高中英语情态动词讲解与练习(含答案)

46-高中英语情态动词讲解与练习(含答案)高中英语语法之情态动词（一）情态动词的定义

：情态动词表示说话人对某一动作或状态的态度。

（二）情态动词的特点

：1）有一定词义；2）不受主语人称和数的变化影响；3）与主要动词的原形（或称不带to的不定式）一起构成谓语（除ought

to作固定词组看待）。

情态动词无人称和数的变化,情态动词后面跟的动词需用原形,否定式构成是在情态动词后面加"not"。个别情态动词有现在式和过去式两种形式,过去式用来表达更加客气,委婉的语气,时态性不强,可用于过去，现在或将来。情态动词属非及物动词，故没有被动语态。Hecouldbeheresoon.他很快就来。Wecan'tcarrytheheavybox.我们搬不动那箱子。I'msorryIcan'thelpyou.对不起，我帮不上你。基本助动词与情态助动词最主要的区别之一是，基本助动词本身没有词义，而情态助动词则有自己的词义，能表示说话人对有关动作或状态的看法，或表示主观设想：Whathaveyoubeendoingsince?（构成完成进行体，本身无词义）IamafraidImustbegoing.（一定要）Youmayhavereadsomeaccountofthematter.（或许已经）除此之外，情态助动词还有如下词法和句法特征：1）除ought和used以外，其他情态动词后面只能接不带to的不定式。如果我们把oughtto和usedto看做是固定词组的话，那么，所有情态动词无一例外地只能接不带to的不定式：Weusedtogrowbeautifulroses.Iaskedifhewouldcomeandrepairmytelevisionset.2）情态助动词在限定动词词组总是位居第一：Theyneednothavebeenpunishedsoseverely.3）情态助动词用于第三人称单数现在时的时候，没有词形变化，即其词尾无-s形式：Shedarenotsaywhatshethinks.4）情态动词没有非限定形式，即没有不定式和分词形式，也没有相应的动名词：Still,sheneedn'thaverunaway.5）情态助动词的“时”的形式并不是时间区别的主要标志。在不少场合，情态助动词的现在时和过去时形式都可以表示现在、过去或将来时间：WouldyoumindverymuchifIaskyoutodosomething?Shetoldhimheoughtnottohavedoneit.6）情态助动词之间是相互排斥的，即在一个限定动词词组中只能出现一个情态助动词，但有时却可以与have和be基本助动词连用：Youshouldhavewashedthewound.Well,youshouldn'tbereadinganovel.（三）情态动词有四类：①只做情态动词：must,can(could),may(might),oughtto②可做情态动词又可做实义动词：need,dare③可做情态动词又可做助动词：shall(should),will(would)④具有情态动词特征：have(had,has)to,usedto⑤情态动词表猜测（四）情态动词的基本用法

1.

can

(could)

1）表示能力，could主要指过去时间。

Two

eyes

can

see

more

than

one.

两只眼比一只眼看得清。Could

the

girl

read

before

she

went

to

school?

这女孩上学前能识字吗？2）表示可能（理论上或是逻辑判断上）。The

temperature

can

fall

to

–60℃,

that

is

60气温可降至—60℃，也就是零下He

can´t

(couldn´t)

have

enough

money

for

a

new

car.

他不可能有足够的钱买新车。You

mustn´t

smoke

while

you´re

walking

around

in

the

wood.

You

could

start

a

fire.

在林子里走时勿吸烟，那样可能会引起火灾。3）表示允许。Can

I

have

a

look

at

your

new

pen?

我可以看一看你的新钢笔吗？He

asked

whether

he

could

take

the

book

out

of

the

reading—room.

他问他可不可以把书带出阅览室。4）表惊异、怀疑、不相信等态度。主要用于否定句、疑问句或感叹句中。Where

can

(could)

they

have

gone

to?

他们会去哪儿了呢？He

can´t

(couldn´t)

be

over

sixty.

他不可能超过六十岁。How

can

you

be

so

careless?

你怎么这么粗心？5）比较委婉客气地提出问题或陈述看法。Can

(Could)

you

lend

me

a

hand?

帮我一把好吗？I´m

afraid

we

couldn´t

give

you

an

answer

today.

恐怕我们今天不能给你答复。2.

may

(might)

1）表允许，might可以指过去时间，也可指现在时间，语气更委婉。You

may

take

whatever

you

like.

你喜欢什么就拿什么。He

told

me

that

I

might

smoke

in

the

room.

他告诉我可以在房间里抽烟。May

(Might)

I

ask

for

a

photo

of

your

baby?

我可以要一张你宝宝的照片吗？

在回答以may引起的问句时，多避免用这个词，而用其它方式，如Yes,

please.

/

Certainly.

/

Please

don´t

./

You´d

better

not.

/

No,

you

mustn´t.等，以免显得太严峻或不客气。

2）表可能（事实上）。可以指过去时间，也可以指现在时间，但语气更加不肯定。

He

may

be

at

home.

他可能在家。

She

may

not

know

about

it.

她可能不知道这件事。

He

was

afraid

they

might

not

agree

with

him.

他担心他们可能不同意他的意见。They

might

be

having

a

meeting,

but

I´m

not

sure.

他们有可能在开会，不过我不肯定。

3.

must1）表示义务。意为“必须”（主观意志）。We

must

do

everything

step

by

step.

我们一切都必须循序渐进地做。You

mustn´t

talk

to

her

like

that.

你不可能那样对她说话。

--Must

we

hand

in

our

exercise—books

now?

我们现在就要交练习本吗？

--No,

you

needn´t.

/

No,

you

don´t

have

to.

不必。（这种情况下，一般不用mustn´t）

2）表示揣测。意为“想必、准是、一定”等，只用于肯定句。He

must

be

ill.

He

looks

so

pale.

他准是病了。他的脸色苍白。

She´s

wearing

a

diamond

necklace.

She

must

have

a

lot

of

money.

她戴着钻石项链，一定很有钱。4.

shall

1）表征询意见，用于第一、第三人称疑问句。

Shall

I

get

you

some

tea?

我给你点茶好吗？Shall

the

boy

wait

outside?

让那男孩在外面等吗？

What

shall

we

do

this

evening?

我们今晚做什么？2）表说话人的意愿，有“命令、允诺、警告、决心”等意思，用于第二、第三人称陈述句。

You

shall

do

as

I

say.

按我说的做。（命令）

You

shall

have

my

answer

tomorrow.

你明天可以得到我的答复。（允诺）

He

shall

be

sorry

for

it

one

day,

I

tell

you.

有一天他会后悔的，我告诉你。（警告）

Nothing

shall

stop

us

from

carrying

out

the

plan.

什么也不能阻止我们执行这项计划（决心）

5.

will

1）表意愿，用于各种人称陈述句。

I

will

do

anything

for

you.

我愿为你做任何事。

None

is

so

blind

as

those

who

won´t

see.

不愿看的人眼最瞎。

If

you

will

read

the

book,

I´ll

lend

it

to

you.

如果你愿意读这本书，我会把它借给你。

2）表请求，用于疑问句。

Will

you

close

the

window?

It´s

a

bit

cold.

请你把窗户关上好吗？有点冷。

Won´t

you

drink

some

more

coffee?

再来一点咖啡好吗？

3）表示某种倾向或习惯性动作。

Fish

will

die

out

of

water.

鱼离开水就不能活。

The

door

won´t

open.

这门打不开。

The

boy

will

sit

there

hour

after

hour

looking

at

the

traffic

go

by.

那男孩常常坐在那里好几个钟点，看着车辆行人通过。

6.

should

1）表义务。意为“应该”（某件事宜于做），用于各种人称。You

should

be

polite

to

your

teachers.

你对老师应该有礼貌。

You

shouldn´t

waste

any

time.

你不应该浪费时间。

2）表推测，意为“想必一定、照说应该、估计”等。

The

film

should

be

very

good

as

it

is

starring

first—class

actors.

这部新电影是一流演员主演的，估计拍得很好。

They

should

be

home

by

now.

照说他们现在应当已经到家了。

7.would

1）表意愿。

They

would

not

let

him

in

because

he

was

poorly

dressed.

他们不让他进去因为他衣着旧。

I

said

I

would

do

anything

for

you.

我说过我愿意为你做任何事。

2）表委婉地提出请求、建议或看法。

Would

you

like

another

glass

of

beer?

再来杯啤酒好吗？

Would

you

mind

cleaning

the

window?

请把窗户擦一下好吗？They

wouldn´t

have

anything

against

it.

他们不会有什么反对意见。

3）表过去反复发生的动作或过去的一种倾向。

Every

time

she

was

in

trouble,

she

would

go

to

him

for

help.

她每遇到麻烦都会向她求助。他告诉我盒子打不开了。8.

ought

to1）表义务，意为“应该”（因责任、义务等该做），口气比should稍重。

You

are

his

father.

You

ought

to

take

care

of

him.

你是他父亲，应当管他。

You

oughtn´t

to

smoke

so

much.

你不应该抽这么多烟。2）表推测，暗含很大的可能，语气较弱。

Han

Mei

ought

to

know

his

telephone

number.

韩梅该知道他的电话号码。

There´s

a

fine

sunset;

it

ought

to

be

a

fine

day

tomorrow.

今天有晚霞，明天应该是个好天。9.

used

to

表示过去的习惯动作或状态，现在不复发生或存在。疑问式和否定式有两种。He

used

to

live

in

the

countryside,

but

now

he

lives

in

the

city.他过去住在乡下，现在住在城里。

There

used

to

be

a

building

at

the

street

corner,

but

it

has

been

pulled

down.

街道拐角处过去有座楼房，现在拆了。

I

usedn´t

(didn´t

use)

to

smoke.

我过去不抽烟。

Used

you

(Did

you

use)

to

go

to

school

on

foot?

你过去常步行去学校吗？（五）其他用法首先它是动词，而且不同于行为动词，行为动词表示的是可以通过行为来表达的动作（如写，读，跑），而情态动词只是表达的一种想法（如能，也许，敢）。用法是：情态动词+行为动词原形例句：IcanreadthissentenceinEnglish.我能用英语读这句话。情态动词是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语,只能和其他动词原形构成谓语。Wecanbethereontimetomorrow.我们明天能按时去那儿。MayIhaveyourname?我能知道你的名字吗？Shallwebeginnow?我们现在就开始吗？Youmustobeytheschoolrules.你必须遵守校规。情态动词数量不多,但用途广泛,主要有下列:can(could),may(might),must,need,oughtto,dare(dared),shall(should),will(would),have(to),hadbetter.情态动词还有一个很重要的用法，即情态动词表推测——情态动词表推测的用法小结（一）情态动词表推测的三种句式1.在肯定句中一般用must(一定)，may（可能），might/could（也许，或许）。（1）Hemust/may/mightknowtheanswertothisquestion?他一定/可能/也许知道这个问题的答案。（2）Itiscoldintheroom.Theymusthaveturnedofftheheating.屋里很冷，他们肯定把暖气关了。2.否定句中用can’t/couldn’t(不可能),maynot/mightnot(可能不)。（1）Itcan’t/couldn’tbetheheadmaster.HehasgonetoAmerica.这不可能是校长，他去美国了。（2）Hemaynot/mightnotknowthescientist.他也许不认识那位科学家。3.疑问句中用can/could(能……?)。（1）Couldhehavefinishedthetask?他可能把任务完成了吗？（2）Canhebeathomenow?他现在能在家吗？注：以上三种句式中情态动词的语气按程度都是依次递减的。Might,could并非may,can的过去式，而表示语气较为委婉或可能性较小。（二）情态动词表推测的三种时态1.对将来情况的推测，用“情态动词+动词原形”。（1）Shemust/may/might/couldarrivebefore5.5:00前她一定/可能/也许到。（2）Shemust/may/might/couldwalkmilesandmilesamongthehillswithoutmeetinganyone.她一定/可能/也许会在山里一连走好几英里而遇不到一个人。2.对现在或一般情况的推测，用“情态动词+be”，“情态动词+bedoing”或“情态动词+动词原形”。（1）Hemust/may/might/couldbelisteningtotheradionow.他一定/可能/也许正在听收音机。（2）Hecan’t(couldn’t)/may(might)notbeathomeatthistime.这个时候他不可能/可能不在家。（3）Mr.Bushisontimeforeverything.Howcan(could)hebelatefortheopeningceremony?布什先生一向准时，这次开幕式他怎么可能迟到呢？3.对过去情况的推测，用“情态动词+have+过去分词”。（1）Itmust/may/might/couldhaverainedlastnight.Thegroundiswet.地湿了，昨晚肯定/可能/也许下雨了。（2）Thedoorwaslocked.Hecan(could)not/may(might)nothavebeenathome.门锁着，他不可能/可能不在家。（3）Can/Couldhehavegottenthebook？难道他找到书了吗？注：情态动词should/oughtto表推测时，意为“想必会，理应……”但与“have+过去分词”连用时，则又可构成虚拟语气意为“本应该做某事却没做”。例如：（4）It’sseveno’clock.Jackshould/oughttobehereatanymoment.现在七点钟了，杰克理应随时到达。（推测）（5）Sheshould/oughttohaveattendedyourbirthdayparty,butshehadtolookafterhermotherinhospital.（虚拟）她本该出席你的生日晚会的，可是她得在医院照顾她妈妈。（6）Tomshouldnot/oughtnottohavetoldmeyoursecret,buthemeantnoharm.（虚拟）汤姆本不该告诉我你的秘密，可是他并无恶意。（六）功能助动词(auxiliary)主要有两类：基本助动词(primaryauxiliary)和情态助动词(modalauxiliary)。基本助动词有三个：do,have和be；情态助动词基本的有十四个：may,might;can,could;will,would;shall,should;must,need,dare,usedto,oughtto.hadbetter上述两类助动词的共同特征是，在协助主动词构成限定动词词组时，具有作用词的功能：1）构成否定式：Hedidn'tgoandneitherdidshe.Themeetingmightnotstartuntil5o'clock.2）构成疑问式或附加疑问式：Mustyouleaverightnow?YouhavebeenlearningFrenchfor5years,haven'tyou?3）构成修辞倒装：Nowherecanheobtainanyinformationabouthissister.Hardlyhadhearrivedwhenshestartedcomplaining.4）代替限定动词词组：A:Whocansolvethiscrosswordpuzzle?B:Tomcan.A:ShallIwritetohim?B:Yes,do.重点疑难（一）need和dare的用法

need和dare既可用作情态动词，也可用作实义动词。用作情态动词时，主要用于否定句和疑问句。用作实义动词时，可用于各种句式。

1.用作情态动词

--Need

I

come?

--Yes,

you

must.

--我需要来吗？

--需要。

You

needn´t

telephone

him

now.

你现在不必打电话给他。

I

don´t

think

you

need

worry.

我想你不必发愁。She

dare

not

go

out

alone

at

night.

她晚上不敢一个人出去。

How

dare

you

say

I´m

unfair?

你竟敢说我不公平？Not

one

of

them

dared

mention

this.

他们谁也不敢提这件事。

2.用作实义动词

You

don´t

need

to

do

it

yourself.

你不必亲自做这件事。

We

need

to

tell

them

the

news.

我们需要把这消息告诉他们。

The

table

needs

painting

(to

be

painted.).

桌子需要油漆一下。

We

should

dare

to

give

our

own

opinion.

我们要敢于提出自己的观点。

He

did

not

dare

(to)

look

up.

他不敢抬头看。

I

dare

day

he´ll

come

again.

我想他会再来的。

（cI

dare

say…为固定习语）

（二）情态动词后跟完成式和进行式的用法

1.情态动词后跟完成式，表“应当已经……”，“想必已经……”，“本来可以……”等意。

I

should

have

finished

the

work

earlier.

我应当早一点完成这项工作的。He

isn´t

here.

He

must

have

missed

the

train.

他还未到，一定是没赶上火车。

Where

can

(could)

he

have

gone?

他能到那里去了呢？

You

may

(might)

have

read

about

it.

你可能在报上已经读到这件事了。

You

could

(might)

have

been

more

careful.

你本来可以更细心的。

He

needn´t

have

worried

about

it.

他本不必为此事担心。

There

was

a

lot

of

fun

at

yesterday´s

party.

You

ought

to

have

come,

but

why

didn´t

you

昨天的聚会非常有意思。你本应该来，为何不来呢？

2.

情态动词后跟进行式，表示“想必正在……”，“可能正在……”，“应当正在”等意。

It´s

twelve

o´clock.

They

must

be

having

lunch.

现在是十二点。他们一定正在吃饭。

They

may

be

discussing

this

problem.

他们可能正在论讨这个问题。

He

can´t

be

telling

the

truth.

他说的不可能是真话。

She

shouldn´t

be

working

like

that.

She´s

still

so

weak.

她不应当那样干，她身体仍那么虚。

（三）几组词的辨异

1.

can

和be

able

to

1）情态动词can只有两种时态形式，现在式can和过去式could，而be

able

to有多种时态形式。

Mary

can

play

the

piano.

She

has

been

able

to

play

it

since

she

was

5.

玛丽会弹钢琴。她五岁起就会弹了。2）用在过去时中，could经常表示能够做某事，事实上不一定去做，而was∕were

able

to则表示“过去做成了某事”。在否定句中两者可通用。

He

could

swim

across

the

English

Channel.

But

he

didn´t

feel

like

it

that

day.

他能游过英吉利海峡，但那天他不想游。

Yesterday

I

was

able

to

get

home

before

the

heavy

rain.

昨天我在下大雨前赶到了家里。

2.

must和

have

to

must表示主观意志，而have

to表示由于客观因素不得不做某事。must没有过去式，除在间接引语中可用于表示过去时间，在直接引语中表示过去时间应该用had

to代替。I

told

her

that

she

must

give

up

smoking.

我叫她必须戒烟。

We

had

to

get

everything

ready

that

night.

我们那晚得把一切准备就绪。3.

would和used

to

1）used

to表示过去与现在或过去某时与后来的情况有不同，而would只表过去的情况。People

used

to

think

that

the

earth

was

flat.

过去人们认为地球是平的。（现在人们不这么认为。）

She

would

go

out

for

a

walk

in

the

morning

when

she

was

in

the

country.

在乡下时，她总是在早晨去散会儿步。（可能现在仍有散步的习惯。）

2）used

to可表示过去的习惯动作和经常的情况，而would只表示过去的习惯动作。

He

used

to

∕would

smoke

while

writing.

过去他写东西时常抽烟。

She

used

to

be

fat.

她过去很胖

专项练习（一）1.

I

__________

you,

because

I

thought

I

must

be

wrong.

A.

dare

not

ask

B.

dare

not

to

ask

C.

dare

not

asking

D.

dare

to

not

ask

2.

There

__________

some

flowers

in

the

garden.

A.

were

used

to

be

B.

used

to

be

C.

uses

to

be

D.

used

to

be

having

3.

“__________

I

take

it

out?”

“I´m

sorry,

you

__________.”

A.

Could

…couldn´t

B.

Might…might

not

C.

Could…can

D.

May…can´t

4.

You

were

stupid

to

climb

the

tree.

You

__________

hurt

yourself.

A.

may

B.

might

C.

will

D.

might

have

5.

You

__________

those

letters.

Why

didn´t

you

?

A.

should

post

B.

should

have

posted

C.

must

have

posted

D.

ought

to

post.

6.

All

the

lights

are

on,

the

Smiths

__________

up.

A.

must

get

B.

is

getting

C.

must

be

getting

D.

would

get

7.

He

__________

lead

a

horse

to

the

water

but

he

__________

not

make

it

drink.

A.

will…can

B.

may…can

C.

may…dares

D.

dare…can

8.

“Need

we

do

this

job

now?”

“Yes,

__________.”

A.

you

need

B.

you

should

C.

you

must

D.

you

can

9.

__________

to

have

lunch

with

us

today?

A.

Do

you

likes

B.

Would

you

like

C.

Will

you

liked

D.

Have

you

liked

10.

He

said

that

you

__________

watch

TV

all

the

evening

if

you

wished.

A.

may

B.

must

C.

can

D.

might

11.

–Is

John

coming

by

train?

--He

should,

but

he

__________

not.

He

likes

driving

his

car.

A.

must

B.

can

C.

need

D.

may

12.

Peter

__________

come

with

us

tonight,

but

he

isn´t

very

sure

yet.

A.

must

B.

can

C.

may

D.

will

13.

Michael

__________

be

a

policeman,

for

he´s

much

too

short.

A.

needn´t

B.

can´t

C.

shouldn´t

D.

won´t

14.

I

thought

you

__________

be

hungry,

so

I

have

brought

you

some

cakes.

A.

may

B.

might

C.

can

D.

could

15.

I

wonder

how

he

__________

that

to

the

teacher.

A.

dare

to

say

B.

dare

saying

C.

not

dare

say

D.

dared

say

16.

Come

on!

We

__________

hurry

because

there

isn´t

much

time

left.

A.

mayB.

must

C.

can

D.

need

17.

Amy

did

best

in

the

English

test.

She

__________

hard

last

week.

A.

must

have

working

B.

should

have

worked

C.

should

work

D.

must

work

18.

The

fire

spread

through

the

hotel

very

quickly

but

everyone

__________

get

out.

A.

had

to

B.

would

C.

could

D.

was

able

to

19.

–--I

stayed

at

a

hotel

while

in

New

York.

Oh,

did

you?

You

__________

with

Barbara.A.

could

have

stayed

B.

could

stay

C.

would

stay

D.

must

have

stayed

20.

It´s

nearly

seven

o´clock.

Jack

__________

be

here

at

any

moment.

A.

must

B.

need

C.

should

D.

can

答案：

1.A2.B3.D4.D5.B6.C7.B8.C9.B10.D11.D12.C13.B14.B15.D16.B17.A18.D19.A20.

专项练习（二）1.Jeanhavekepthispromise.Iwonderwhyhechangedhisidea.A.must B.should C.need D.would2.Janehavecometotheparty,butshenotfindtheexacttime.A.could;could B.might;could C.should;could D.should;would3.Somanymistakesinyourhomework!Youmorecareful.A.maybe B.hadto C.wouldbe D.shouldhavebeen4．Herbrotherbeathomenow,becausehewasseenplayingbasketballinthestadiumjustnow.A.mustn’t B.needn’t C.can’t D.shouldn't5．Ican’tunderstandwhyourbossislate.Hetheearlybus.A.couldmiss B.mayhavemissedC.canhavemissed D.mightmiss6.Shedidn'tanswerthephone,she______asleep.A.maybe B.mustbe C.shouldhavebeen D.musthavebeen7．Thelittlegirl’seyeswerered.She______.A.maycry B.mustcry C.mustbecried D.musthavebeencrying8．He______hissuppernow,forthedininghallisstillclosed.A.can’tbehaving B.needn’tbehavingC.mustn’tbehavingD.shouldn'tbehaving9．Iparkedmybikebehindthebuilding,butnowitisgone.It________.A.maybestolenB.mustbestolenC.musthavebeenstolenD.musthavestolen10.______Mr.Black_______gotoworkbyferrybeforethebridgewasbuilt?A.Did;usedto B.Use;to C.Did;useto D.Does;useto11.Thehotelisonlyastone’sthrowaway,you______takeabus.A.neednotto B.notneedto C.don'tneed D.neednot12.Iambusynow,_______mybrotherdoitforyou?A.Will B.Shall C.Must D.May13.Youneedn’tdoitrightnow,needyou?YesIamafraidI______.A.need B.needn’t C.must D.mustn’t14.MyEnglish-Chinesedictionaryhasdisappeared.Who_____havetakenit?(2003年上海春季高考)A.should B.must C.could D.would15.Theroomissodirty._______wecleanit?Ofcourse.(2003年北京春季高考)A．Will B.Shall C.Would D.Do16.Ifyouhavesomethingimportanttodo,you______wasteanytime.A.needn’t B.mustn’t C.maynot D.won’t17.Ifyouwanttoborrowafootballafterschool,yourstudentcard______here.A.hastoleave B.mustleave C.hastobeleft D.mustbeleft18.“Didyouscoldhimforhiscarelessness?”“Yes,but_____it”A.I’drathernotdo B.I’drathernothavedoneC.Ishouldn’tdo D.I’dbetternotdo19.“Don’tgetneartoit.Itistoodangerous!”“_______”.A.Yes,Iwon’t B.No,Idon’t C.No,Ican’t D.No,Iwon’t20.Hemustbeintheclassroom,_______he?A.mustn’t B.can’t C.isn’t D.can21.He________beinthegarden.Hemustbeintheroom.A.can’t B.mustn’t C.willnot D.maynot22.“Doyouhavetoleavenow?”“Iamverysorry,butIreally______.”A.can’t B.have C.should D.must23.“Let’sgotothelibrary,shallwe?”“_________?”A.No,Ican’t B.Yes,Iwill C.Yes,thankyou D.No,we’dbetternot24.“CanItakeitaway?” “You______betternot.”A.should B.could C.would D.had25.You_______havebroughtyourcamera.Theyallhadtheirswiththem.A.couldn’t B.needn’t C.wouldn’t D.mustn’t26.Seewhoisthere!______itbeMay?A.May B.Must C.Can D.Will27.John______beabasketballplayer.Heismuchtooshort.A.may B.mustn’t C.can’t D.should28.TheChineseteacherlookssopale.She______beill.A.must B.mustn’t C.can D.need29.Something______tosaveourearth.Doyouthinkso?A.cando B.mustdo C.hastodo D.mustbedone30.Lookatwhatyouhavedone!You______bemorecareful.A.ought B.can C.would D.should专项练习（三）1.—HasLiLinstarted?Hesaidhewouldjoinintheparty.

—He______.Heisamanofkeepinghisword.

A.couldhaveleft

B.musthaveleft

C.can’tcome

D.won’tbecoming

2.—MayIparkmycarhere?—No,you______.Nocarisallowedtoparkhere.

A.maynot

B.needn’t

C.mustn’t

D.daren’t

3.—Excuseme,couldyoutellmewheretheYajiaSupermarketis?

—It’stwoblocksstraightahead.You______missit.

A.mustn’t

B.can’t

C.needn’t

D.shouldn’t

4.—IsawMr.SunatTongyuStationthismorning.—You______.He’sstillonholidayinHawaii.

A.couldn’thave

B.mustn’thave

C.shouldn’t

D.needn’t

5.—HowaboutpayingavisittoDr.Wang,ourformerChineseteacher?

—Goodidea.Iwille-mailhimtodaysothathe______know______toexpectus.

A.shall;why

B.could;whenC.would;what

D.will;how

6.Everythinghastwosides.Beautifulsongs,sometimes,______bejustnoisetoothers.

A.must

B.may

C.should

D.could

7.Someone______myumbrella.Ifounditwetyesterday.

A.mustbeusing

B.musthaveused

C.mustuse

D.musthavebeenusing

8.—Howdangerousitwas!—Yes,butforthepasser-by’squickaction,thegirl______.

A.wasdrowned

B.couldhavebeendrownedC.haddrowned

D.shouldbedrowned

9.You____scoldsuchapupilwhoalwayskeepssilentsoseriouslythatyou_____hurthim.

A.should;can

B.may;will

C.mustn’t;may

D.can’t;must

10.—WhydoesAliceknowsomuchaboutAngkorWat?—She______havebeenthere,or...

A.must

B.oughtn’tto

C.may

D.can’t

11.—Youmaylaugh,butI’vebeenthinkingofbecomingavegetarian.—Oh,you______becrazy.Youwillbehungryallthetime.

A.must

B.may

C.will

D.need

12.—What’sthematterwithyou?

—Oh,I’mnotfeelingwellinthestomach.I______somuchfriedfishjustnow.

A.shouldn’teat

B.mustn’thaveeaten

C.shouldn’thaveeaten

D.mustn’teat

13.—______hehavebeenchosenascaptainofthefootballteam?—Yes,he______.

A.Can;musthave

B.Must;musthave

C.Can;must

D.Must;must

14.Mr.Zhang______inShanghaitomorrowmorning.

A.canhavearrived

B.willhavearrived

C.mayhavearrived

D.musthavearrived

15.MissWangstartedat8o’clock,andshe______betherenow.

A.should

B.can

C.can’t

D.need

16.—ItmustbeMr.Liwhodidit.—No,it______beMr.Li.

A.mustn’t

B.wouldn’t

C.can’t

D.may17.You______finishreadingthebookassoonaspossible.

A.may

B.can

C.need

D.should

18.—Needyougotoworknow?—Yes,I______.

A.must

B.need

C.can

D.dare

19.Yourtrousersaredirty.______themforyou?

A.ShallIwash

B.WillIwashC.AmIgoingtowash

D.AmIwashing

20.Youarelateforschooltoday.You______toschoolearlier.

A.oughttocome

B.shouldhavecome

C.oughthavecome

D.shouldcome

21.WemustlearnfromLeiFeng,______we?

A.may

B.can’t

C.don’t

D.needn’t

22.Shemustbehungry,______she?

A.isn’t

B.needn’t

C.doesn’t

Dwon’t

23.Heoughttocomehereearly,______he?

A.would

B.should

C.didn’t

D.shouldn’t

24.Youusedtosmoke,______you?

A.usedto

B.don’t

C.didn’t

D.shouldn’t25.Youought______forwhatyouhaven’tdone.

A.nottobepunished

B.notbepunished

C.tonotpunished

D.tonotbepunished

26.______youpleasetellmethewaytothepostoffice?

A.Must

B.Need

C.Would

D.Should

27.I’msurehe______havethecomputersoonerorlater.

A.shall

B.can

C.must

D.would

28.Itisimportantthatwe______learnhowtodrive.

A.haveto

B.should

C.need

D.shall

专项练习（四）1.Ididn’tseeherinthemeetingroomthismorning.She_____atthemeeting.

A.mustn’thavespokenB.shouldn’thavespoken

C.needn’thavespokenD.couldn’thavespoken

2.Oneought_____forwhatonehasn’tdone.

A.nottobepunishedB.tonotbepunished

C.tonotpunishedD.notbepunished

3.Ifyoureallywantyourselftobeingoodhealth,youmust___always___somuch.

A.not;besmokingB.not;havesmoked

C.not;tosmokeD.benot;smoking

4.Withsomuchworkonhand,you_____toseethegamelastnight.

A.mustn’tgoB.shouldn’tgoC.couldn’thavegoneD.shouldn’thavegone

5.MostofthestudentsfeltratherdisappointedattheEnglishparty.Theysaythatit______betterorganized.

A.hadbeenB.hadtobeC.musthavebeenD.couldhavebeen

6.I’msurprisedthathe_____intheexam.

A.shouldfailB.wouldhavefailedC.mayhavefailedD.shouldhavefailed

7.Thelittlegirl_____therealone.

A.notdaregoB.daresnotgoC.darenotgoD.darenottogo

8.“Mustwedoitnow?”“No,you_____.”

A.won’tB.needn’tC.can’tD.don’t

9.Hesaidhewouldrathernot_____itrightnow.

A.doingB.todoC.doD.tobedoing

10.You_____tothemeetingthisafternoonifyouhavesomethingimportanttodo.

A.needn’ttocomeB.don’tneedcomeC.don’tneedcomingD.needn’tcome

11.Putonmoreclothes.You_____befeelingcoldwithonlyashirton.

A.canB.couldC.wouldD.must

12.I_____playfootballthanbaseball.

A.wouldratherB.hadbetterC.likebetterD.prefer

13.Ithoughtyou_____likesomethingtoread,soIhavebroughtyousomebooks.

A.mayB.mightC.couldD.must

14.Therewasplentyoftimes.She_____.

A.mustn’thavehurriedB.couldn’thavehurried

C.mustnothurryD.needn’thavehurried

15.Theplantisdead.I_____itmorewater.

A.willgiveB.wouldhavegivenC.mustgiveD.shouldhavegiven

16.You_____returnthebooknow.Youcankeepittillnextweekifyoulike.

A.can’tB.mustn’tC.needn’tD.maynot

17.It’sstillearly,you_____.

A.mustn’thurryB.wouldn’thurryC.maynothurryD.don’thavetohurry

18.Pleaseopenthewindow,_____?

A.can’tyouB.aren’tyouC.doyouD.willyou

19.We_____forherbecauseshenevercame.

A.mustn’thavewaitedB.shouldn’thavewaited

C.mustn’twaitD.needn’twait

20.—MayIstophere?—No,you_____.

A.mustn’tB.mightnotC.needn’tD.won’t

21.It’safineday.Let’sgofishing,_____.

A.won’tweB.willweC.don’tweD.shallwe

22.Ididn’tseeherinthemeetingroomthismorning.She_____atthemeeting.

A.mustn’thavespokenB.shouldn’thavespoken

C.needn’thavespokenD.couldn’thavespoken

23.—Pleasedon’tmakeanoise.—_____.I’llbeasquietasamouse.

A.Yes,Iwon’tB.No,Iwon’tC.No,IwillD.Yes,Iwill

24.Theyoungmanhasmadesomuchnoisethathe_____nothavebeenallowedtoattendtheconcert.

A.couldB.mustC.wouldD.should

25.—WhereisJohn?—He_____inthelibrary.

A.shouldbeB.mustbeC.canbeD.musthavebeen

26.Sincetheroadiswetthismorning,_____lastnight.

A.itmustrainB.itmustberaining

C.itmusthaverainedD.itmusthavebeenrain

27.—Willyourbrotherstayhometonight?

—I’mnotquitesure.He_____tothecinematonight.

A.mustgoB.cangoC.maygoD.maybegoing

28.She’salreadytwohourslate.What______toher?

A.canhavehappenedB.mayhavehappened

C.shouldhavehappenedD.musthappen

29.Youmustbeawriter,_____?

A.mustn’tyouB.areyouC.mustyouD.aren’tyou

30.Igotupearlythatmorning,butI_____sobecauseIhadnoworktodo.

A.mustn’thavedoneB.didn’tneedtodo

C.needn’thavedoneD.can’thavedone

31.He_____havecomehereyesterday,buthedidn’t.

A.couldB.shouldC.oughttoD.alltheabove

32.Imissedthelastbus,soI_____gohomeonfoot.

A.mustB.havetoC.mayD.hadto

33.Heoughttowinthefirstprize,_____he?

A.oughtn’tB.shouldn’tC.mustn’tD.bothAandB

34.Everyone_____dohisbestforthemodernizationsofourcountry.

A.canB.mayC.shouldD.might

35.Let’scleanourclassroom,_____?

A.willyouB.don’tweC.shallweD.doyou

36.Letusplaybasketball,______?

A.willyouB.don’tweC.shallweD.doyou

37.Heaskedmeforthisbookmanytimes.Pleasetellhimthathe_____haveittomorrow.

A.mustB.mayC.shallD.bothBandC

38.“Yourphonenumberagain?I_____quitecatchit.”“It’s9568442.”

A.didn’tB.couldn’tC.don’tD.can’t

39.Mother_____usstorieswhenwewerechildren.

A.wasusedtotellB.isusedtotellingC.usedtotellD.usedtotelling

40.Shewouldrather_____moremoneyonbooks_____onclothes.

A.cost…notB.tospare…don’tC.pay…thanD.spend…thanw.w.w.g.k.x.x.c.o.m专项练习（二）1.解析：选B.“should