仁爱科普版八上英语Unit 2 Topic3 Must we exercise to prevent the flu Section B 同步练习（含答案）

Topic3MustweexercisetopreventthefluSectionB同步练习一、单项选择1.

—Mustweexercisetopreventtheflu?—No,we______.A.mustn'tB.needn'tC.can'tD.shouldn't2.

You______watchTVtoomuch.It'sbadforyoureyes.A.shouldn'tB.mustn'tC.needn'tD.maynot3.

—Ineedtorelax.—Butyou______doyourhomeworkfirst.A.shouldB.couldC.wouldD.might4.

—Canyouhelpmewithmyhomework?—Sorry,I______.Ihavetodosomecleaning.A.can'tB.mustn'tC.shouldn'tD.needn't5.

Heisbusy.You______askyourclassmatesforhelp.A.shouldB.couldC.wouldD.might6.

I'msureI______finishmyhomeworkwiththehelpofthecomputer.A.canB.couldC.mayD.might二、用所给词的适当形式填空1.

Youneedn't______(come)ifyouarebusy.2.

Sheshould______(do)herhomeworkbyherself.3.

Wemustn't______(be)lateforclass.4.

Couldyouplease______(help)mewithmyEnglish?5.

Hemay______(go)totheparktomorrow.三、句型转换1.

Youmustn'twatchTVtoomuch.(改为同义句)You____________towatchTVtoomuch.2.

Sheshoulddoherhomeworkfirst.(改为否定句)She____________herhomeworkfirst.3.

CanyouhelpmewithmyEnglish?(作肯定回答)Yes,____________.4.

I'msureIcanfinishmyhomework.(改为一般疑问句)____________sureyoucanfinishyourhomework?5.

Heisbusy.(改为同义句)He____________.四、根据汉语意思完成句子1.

你不应该吃太多垃圾食品。You______eattoomuchjunkfood.2.

我们必须保持房间干净。We______keeptheroomclean.3.

他可能今天下午来。He______comethisafternoon.4.

你能自己做这件事吗？Canyoudoit______?5.

别忘了带相机。Don'tforget____________yourcamera.答案与解析一、单项选择1.

Bmust引导的一般疑问句，否定回答用needn't或don'thaveto，故选B。2.

Ashouldn't表示“不应该”，“你不应该看太多电视，对眼睛不好”，故选A。3.

Ashould表示“应该”，“但是你应该先做作业”，故选A。4.

Acan't表示“不能”，“对不起，我不能。我得打扫卫生”，故选A。5.

Ashould表示“应该”，“他很忙，你应该向同学求助”，故选A。6.

Acan表示“能够”，“我确信在电脑的帮助下我能够完成作业”，故选A。二、用所给词的适当形式填空1.

comeneedn't是情态动词，其后接动词原形。2.

doshould是情态动词，其后接动词原形。3.

bemustn't是情态动词，其后接动词原形，be动词的原形是be。4.

helpcould是情态动词，其后接动词原形。5.

gomay是情态动词，其后接动词原形。三、句型转换1.

shouldn'tbemustn't=shouldn't，“不应该”。2.

shouldn'tdoshould的否定形式是shouldn't，其后接动词原形。3.

ofcourse肯定回答用ofcourse或sure。4.

Areyou陈述句中有be动词am，变为一般疑问句时，I变为you，am变为are并提到句首。5.

isbusy“isbusy”=“isn'tfree”，表示“忙”。四、根据汉语意思完成句子1.

shouldn't“不应该”是shouldn