情态动词（七大题型总梳理）-2023-2024学年上海中考英语一轮总复习（原卷版+解析）

攻略04情态动词（七大题型总梳理）

模块导航

・模块一can/could/beableto用法分述。

,模块二may/might用法分述。

,模块三must/haveto用法分述。

・模块四should/oughtto用法分述。

,模块五need用法分述。

・模块六will/would用法分述。

,模块七wouldrather/hadbetter用法分述。

模块一、can/could/beableto用法分述O

1.can/could的基本形式和用法：

could是can的过去式，或作为委婉语

a.用于请求或允许，意为“能……”

>—Could/CanIhavethetelevisionon?

-Yes,you./No,you.

b.在疑问句和否定句中表示推测，意为“可能……吗？”、“不可能”

>他可能是坏人吗？他不可能是坏人。

heabadguy?No,heabadguy.

c.用于陈述句，表示事情发生的“理论上的可能性”，意为“会”

>事故总会发生。

d.表示能力，意为“能够”

>HespeakEnglishwhenhewasyoung.

could作为can的过去时/委婉语，请打勾

过去时委婉语

表请求或允许

表推测

表可能性

表能力

2.can/could与beableto的差别：

a.表示能力时，can表示现在、could表示过去；beableto可以用于任何时态，也可以前

加情态动词或助动词，如：willbeableto,havebeenableto,shouldbeableto

b.用于过去时中，could表示“有能力做”而“并不一定做成”；若是“实际得以做成某事”，只

能用was/wereableto=managetodosth.

＞司机得以逃生，其他的乘客没有逃出来。

Thedriverescape,butthepassengersfailedtodoso.

Ms.Wangcouldsingwellwhenshewasyoung.

Iwasabletopasstheexamination.我通过了考试.（不仅有能力，而且实际上做到了.相当于

Isucceededinpassingtheexamination.）

Icouldpasstheexamination.我当时有能力通过考试.（有能力，但实际上不一定做得到）

can/could与beableto差别总结

can/couldbeableto

表请求或允许q

表推测q

表可能性q

表能力q

时态

用于过去时中含义

3.can/could的惯用语：

a.cannothelpdoingsth•情不自禁做某事

>我情不自禁地笑了。

Icannothelp.

b.cannothelp/choosebutdosth.不得不,只能做某事

>我不得不告诉她真相。

Icannothelp/choosebut.

c.cannot...too+adj./adv.无论怎样都不为过，越...越好

A你越小心越好。

Youcannottoo.

d.cannot...without没有...就不能

>Onecannotsucceedwithoutperseverance.

没有就不能。

e.couldnot+比较级=最高级

>—Goforapicnicthisweekend,OK?

—Icouldn'tagreemore.

★真题试炼*

1.Youmaynotbeabletocontrolallthethingsthathappentoyou,butyoudecidenottobereducedby

them.

A.shouldB.mustC.needD.can

2.Thevolunteerspokeasclearlyasshetomakethevisitorsunderstandher.

A.possibleB.canC.couldD.areable

3.——Look,Sarah,there'sarednotebookonthedesk.Whoseisit?

-It_________beTom'sashisnotebookisblue.It__________beLily'sashernameisonthecover.

A.mustn,t;mustB.mustn't;canC.can5t;mustD.can?t;may

4.It_______beTomthatparkedthecarhere,asheistheonlyonewithoutacar.

A.mayB.can'tC.mustn'tD.shouldn't

5.—Mom,couldIwatchTVnow?

-No,you__________.Youmustfinishyourhomeworkfirst.

A.can'tB.canC.needn'tD.need

6.——Thereisanewartmuseuminourcity.You________missit.

一Thankyou.Iwont

A.can'tB.mustC.needn'tD.mustn't

7.一Mom,duringyourbusinesstrip,mustIwatertheflowerseveryday?

一No,you_______.Youcanwateritonceaweek.

A.mustn'tB.needn'tC.can'tD.couldn't

8.一________youhelpme?Ican'tworkouttheproblem.

——Sure.

A.CouldB.NeedC.ShouldD.May

9.Thepublicsigninthelibrarymeansneonlesmokethere.

A.couldn'tB.couldC.mustn'tD.must

10.-________yougivemeahand?Ican'topenthisbottle.

——Noproblem.

A.ShouldB.MustC.CouldD.Need

模块二卜may/might用法分述O

1.may/might的基本形式和用法：

might是may的过去式，亦可作委婉语

a.表示请求或允许，意为“可以……”

>—MayIsmokehere?

—Yes,you.

—No,you.

b.表示对事实的不太确定的推测，意为“可能”

>Thegreatestfoolmayaskmorethanthewisestmancananswer.

c.may放在句首，表示祝愿

>场景连线：

MayGodblessyou!******^^^ongrandpa9sbirthday

Mayyousucceedinyour■onthegraduationceremony

Mayweneverforgeteachother!ontheweddingceremony

Mayyoulivelongandprosperthemid-termexam

Mayyouloveforeverandhavealovelybabysoo&S^onthefarewelldinner

Maygoodfortunefindyouthisyear!duringtheSpringFestival

2.may/might的惯用语：

a.maywelldo理所当然，有足够的理由=havegoodreasonto

>我有足够理由不去上学。

Imaywell.

b.may/mightaswelldo最好

>你最好呆在家里。

Youmay/mightaswell.

c.may/mightaswelldoAasdoB与其做B不如做A

>Onemayaswellnotknowathingatallasknowitbutimperfectly.

★真题试炼★

11.——Who'sgoingtogiveusaspeechnextFridayafternoon?

-I'mnotsure.ItbeMr.Brown,thenewforeignteacherfromFrance.

A.mustB.mayC.willD.can

12.-Doyouhaveanyplansforthecomingsummerholiday?

-I'mnotsure.IgotoQingdao.

A.shouldB.mustC.canD.may

13.一Sam,whatpresentwillyougiveyourmotherforhercomingbirthday?

-Ihaven'tdecidedyet.Imakeherabirthdaycakebymyself.

A.mustB.mayC.wouldD.should

14.WiththerapiddevelopmentofAI,manypeopleworrythattheylosetheirjobsoneday.

A.mayB.shouldC.mustD.can

15.-MustIfinishExercise1now?

一No,you.Youdoitafterschool.

A.needn't;mayB.mustn't;mayC.mustn't;mustD.mustn't;can

16.一Whereareyougoingthisweekend?

-I'mnotsure.IgocampingontheMoonBeach.It'ssaidthatifsafascinatingplacetotakeaholiday.

A.can'tB.needC.mightD.must

17.一DidyoufindyourEnglishnotebook?

一No.IsearchedalltheplaceswhereIhaveleftit,butwithnoluck!

A.mustB.shouldC.canD.might

18.-Alex,wheredidyouleaveyourschoolbag?

—Well,Ican'tremember.Itookpartinaconcertyesterday,soitbeinthemusichall.

A.shouldB.mightC.mustD.need

19.Youranswerberight,butI'mgoingtochecktomakesure.

A.mightB.can'tC.mustD.mustn't

20.一When?Monday?I'mafraidMondaybeaproblemforme.

一Butwhy?YourMondayiswideopen.

A.needB.needn'tC.mightnotD.might

模块三、must/haveto用法分述O

1.must的基本用法：

a.用于询问、命令或建议，意为“必须"，mustift意为“禁止”

>—Must/NeedIleavetheofficeafterfiveo9clock?

—Yes,you.

—No,you.

b.用在肯定句中表示较有把握的推测，意为，，一定”

>他现在一定在公司。

Heintheofficenow.

▼Attention，

must表对现在的状态或现在正发生的事情的推测时，must后面通常接be(doing)

比较：Youmustbesleepingnow.VS.Youmustsleepnow.

表猜测用法小结：

对现在(正在进行)对过去

肯定句

否定句

疑问句

c.must表示自然规律或必然结果，意为“必然”

>Allmenmustdie.

2.must与haveto的差别：

must意为"必须"时，与haveto的意思相同，但：

a.haveto表示客观条件有所要求，must表示说话者主观上认为必要

＞他说他们必须努力工作。（主观上要做这事）

Hesaidthattheyworkhard.

＞居民们不得不忍受广场舞的噪音。

Theresidentsstandthenoiseofthepublicsquaredancing.

b.只有在间接引语中，must才能表示过去

＞判断下列句子对错：

c.在否定结构中，don'thaveto表示“不必要%mustn't表示"不允许,,

＞你不一定要把此事告诉他。

Youtellhimthis.

＞你一定不要把这件事告诉他。

Youtellhimthis.

表“必须”比较:

musthaveto

主客观

时态、人称、数

的变化

用于过去时

否定形式含义

3.haveto补充说明：在口语中havegotto亦可表示义务和需要，与haveto基本同义

＞他现在必须走了。

(用havegotto)Hehasgottogo.

疑问句：togo?

否定句：Hetogo.

(用haveto)Hehastogo.

疑问句：togo?

否定句：Hetogo.

★真题试炼★

21.一Whoseisthepencilbox?

-ItbeTom's.Lookathisnameonthecover!

A.canB.mayC.needD.must

22.一WhenwetalkaboutdeliciousfoodinWuhan,HotDryNoodlesbementioned.

-Withoutdoubt,itisquitepopular.

A.mightB.mustC.couldD.shall

23.-MayIsmokehere?

一No,you.Nosmokingintheschoolyard.

A.needn'tB.wouldn'tC.couldn'tD.mustn't

24.ThebookbeMary's.Wecanseehernameonit.

A.mustB.needC.can'tD.needn't

25.-Whodoesthemathbookonthefloorbelongto?

一ItbeSandy's.Look,hernameisonthecoverofthebook.

A.mightB.mustC.shallD.may

26.一MissLi.Idon'twanttosaysorrytoDaniel.

-I'mafraidyou.Afterall,youbrokehisglasses.

A.mayB.havetoC.mustn'tD.needn't

27.一Chris,shallwegotothebookstorethisafternoon?

-I'msorry,David,butImeetmycousinatthetrainstation.

A.canB.mayC.couldD.haveto

28.Itwasrainingwhentheschoolwasover,sowestayintheclassroom.

A.mustB.havetoC.hadtoD.mustn't

29.—Ifinishmyworknow?

-No,you.Youcandoitlater.

A.May;needn'tB.Must;don'thavetoC.Can;couldn'tD.Must;mustn't

30.-Mum,canIwearmyjeanstoschool?

-No,youwearyourschooluniform.Thisistheschoolrule.

A.canB.mayC.havetoD.must

模块四should/oughtto用法分述O

1.should的基本用法：

a.should表示劝告、建议、命令，意为“应当、要”，其同义词是oughtto/besupposedto,

在疑问句中，通常用should代替oughtto

>Youshoulddoexercises.

=Youdoexercises.

=Youdoexercises.

b.用于表达合理的推断，意为“应该”

>三点到了，足球赛应该快要开始了。

Ifsthreeo'clock.Thefootballgamesoon.

c.用于虚拟语气，意为“应当”

>I(that)youfinishyourhomeworkfirst,(should)do

>IfIyou,Ishouldaccepttheirsuggestion.

>Nowhehastopayafine.Hehavetriedtostealaride.

▼Attention，

shouldhavedone本应该做某事（而实际上没有）

shouldn5thavedone本不应该做某事（而实际上做了）

d.表示义务，意为“应该做”，且表示一种道义上的责任

>Ishouldhelphimbecauseheisintrouble.

e.表示惊讶、忧虑、惋惜等情绪，意为“竟会、竟然”

>Youcan'timaginethatawell-behavedgentlemanshouldbesorudetohisgirlfriend.

2.oughtto的用法：

>肯定句：Heoughttofinishthetask.

>一般疑问句：finishthetask?

>否定句：Hefinishthetask.

★真题试炼*

31.Wedosomehouseworkinourfreetimetoletourparentshavearest.

A.canB.mightC.couldD.should

32.Historyisthebesttextbook.Wewillmoveforward,butweneverforgetwhatwehaveexperienced.

A.needB.shouldC.mightD.can

33.一Couldyoupleasehavemycarreadytoday?

一Sure.Thedamage（损坏）isnotserious,soitbereadyby4p.m.

A.canB.shallC.needD.should

34.—China'sfuturedealswiththeworldcommunity.

——Sowe________makegreateffortstomakeourcountrymuchstronger.

A.couldB.mayC.shouldD.will

35.—Howmuchwaterdoweneed?

一Sixbottlesbeenough.

A.needB.shouldC.hadbetterD.wouldrather

36.Theearthisourhome.Everyonetakecareofit.

A.usedtoB.needtoC.shouldtoD.oughtto

37.Everyoneoughtagreenerperson.

A.isB.beC.tobeD.become

38.Whilewatchingthefilm,youmakeanynoise.

A.notoughttoB.oughtnottoC.don?toughttoD.oughttonot

39.Studentsoughtthetruth.

A.totellB.tellC.tellingD.told

40.Readerstalkloudlyinthelibrary.

A.oughtnotB.oughttoC.oughttonotD.oughtnotto

模块五1need用法分述

1.need的基本用法：请在下表内填空（dare跟need用法相同）

She,need/dare,go实义动词情态动词

therealone

现在Shegotherealone.

过去Shegotherealone.

否定Shegotherealone.Sheneedn,t/daren,tgo

therealone.

疑问Doessheneed/daretoNeed/Dareshegothere

gotherealone?alone?

2.sth.needdoing是主动形式表示被动=needtobedone（见被动语态详解）

>花园里的花需要浇水了。

Theflowersinthegardenneednow.

★真题试炼*

41.一Dad,mustIbecomeadoctorlikeyouwhenIfinishuniversityinthefuture?

.Youcanmakeyourowndecisionanddowhateveryoulike.

A.Yes,youmustB.No,youneedn?tC.Yes,youcanD.No,youcan't

42.Itseemstorain.Youwatertheflowersinthegarden.

A.mustB.needn'tC.shouldD.mustn't

43.一Mustwefinishdoingtheprojecttoday?

一No,you.NextweekisOK.

A.can'tB.maynoC.needn,tD.mustn't

44.一MustIwritethereportbyhand,Mrs.Taylor?

-No,you.Youcanwriteitonthecomputer.

A.needn'tB.mustn'tC.can'tD.shouldn't

45.一Iheardyouwenttoseeadoctorthismorning.

一Thafstrue.Butyouworryaboutme.Ifsnotserious.

A.needn'tB.mustn'tC.couldn'tD.can't

模块六Nwill/would用法分述。

1.表示恭谦的请求、建议等，常用于疑问句，would比will委婉客气

>Wouldyoumindmyclosingthewindow?

2.表示意志、愿望和决心

>Iwillneverdothatagain.

3.表示估计或猜想

>Itwouldbeabouttenwhenhelefthome.

4.补充说明

a.wouldliketodo=wantto想要，为固定搭配

b.Wouldyoulike…？表示肯定含义的请求劝说时，疑问句中一般用some,而不是any

c.否定结拓中用wont一般不用wouldift,woiftyou是一种委婉语气。

>Won'tyousitdown?

★真题试炼*

46.一Don'tusemycomputerplease.

一Sorry!Idoitagain.

A.can'tB.mustnotC.won'tD.should

47.一Remembertocallmewhenyouarrive,Mike.

—I,mum.

A.mustB.canC.willD.should

48.一Ioftenseethesigninschools.Whatdoesitmean?

一Studentsbringmobilephonestoschool.

N@

MOBILEPHONES!

A.needn'tB.can'tC.couldn'tD.wouldn't

49.一Don'tfeedtheanimalsanymore,kids!Ifsharmfultothem.

一Sorry,sir.We.

A.can'tB.mustn'tC.won'tD.needn't

50.Accordingtothetrafficlaw,childrenunder12ridebicyclesontheroad.

A.won'tB.wouldn'tC.needn'tD.mustn't

51.MotherhadahardtimegettingHelenupinthemorning.Shecalledandcalled,butHelenwakeup.

A.wouldn'tB.mustn'tC.needn'tD.shouldn't

52.一IthoughtyoutoldAmywhatwouldhappenifshedidn'tfollowtherules.

一Idid.ButshejustlistentomenomatterwhatItoldher.

A.mustn'tB.shouldn'tC.couldn'tD.wouldn't

53.MotherhadahardtimegettingHelenupinthemorning.Shecalledandcalled,butHelen___wakeup.

A.wouldn'tB.mustn'tC.needn'tD.shouldn't

54.youliketogotoschoolwithme?

A.CanB.AreC.WouldD.Does

55.-Wouldyouliketodrink,Lucy?

一Thanks.Acupofgreentea,please.

A.somethingB.anythingC.everythingD.nothing

模块七wouldrather/hadbetter用法分述

1.wouldratherdo宁愿否定:

在做两者比较用than

wouldratherdoAthandoB=woulddoAratherthandoB

>IwouldratherwatchTVthangotoseethefilm.

=ITVtotoseethefilm,(prefer)

=ITVratherthantoseethefilm,(prefer)

如果than后面的动词与前面的一样，则可以省略：

>Iwouldratherworkonafarmthaninafactory.

如果than后面是句子，要加that引导的从句：

>Iwouldratherloseadozencherrytreesthanthatyoushouldtellmeonelie.

2.hadbetterdo最好否定：

>我们最好在冬天的时候多吃多睡来储存能量。

Wehadbettertosaveenergyinwinter.

★真题试炼*

56.-You'dbetterearly.Itisgoodforyourhealth.

一Thanks.Tildoasyousay.

A.togetupB.gettingupC.getupD.gotup

57.Heisjustakid.We'dbettertoostrictwithhim.

A.nottobeB.notbeC.benotD.benotto

58.—rdliketobuysomeMagicNovels.

一Youhadbetterthekindofbooks.Thestoriesinthemarefarfromreallife.

A.readB.notreadC.countD.notcount

59.BoblikeseatingsweetsnackswhileTV.Ithinkhe'dbetterthehabit.

A.towatch;giveupB.watching;giveup

C.watching;togiveupD.towatch;togiveup

60.You'dbettertoomuchtimeplayingcomputergames.

A.notspendB.nottospendC.notspentD.notspending

攻略04情态动词（七大题型总梳理）

模块导航

・模块一can/could/beableto用法分述。

,模块二may/might用法分述。

,模块三must/haveto用法分述。

・模块四should/oughtto用法分述。

,模块五need用法分述。

・模块六will/would用法分述。

,模块七wouldrather/hadbetter用法分述。

模块一、can/could/beableto用法分述O

4.can/could的基本形式和用法：

could是can的过去式，或作为委婉语

e.用于请求或允许，意为“能……”

>—Could/CanIhavethetelevisionon?

-Yes,youcan./No,youcan't.

f.在疑问句和否定句中表示推测，意为“可能……吗？”、“不可能”

>他可能是坏人吗？他不可能是坏人。

Can/Couldhebeabadguy?No,hecan't/couldn'tbeabadguy.

g.用于陈述句，表示事情发生的“理论上的可能性”，意为“会”

>事故总会发生。

Accidentscanhappen.

h.表示能力，意为“能够”

>Hecouldn'tspeakEnglishwhenhewasyoung.

could作为can的过去时/委婉语，请打勾

过去时委婉语

表请求或允许q

表推测q

表可能性

表能力q

5.can/could与beableto的差别：

c.表示能力时，can表示现在、could表示过去；beableto可以用于任何时态，也可以前

加情态动词或助动词，如：willbeableto,havebeenableto,shouldbeableto

d.用于过去时中，could表示“有能力做”而“并不一定做成”；若是“实际得以做成某事”，只

能用was/wereableto=managetodosth.

＞司机得以逃生，其他的乘客没有逃出来。

Thedriverwasabletoescape,butthepassengersfailedtodoso.

Ms.Wangcouldsingwellwhenshewasyoung.

Iwasabletopasstheexamination.我通过了考试.（不仅有能力，而且实际上做到了.相当于

Isucceededinpassingtheexamination.）

Icouldpasstheexamination.我当时有能力通过考试.（有能力，但实际上不一定做得到）

can/could与beableto差别总结

can/couldbeableto

表请求或允许qX

表推测qX

表可能性qX

表能力qq

时态现在/过去任何时态

用于过去时中含义有能力但不一定做成实际得以做成

6.can/could的惯用语：

f.cannothelpdoingsth•情不自禁做某事

>我情不自禁地笑了。

Icannothelplaughing.

g.cannothelp/choosebutdosth.不得不,只能做某事

>我不得不告诉她真相。

Icannothelp/choosebuttellherthetruth.

h.cannot...too+adj./adv.无论怎样都不为过，越...越好

A你越小心越好。

Youcannotbetoocareful.

i.cannot...without没有...就不能

>Onecannotsucceedwithoutperseverance.

没有坚持就不能成功。

j.couldnot+比较级=最高级

>—Goforapicnicthisweekend,OK?

—Icouldn'tagreemore.

我非常同意。

★真题试炼*

1.Youmaynotbeabletocontrolallthethingsthathappentoyou,butyoudecidenottobereducedby

them.

A.shouldB.mustC.needD.can

2.Thevolunteerspokeasclearlyasshetomakethevisitorsunderstandher.

A.possibleB.canC.couldD.areable

3.——Look,Sarah,there'sarednotebookonthedesk.Whoseisit?

—ItbeTom'sashisnotebookisblue.ItbeLily'sashernameisonthecover.

A.mustn?t;mustB.mustn't;canC.can?t;mustD.can9t*;may

4.ItbeTomthatparkedthecarhere,asheistheonlyonewithoutacar.

A.mayB.can'tC.mustn'tD.shouldn't

5.—Mom,couldIwatchTVnow?

——No,you..Youmustfinishyourhomeworkfirst.

A.can'tB.canC.needn'tD.need

6.-Thereisanewartmuseuminourcity.Youmissit.

一Thankyou.Iwon't.

A.can'tB.mustC.needn'tD.mustn't

7.一Mom,duringyourbusinesstrip,mustIwatertheflowerseveryday?

——No,you,Youcanwateritonceaweek.

A.mustn'tB.needn'tC.can'tD.couldn't

8.youhelpme?Ican'tworkouttheproblem.

——Sure.

A.CouldB.NeedC.ShouldD.May

9.Thepublicsigninthelibrarymeanspeoplesmokethere.

A.couldn'tB.couldC.mustn'tD.must

10.yougivemeahand?Ican'topenthisbottle.

——Noproblem.

A.ShouldB.MustC.CouldD.Need

参考答案:

1.D

【详解】句意：你可能无法控制发生在你身上的所有事情，但你可以决定不被它们所左右。

考查动词辨析。should应该;must必须;need需要;can可以。根据“butyou...decidenottobereducedbythem.^^

可知，此处强调能力，故选D。

2.C

【详解】句意：这位志愿者尽可能地清晰地说话，以便让来访者明白她的意思。

考查固定搭配。possible可能的；can可以；could可以，can的过去式；areable能够，要与to连用。根据

“Thevolunteerspokeasclearlyasshe...”可知，as…assb.can意为“尽可能“，是固定句式；再由句中动词

“spoke”可知，句子时态为一般过去时，故can要用could。故选C。

3.C

【详解】句意：——看，Sarah,桌上有一个红色的笔记本。这是谁的？——不可能是汤姆的，因为他的笔

记本是蓝色的。肯定是莉莉的，因为封面上有她的名字。

考查情态动词。mustn't禁止；must必须；can可能；can't不可能；may可能。根据“ashisnotebookisblue”

可知，红色笔记本不可能是汤姆的，第一空can't符合句意；再者根据"ashernameisonthecover”可知，笔

记本封面上有莉莉的名字，因此肯定是莉莉的，must符合句意。故选C。

4.B

【详解】句意：不可能是汤姆把车停在这儿的，因为只有他没有车。

考查情态动词的用法。may可能;can't不可能;mustn't禁止；shouldn't不应该。根据“heistheonlyonewithout

acar”可知，不可能是汤姆把车停在这里，表示有把握的否定推测用can't。故选B。

5.A

【详解】句意：——妈妈，我现在可以看电视了吗？——不，你不能。你必须先完成作业。

考查情态动词。can't不能；can能；needn't不需要;need需要。根据“couldIwatchTVnow...”可知，could

开头的一般疑问句否定回答用cant故选A。

6.A

【详解】句意：——我们城市有一座新的美术馆。你不会错过的。——谢谢你。我不会。

考查情态动词。can't不能；must必须；needn't不必；mustn't禁止。根据“You...missit”可知是建议对方不

能错过，用情态动词can't。故选A。

7.B

【详解】句意：——妈妈，在您出差期间，我必须每天给花浇水吗？—不，你不必。你可以一周浇一次

水。

考查情态动词。mustn't禁止;needn't不必；can't不能；couldn't不能,can't的过去式。以"mustl”开头的

一般疑问句，否定回答用No,youneedn't/don'thaveto.故选B。

8.A

【详解】句意：——你可以帮我吗？我解决不了这个问题。——当然。

考查情态动词。could可以；need需要；should应该；may可能。根据“youhelpme”可知此处是结构Could

you...“你可以...吗”，表示委婉语气。故选A。

9.C

【详解】句意：图书馆的这个公共标志表示禁止人们在那里吸烟。

考查情态动词。couldn,t不能；could能；mustn't禁止；must必须。根据常识可知，图书馆中标志是禁止

吸烟，用mustn't符合句意。故选C。

10.C

【详解】句意：——你能帮我一下吗？我打不开这个瓶子。——没问题。

考查情态动词。Should应该；Must必须；Could能；Need需要。此处表示请求，所以应用Could表达一种

委婉语气。故选C。

模块二may/might用法分述

3.may/might的基本形式和用法：

might是may的过去式，亦可作委婉语

d.表示请求或允许，意为“可以……”

>—MayIsmokehere?

—Yes,youmay/can.

—No,youcan't/mustn't.

e.表示对事实的不太确定的推测，意为“可能”

>Thegreatestfoolmayaskmorethanthewisestmancananswer.

愚人之问也可能让智者无言以对。

f.may放在句首,表示祝愿

>场景连线：

MayGodblessyou!*****^^^^ongrandpa9sbirthday

MayyousucceedinyourcareeF?^^^――onthegraduationceremony

Mayweneverforgeteachother!ontheweddingceremony

Mayyoulivelongandprosperthemid-termexam

MayyouloveforeverandhavealovelybabysooHS-^onthefarewelldinner

Maygoodfortunefindyouthisyear!duringtheSpringFestival

4.may/might的惯用语：

d.maywelldo理所当然，有足够的理由=havegoodreasonto

>我有足够理由不去上学。

Imaywellnotgotoschool.

e.may/mightaswelldo最好

>你最好呆在家里。

Youmay/mightaswellstayathome.

f.may/mightaswelldoAasdoB与其做B不如做A

>Onemayaswellnotknowathingatallasknowitbutimperfectly.

与其一知半解，不如全然不知。

★真题试炼*

11.——Who'sgoingtogiveusaspeechnextFridayafternoon?

-I'mnotsure.ItbeMr.Brown,thenewforeignteacherfromFrance.

A.mustB.mayC.willD.can

12.一Doyouhaveanyplansforthecomingsummerholiday?

-I'mnotsure.IgotoQingdao.

A.shouldB.mustC.canD.may

13.一Sam,whatpresentwillyougiveyourmotherforhercomingbirthday?

-Ihaven'tdecidedyet.Imakeherabirthdaycakebymyself.

A.mustB.mayC.wouldD.should

14.WiththerapiddevelopmentofAI,manypeopleworrythattheylosetheirjobsoneday.

A.mayB.shouldC.mustD.can

15.——MustIfinishExercise1now?

一No,you.Youdoitafterschool.

A.needn't;mayB.mustn't;mayC.mustn't;mustD.mustn,t;can

16.一Whereareyo