwasdoingmyhomework, someone thedoor.6.当外星人正在买纪念品的时候，那个女孩报了警。 thealienwasbuyingthesouvenirs, thegirl thepolice.答案：1.while2.when3.while4.when5.while6.when7.When8.While 9.When10.When11.waslooking,saw12.wereplaying,began13.arrived,weretalking14.wassleeping,stole15.was,sleeping got16.wascooking, waswashing17.wassweeping,left18,wasreading,knocked19,doing20.tokeep21.to see22.wereplaying1. wasraining, tookoff2. weredoing,too