小學常考情態動詞（can,must,should,might）及習題情態動詞:情態動詞本身具有一定的詞義，表示說話人的某種語氣或感情，但不能單獨作謂語，通常要和行為動詞一起構成謂語。情態動詞沒有人稱和數的變化，適用于所有人稱，其后要接動詞原形。一、情態動詞can的用法：1、其中情態動詞can表能力時意為“能夠做某事”，后接動詞原形；否定形式為can't或cannot；can的過去式為could。例：1.Tonycanplaybasketball,buthecan'tplaythepiano.Tony會打籃球，但他不會彈鋼琴。2.CanLilyspeakChinese?—Lily會說中文嗎？-Yes,shecan.—是的，她會。3.Whatcanyoudo,Kate?—Kate，你會做什么？-Icanplaytheviolin.—我會拉小提琴。其中情態動詞can表許可或請求別人的許可時，意為“可以”，后接動詞原形，相當于may，但may多用于正式、莊重的場合；can的否定形式為can't或cannot。例：Youcangonowifyoulike.如果你想走，現在就可以走了。-Mark,canIuseyourpen?

—Mark，我能用下你的鋼筆嗎？-Ofcourse.

—當然了。二、情態動詞must表示“必須，應該，一定要”。l

主語是第一人稱I或we時，表示說話人認為有必要或者有義務做某事；主語是第二、第三人稱you、they、he、she等時，表示說話人要求或命令別人做某事。l

must的否定形式為mustnot，縮寫為mustn't，意為“不許；嚴禁”。l

must引導的一般疑問句，肯定回答用must，否定回答用needn't或don'thaveto，意為“不必”。例：Timeisup.Wemustleavenow.時間到了。我們現在必須離開了。Hemustreturnthedictionarytomorrow.他明天必須歸還那本詞典。Childrenmustnotplaywithfire.兒童不準玩火。-MustIfinishtheworktoday?-No,youneedn't/don'thaveto.—我今天必須完成這項工作嗎？—不，你不必。三、情態動詞should意為“應該”，其否定形式是shouldn't“不應該”。should主要有以下兩種常考用法：（1）should表示不可推卸的義務或責任。例：Thepoliceshoulddosomethingabouttheaccident.警方應該就那場事故采取一些行動。Weshouldn'tlaughatothers.我們不應該嘲笑他人。（2）should表示建議或勸告。例：Youshouldreadhisnewbook.

你應該讀一讀他的新書。Peopleshouldexercisemore.人們應該多鍛煉。四、情態動詞must和might均可表推測。但其用法有所不同。（1）must表示對事物的推測，意為“一定，肯定”，只用于肯定句中。例：Thelightison.He

must

beathome.

燈亮著呢。他一定在家。

Yourmothermustbewaitingforyounow.

你媽媽現在肯定在等著你呢。（2）might是may的過去式。might表示推測，意為“可能，也許”，推測的可能性較低。表推測時，might既可用于肯定句，也可用于否定句。例：Hesaidhemightbelate.

他說他可能會遲到。Shemightnotwanttocomewithus.她可能不想和我們一起去。小學常考情態動詞（can,must,should,might）習題一、單選題1.-CanyousingthesonginEnglish?-No,I______.A.can't

B.maynot

C.mustn't

2，-Jack,______yourideabike?-Yes,I______.A.may;can

B.can;can

C.can;can't3.-______canyoudo,Peter?-Ican______cartoons.Who;drawB.What;draw

C.What;draws4.Manystudents______answerthequestion.

It'snotdifficult.A.

can'tB.

canC.

must5.Mysister______singEnglishsongs.Shesingsthemverywell.

She______teachme,too.A.

can;can

B.

must;can

C.can;can't6.Ididn'thearyouclearly.______yousayitagain?A.

Can

B.

Should

C.Must7.-MayIplaybasketballhere?-Sorry,I'mafraidyou______.

can

B.mustn'tC.

can't

8.-Mr.Wang,______

Ifinishmyhomeworktomorrow?-Sorry,you______.Youhavetofinishittoday.A.

can;can'tB.

may;mayC.

can;couldn't9.-MayIuseyourcomputerforawhile?-Sorry,you______.A.

canB.

can'tC.

needn't10.-______Igoouttoplaynow,Mum?-No,you______.Youmustfinishyourhomeworkfirst.May;needn't

B.

May;shouldn'tC.

Can;can't

11.-______Istayheretill5o'clock?-Yes,you______.A.

Might;must

B.

Must;must

C.Must;can12.Look!Thetrafficlighthasturnedred.

We______stopourcar.A.

can

B.

mustn't

C.must

13.Children______playwiththefire(火),becauseitissodangerous.（危險）A.mustn'tB.needn'tC.maynot14.-______Ibringmycomputertomorrow?-No,you______.Wehavecomputershere.May;mayB.Can;can'tC.Must;needn'tYou

______

domoreexercisetokeephealthy.A.

should

B.

could

C.might16.Children

______

eattooquickly.A.

should

B.

shouldn'tC.must17.Asstudents,we______followtheschoolrules.A.

canB.

mayC.should18.Thenewspapersaidit

______

snowsoon.A.

might

B.

could

C.need19.-WhatareyougoingtodothisSunday?-I'mnotsure.I

______

gotothecinemawithmysister.A.

should

B.

might

C.must

用所給詞的適當形式填空。-Whocan_____(speak)Englishinyourfamily?-Mymumcan.三、根據漢語提示，用適當的情態動詞填空。1.Fiona_____（會）playtheviolin,butshe_____（不會）play

badminton.2.-_____（可以）Iuseyourtelephone,Jack?-Sure!3.You_____（可以）watchTVtillbedtime.4.You_____（必須）doityourself.Nobodycanhelpyou.5.You

_____（不應該）drinkanddrive.6.People_____（可能）feelsick（惡心的）whentheyreadbooks

onabus.四、按要求改寫句子。1.Frankcanswimacrosstheriver.（改為否定句）Frank__________acrosstheriver.Ican

singEnglishsongs.（對劃線部分提問）__________youdo?五、根據中文，補全英文句子。我哥哥會開車，但是我不會。Mybrother_____drivea