情态动词讲解教案

高中英语综合演练

【热身阅读】

前期检测

We have only one earth

Dear human being，

Have you ever seen such a notice “A black smelly earth with lots of dirty things on it is crying and struggling.”？1.多糟糕啊！Long，long ago，the earth was healthy and beautiful，and 2.它被茂密的森林和各种各样的植物覆盖。The water in the rivers and lakes and seas was clean and harmless. There were not so many 3.灾害of nature. 4.人与大自然和谐相处,Why has everything changed？Because we human being do a lot of bad things to her. First，We cut down the forests，destroy the grasses，and the water 5.冲走a lot of soil down the rivers into the lakes and seas，making a lot of places 6.洪水泛滥and many people 7.“被”死亡and making her surface ugly. Secondly，we use lots of chemical powder in the wars. we burn plenty of coals，gas in the factories and cars，making much SO2 and CO2 with the heavy smoke 8.在空气中肆虐（传播），so a lot of people suffer from this terrible air pollution，especially in winter. As a result of this，the temperature of the earth is getting higher and higher. It is dangerous for human being，animals and plants to exist. Thirdly，we pour a lot of waste and 9.有毒的water into the rivers，lakes and seas,making all kinds of fishes，plants and birds die.

Now，if we go on doing bad things to the earth，the earth will die. If the earth died，where would we human being go？The earth is our common living place. So it is everyone’s duty to 10.保护our home —— the earth. Do remember：We have only one earth！

Time Is Money

“Time is money.” This saying means that time is very valuable.

But time is more valuable than money. The money we have lost can be gained again, but the time we have wasted cannot be regained. Moreover, sometimes persons can exist without money, but nothing can be done without time, just as no one can live without air.

Despite being so valuable, time is often neglected by men. Since time is an invisible thing, men often waste their time unconsciously. Without anything to do, they may gossip from morning till night.

Man can live only at most to about 100 years. It seems fairly long, but in fact it is rather short. We often say “How quickly time flies!” How many things can a man accomplish in such a short period? Hence we should use the valuable time properly to do our work. We will race with it. We will study and work hard. Never waste a little bit of it.

【情态动词的用法要点】

一．can和could

情态动词用法例句

can/could 表示能力

1．“I don’t think Mike can type.”

“Yes, he can.”

2．I can speak fluent English now , but I couldn’t last

year.

在肯定句中，表示客观

可能性，并不涉及具体某

事会发生，常用来说明人

或事物的特征。要表达具

体某事实际发生的可能

性时，不用can，需用

could，may，might。

1．As a human being, anyone can make a mistake.

2．I’m confident that a solution can be found.

3．He can be very forgetful sometimes.

4．I may stay at home this weekend.（实际可能性）

5．Peter might come to join us.(实际可能性)

6．It will be sunny in the daytime ,but it could rain

tonight.(实际可能性)

表示请求和允许。表示请

求，口语中常用could代

替can，使语气更委婉。

1．Can we turn the air conditioner on?

2．Any police officer can insist on seeing a driver’s

license.

3．In soccer, you can’t touch the ball with your hands.

4．Could you have her call me back when she gets

home, please?

5．I wonder if I could just ask you to sign this.

表示对现在的动作或状态进行主观的猜测，主要用在否定句和疑问句中。1．It can’t be easy caring for a man and a child who are not your own.

2．Can the man over there be our head master?

表示惊异、怀疑、不相信等态度，主要用在否定句、疑问句和感叹句中。1．Can this be an excuse for not giving them help? 2．This can’t be true.

3．How can you be so crazy.

特别说明：

（1）could用来表示请求时，语气委婉，主要用于疑问句，不能用于肯定句，答语应用can（即：could不能用于现在时态的简略答语中）。如：

——Could I use your dictionary?

——Yes, you can.(否定回答可用：No, I’m afraid not.)

(2)can和be able to辨析

can(could)和be able to都可以表示能力，意思上没有区别。但can只有现在式和过去式，而be able to则有更多的形式。如：

I’ve always wanted to able to speak fluent English.

Those bags look really heavy, are you sure you’ll be able to carry them on your own?

但是，表示在过去某时的某一场合经过一番努力，终于做成了某事，通常不用could，而用was/were able to来表示。这时，was/were able to相当于managed to do或succeed in doing。如：

After the accident it was a long time before she was able to walk again.

The fire was very big, but most people were able to escape from the building.

(3) 惯用形式“cannot …too…”表示“无论怎么……也不（过分）”。如：

You cannot be too careful.你越小心越好。

惯用形式“cannot but+ 不定式（不带to）”表示“不得不，只好”。如：

I cannot but admire her determination.我不得不钦佩你的决心。

二．may和might

情态动

词

用法例句

may/mig 表示允许、许可。否定回答一般用must

not/mustn’t,表示“禁止、阻止”之意，但

也可以用had better not (最好别)或may

not（不可以），语气较为委婉。

1．May I come in and wait?

2．——May I smoke here?

——No, you mustn’t(或No, you’d better

not.)

在表示请求、允许时，might比may语气

更委婉些。用May I征询对方许可在文体

上比较正式，在口气上比较客气，在日常

用语中，用Can I征询对方意见更为常见。

1．Might I borrow your pen?

2．I wonder if I might speak to your son.

表示可能性的推测，通常用在肯定句和否

定句中，含有“或许”“大概”“可能”之

1．It may rain this afternoon.

2．She might come to join us this afternoon.

ht 意；用might代替may时，则语气显得更

加不肯定。

3．I suppose he might have missed the train.

may用于祈使句表示祝愿1．May you succeed.

2．Long may he live! 愿他能持续住下去。3．May you have many more days as happy as this one.

4．May she rest in peace.愿她安息。

惯用句式：

“may well+ 动词原形”，意为“完全能，很可能”，相当于to be very likely to

“may as well或might(just)as well+动词原形”意为“最好，满可以，倒不如”，相当于“had better或there is no reason to do anything else. 1．It may well change forever the way you look at Greek art.

2．There may well be a real problem here. 3．There is nothing to do, so I may as well go to bed.

4．You may as well tell us now, we’ll find out sooner or later.

5．I suppose we might as well go home. 6．And if you have to plough the field anyway, you might as well plant it at the same time.

三．must和have to

情态动

词

用法例句

must 表示“必须，应该”之意，语气比should，

ought to强烈。其否定形式mustn’t表示“不

准，不应该，禁止”等意

1．You must come to school on time.

2．Everybody must obey the law.

3．You mustn’t drive so fast in the street.

4．We mustn’t waste any more time.

在回答带有must的问句时，否定回答常用

needn’t或don’t have to，表示“不必”，而

不用mustn’t

1．—Must I come back before ten?

—Yes，you must.(No, you needn’t)

表示有把握的推测，意为“一定、准是、

相必”，只用于肯定句中

1．It must be my mother.

2．You must be hungry after a walk.

3．There must be a hole in the wall.

have to have to “必须，不得不”，意义与must相近。但

must表示的是说话人的主观看法，而have

to则往往强调客观需要。

1．The film is not interesting. I really must

go now.

2．I have to go now, because my mother is in

hospital.

must只有一种形式，即现在式与过去式都

是一种形式，而have to则涉及各种人称、

时态等方面的变化形式。

1．I had to work hard when I was your age.

2．I will have to learn how to use a computer.

3．In order to take the exam, we’ll have to

finish the whole book by the end of this

month .

两者的否定意义不同，mustn’t表示“禁止，不许”，don’t have to表示不必。1．You mustn’t go there. 2．You don’t have to go there.

四．shall和should

情态动

词

用法例句

shall 用于第一、二、三人称构成的疑问句，表示征求对方意见或请求指示1．Shall I open the window? 2．Shall we say 6 o’clock, then? 3．What shall I get for dinner?

用于第二、三人称陈述句中，表示说话人给对方的命令、警告、允诺或威胁。1．Don’t worry, you shall get the answer this afternoon.(允诺)

2．He shall be sorry for it one day, I tell you.

（警告）

3．You shall do as I say. (命令)

4．If you children don’t do as I tell you, you shall not go to the party. (威胁)

should 表示劝告或建议，意为“应该”1．What should I do?

2．Should I trust him?

3．You should read his new book.

表示推测，用在肯定句中，对现在的情况或可能发生

的事的主观推测或期待。意为“想必，大概，或许”1．It should be a nice day tomorrow.

2．Try phoning Robert, he should be home now.

3．He should be around sixty years old.

还可以用在if引导的条件句中，表示一件事听起来可能性很小，但也不是完全不可能，相当于“万一”的意思。从句谓语用should+动词原形构成，主句都一定用虚拟语气1．Ask Tom to ring me up if you should see him. (你万一见到汤姆，请让他给我打个

电话)

2．Should I be free tomorrow, I’ll come. (万一我明天有时间，我就过来)

3．If things should change suddenly, please let me know. (万一情况突变，请通知我)

用于疑问句或感叹句中，表示意外、惊异的情绪，意为“竟会”，与why，what，how，who连用，如果是疑问句，则不需要回答。1．Why should anyone want to marry Tony? 2．Don’t ask me. How should I know?

五．will和would

情态动

词

用法例句

will/would 用于表示意志或意愿。will指现在，

would指过去。1．He is the man who will go his own way. (他首歌自行其是的人。)

2．They said they would meet us at 10:30 at the station.

表示请求、建议等，用would比用will委婉、客气。1．Will you please take a message for him? 2．Would you please tell me your telephone number?

表示习惯或倾向，意为“总是，惯于”。will至现在，would指过去。1．Fish will die without water.

2．People will talk. (人们总会说闲话。) 3．When we worked in the same office, we would often have coffee together.

表示推测，意为“很可能，大概”。will表示推测比should把握大，比must把握小。1．These things will happen.

2．That will be the messenger ringing.

3．It would be about ten o’clock when he left home.

表示功能，意为“能，行”。惯用形式：will do/would do表示“解决问题”、“就行”。1．That will be all right.

2．Either pen will do.

3．It would not do to work too late.（工作太晚不行。）

用于否定句中，意为“不肯”、“不乐意”1．I won’t listen to your nonsense.

2．No matter what I said, he wouldn’t listen to me.

特别说明：would与used to辨析

would可用来表示过去反复出现的动作，但不能表示过去存在的状态，所以我们不能说：“she would be a quiet girl.”

另外，would强调过去某种特定情况下的活动，是完全过去的事情，同现在没有联系。而used to则着眼于过去和现在的对比，隐含现在已不存在，动作或状态都可表示。Would可以表示不规则的习惯，used to则不可。如：

He used to be a naughty boy and cause trouble.

I used to get up at six in the morning.

Sometimes she would take a walk in the neighboring woods.

In those days, whenever I had difficulties, I would go to Mr. Chen for help.

六．need和dare

情态动

词

用法例句

用于表示“需要，必要”之意。做情态动词时，仅用于否定句和疑问句，只有现在时，过去式要用needn't have，疑问式用need+人称?,否定式用need not(即needn't），1．—Need we leave soon?

—Yes, you must.(No, you needn't)

2．You needn't have hurried.

(=It was not necessary for you to hurry，but you did).你当时不必这么匆忙。

need 做实义动词时，其变化与一般的实义动

词相同，后接带to的不定式（need doing

= need to be done ）,过去式用

needed、did you need?和didn't need,

肯定式用needs/needed/need,疑问式

用do、does、did提问，否定式要在前

面加don't、doesn't、didn't

1. A job like nursing needs patience and

understanding.(need+名词，need

understanding=need to be understood,需要被

理解)

2．He needs to see a doctor.(need to do)

3．Do you still need volunteers to help clean up

after the party?(need somebody to do

something)

4．They didn't need to start so early.(do not need

to do)

dare 用于表示“敢于”之意。做情态动词，没有人称和数的变化，主要用于否定句、

疑问句和条件状语从句中1．—Dare you tell her the truth?

—Yes, I dare. /No, I daren’t. 3．How dare you accuse me of lying! 4．He daren’t admit this.

用作实义动词时，其变化与一般的实义动词相同。在肯定句中，dare后接带to 的不定式；否定句中，dare后既可接带to的不定式，也可接不带to的不定式。1．Only a few journalists dared to cover the story.

2．He doesn’t dare (to) go there alone. 3．Don’t you dare (to) touch it?

七．ought的用法：

情态动

词

用法例句

ought to do 表示“应该”之意1．You ought to take care of him.

2．—Ought I go now?

—Yes, you ought to. /No, you oughtn’t to.

表示推测。注意与must表示推测是的

区别

1．He must be home by now. (断定他已到家)

2．He ought to be home by now. (不十分肯定)

3．This is where the oil must be. (比较直率)

4．This is where the oil ought to be. (比较含蓄)

说明：should与ought to 表示“应该”时的区别

should 表示自己的主观看法，而ought to的语气中，含有“按道理应该……”之意。若要反映客观情况或涉及法律义务和规定，一般用ought to。如：

You should help them with their work.

You are his father. You ought to get him to receive good education.

八．“情态动词+have done”用法

情态动词+have done 用法例句

must have done 表示主观上对过去已经发生的行为

进行推测，意为“想必，准是，一

定做了某事”1．She must have gone through a lot.

2．He must have visited the White House during his stay

in the United States.

may/might have done 表示对过去已发生行为的推测，意

为“也许/或许已经（没有）……“。

一般用于肯定句或否定句中，不用

于疑问句。用might则表示语气更

加不肯定。1．You may have learnt the news. 2．He may not have heard his name called.

3．Sorry I’m late. I might have turned off the alarm clock and

gone back to sleep again.

can…have done cannot have done 表示对过去发生的行为的怀疑和不

肯定，通常用在否定句和疑问句中。

（can换成could时语气委婉）

1．Where can she have gone?

2．Could he have done such a

foolish thing?

3．The boy can’t have finished

reading the book so soon

because it is difficult even to

an adult.

could have done 可用于肯定句中，表示“可能已

经……”之意，此外，还可以表示

过去能做而没做的事，有一种对过

去为付诸实施的事情的惋惜。1．He could have killed himself driving at a dangerous speed. 2．You could have been more considerate.

3．You could have done better, but you were too careless.

might have done 表示“本来可能……，但实际上没

有发生的事情”。另外，还可以表示

“本来应该或可以做某事”之意，

含有轻微的责备语气。1．You should not swim in that sea. You might have been

eaten by a shark.

2．He might have given him more help, thought he was

busy.

should/ought to have done 用于肯定句时，表示本该做某事，

而实际上未做；用于否定句时，则

表示不该做的事反而做了。

1．He should have known that

the police would never allow

this sort of thing.

2．You shouldn’t have done it so

carelessly.

3．You ought to have returned

the book earlier.

4．You ought not to have refused

his offer.

needn’t have done 表示做了本来不必去做的事。注意：

didn’t need to do表示“没必要做而

实际上也没有做某事”1．You needn’t have watered the plants, for it is going to rain. 2．I didn’t need to buy the

dictionary. I had a copy at home.

had better have done 用于事后的建议，含轻微责备的口

吻，意为“当时最好做了某事”，其

否定式had better not have done表

示相反的含义。1．You had better have started earlier.

2．You had better not have scolded her.

would rather have done 表示“当时宁愿做了某事”，其否定

式would rather not have done表示

相反的含义，两者都表示“后悔”

之意。

1．I would rather have taken his

advice.

2．I would rather not have told

him the truth.

【真题演练】

情态动词练习

1.------"May I go now?"

-------"No, you ________. "

A. mustn't

B. needn't

C. mightn't

D. won't

2. You _________ do the exercise if you don't want to.

A. may not

B. can't

C. mustn't

D. needn't

3. You _________ pay more attention to your spelling next time.

A. would

B. should

C. will

D. shall

4. The girl _________ out alone at night.

A. dare not go

B. dare not to go

C. dares not go

D. does not dare go

5.Bruce must have been in China for a long time,_____?

A.hasn’t he

B.mustn’t he

C.Isn’t he

D.wasn’t he

6. There ________ be a lot of small houses on both sides of the street.

A. used to

B. get used to

C. would

D. did use to

7.It must have snowed last night,____?

A.isn’t it

B.haven’t he

C.mustn’t it

D.didn’t it

8.If they _________ to do this work, he might do it some other way.

A. were

B. should

C. will

D. can

9. I was told yesterday that the company _________ me to Rome next week for a business conference.

A. should have sent

B. were going to send

C. should be sending

D. should send

10.Let's take a walk, ________?

A. will we

B. don't we

C. do we

D. shall we

11. You must have seen him off yesterday, _________?

A. haven't you

B. didn't you

C. mustn't you

D. needn't you

12.---- That must be a mistake.

---- No .it _________ be.

A. can't

B. isn't able to

C. can

D. was able to

13. He had known the matter before you told him, so you _________ have told it to him.

A. mustn't

B. can't

C. needn't

D. shouldn't

14. How ________ so?

A. dare you to say

B. dare you say

C. do you dare say

D. dare to say

15. You are their teacher. You _________ care of them.

A. should to take

B. might to take

C. ought to take

D. need to take

16. She is studying medical science now but she _________ a lawyer.

A. used to be

B. would be

C. were

D. had been

17. If you were in an English-speaking country, you, too, _________ English every day.

A. will be used to speak

B. will be used to speaking

C. must be used to speak

D. would be used to speaking

18. I did not call to make my airline reservation (预订) but I _________.

A. should have B, may have C. must have D. shall have

19. As a girl, she _________ get up at six every day.

A. would

B. will

C. might

D. should

20. Don't you remember that we _________ to the cinema tonight?

A. would go

B. go

C. are going

D. will be gone

21.---- Shall I tell John about it?

---- No, you _________. I've told him already.

A. needn't

B. wouldn't

C. mustn't

D. shouldn't

22.------"Would you mind if I open the window?"

-------“__________”.

A. I don't like it

B. Yes .please

C. No, please

D. No. I'm sorry

23.-----"Would you tell me something about the affair?"

------“__________”.

A. Yes .please

B. All right

C. Not at all

D. I do

24. M:________?

T:I'd love to, but I'm afraid I have no time."

M:0h, no. You'll surely come over.

T: It's very nice of you. But I'm sorry I have to go to a meeting.

A. Do you have lunch out in a restaurant

B. Shall I have you with me at my birthday

C. Did you go to see the film

D. Have you enjoyed yourself at the party

25.------"You ought to have come here ten minutes ago?"

--------"Yes, I _________. "

A. ought to

B. ought to have

C. ought

D. have ought to

26.------"Would you like to go out for a walk?"

------"Yes, ___________. "

A. I'd like to

B. I'd like

C. I'll like to

D. I would

27. ________ you succeed !

A. Can

B. May

C. Must

D. Will

28. Did he need ________ then?

A. leave

B. to leave

C. leaving

D. left

29. Do you think if he dares _________ in public.

A. speak

B. speaking

C. to speak

D. spoken

30. He ________ eating American food since he came here.

A. used to

B. has been used

C. has been used to

D. was used to

情态动词教案

武汉龙文教育学科辅导教案 学生王梓恒教师陈双莲学科英语 时间2月日星期时间段10:00—12:00 教学目标： 1掌握情态动词can, may, must, need, should…的含义和特点 2 掌握情态动词用法 3 掌握need作为情态动词和实义动词的用法 教学重难点： 1 含有情态动词的疑问句和否定句 2 情态动词表示推测的用法 3 掌握need作为情态动词和实义动词的用法 教学流程及授课提纲 一情态动词 （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 （三）情态动词的结构和意义 1.情态动词的基本句型肯定句、否定句、疑问句 2. 情态动词的意义：must“必须” ；can/could“能，会” ；may/might “可以”；should“应该”；would“愿，要” ；have to“不得不” ；need“需要” （四）情态动词的基本用法 1.can (could主要指过去时间) 2. may (might) 3. must（have to表示客观需要） 4.shall 5.should 6.will 7.would 二need 的用法 （一）用作实义动词 作为实义动词，need后面的宾语可以是名词、动名词、动词不定式或代词，这种情况下，need既可用于肯定句，也可用于否定句和疑问句，构成否定句和疑问句时要借助于助动词do或does. （二）用作情态动词 作为情态动词的need具有情态动词的一般性质，要充分阐释作为情态动词的need的用法，务必首先说明白情态动词的特征。 （三）用作名词

need作为名词，含义为“缺乏，需要”；其复数表示“基本需要”。要掌握两个词组：in (great) need of（急需）与meet the needs of(满足……的需要)。 学生对于本次课的评价： □特别满意□满意□一般□差 学生签字： 教师评定： 1、学生上次作业评价：□好□较好□一般□差 2、学生本次上课情况评价：□好□较好□一般□差 教师签字： 附： 跟踪回访表 家长（学生）反馈意见： 学生阶段性情况分析： 自我总结及调整措施： 龙文教育教务处 主任签字：

情态动词表推测用法总结(整理稿)

情态动词表推测用法总结 （一）情态动词表推测 能用于表推测的情态动词： 英语情态动词表推测的时态构成 （1）语气部分：（以下情态动词语气由强至弱） 肯定句：must、may、might（=could） 否定句：can’t（=couldn’t）、mayn’t、mightn’t 疑问句：can、could（语气更加委婉不确定） （2）时态部分： 一般现在或一般将来时间的推测：情态动词+be；情态动词+v. 对过去时间的推测：情态动词+have done 对正在进行的时态的推测：情态动词+be doing （二）表许可、请求 1、 can, could 2、may, might 3、must 4、shall 5、will, would 1. can, could 1) 用在疑问句中，表示一般的请求。两者不同在于：用could 要比用can更加委婉，特别是没有把握得到允许时。 Can I go with you? 我能和你一起去吗？Could I ask you something? 我能问你一个问题吗？ 2) 用在陈述句中，表示许可：You can leave when you finish your work. 做完事情后你才可以走。 2. may, might 1) may用在疑问句中，也表示一般的请求。同can相比，may比较正式，常常表示尊敬之意。并且，may在疑问句中常用于第一人称，很少有May you…/they…这样的句型。Might比较少用在疑问句中，它表示请求的时候常用陈述句。 May I make a suggestion? 我可以提个建议？ 2) 用在陈述句中，表示许可，此时与can, could相近。 You may have a rest before we set out again. 我们再次出发之前你可以先休息一下。 3. must 1) 表示说话人“不许”和“禁止”某人做某事，有很强的劝告语气。 Cars must not be parked here.此地不准停车。 2) Must的一般疑问句的回答有两种，表示肯定，用Yes, you must. 表示否定，用No, you needn’t. Must I post this letter tomorrow? 我明天必须得寄掉这封信吗？ Yes, you must. 是的，你必须明天寄掉。

情态动词教案

新课讲解情态动词 情态动词的定义: 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。 We can be there on time tomorrow. 我们明天能按时去那儿。May I have your name? 我能知道你的名字吗？Shall we begin now? 我们现在就开始吗？You must obey the school rules.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, ought to, dare (dared), shall (should), will (would) . 情态动词的位置: 情态动词在句中放在谓语动词之前, 谓语动词前若有助动词,则在助动词之前,疑问句中, 情态动词则在主语之前。 　I can see you. Come here. 我能看见你，过来吧。He must have been away.他一定走了。 　What can I do for you? 你要什么？How dare you treat us like that！你怎能那样对待我们！ 情态动词的特点: 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。 He could be here soon. 他很快就来。We can't carry the heavy box. 我们搬不动那箱子。 　I'm sorry I can't help you. 对不起，我帮不上你。 １．Can/could （１）can 一般表示体，脑力方面的能力，意为“能，会（做某事）”，也可用来表示客观的可能性，意为“可以，可能”。例如：He can swim in the river．I can do the work myself． The boy can sing in English．I can help you with your housework． （２）can ＼could 也可以用于疑问句，否定句中表示“猜测”。如： He can't be at home.他不可能在家。 （３）can还能用来询问或请求一件事可以不可以做，常用于口语中，相当于may。例如：Can I help you? ＝May I help you? can 的否定式是在其后加not，写为cannot 或can't。例如：You can't stay here you can go home now.（4）表示能力（体力、知识、技能）。 Can you lift this heavy box?（体力） Mary can speak three languages.（知识）Can you skate?（技能） 此时可用be able to代替。Can只有一般现在时和一般过去式；而be able to则有更多的时态。 I’ll not be able to come this afternoon. 当表示“经过努力才得以做成功某事”时应用be able to，不能用Can。如： He was able to go to the party yesterday evening in spite of the heavy rain. (5)表示请求和允许。 -----Can I go now? ----- Yes, you can. / No, you can’t. 此时可与may互换。在疑问句中还可用could, might代替，不是过去式，只是语气更委婉，不能用于肯定句和答语中。 ---- Could I come to see you tomorrow? ---- Yes, you can. ( No, I’m afraid not. ) (6)表示客观可能性（客观原因形成的能力）。 They’ve changed the timetable, so we can go by bus instead. This hall can hold 500 people at least. (7)表示推测（惊讶、怀疑、不相信的态度），用于疑问句、否定句和感叹句中。 Can this be true? This can’t be done by him. How can this be true?

情态动词教学设计

Modal verbs 情态动词的用法二 (By Wang Huiyu from Newman School ) I. Teaching Objectives: 1. Cultivate Students’ abilit y of logical thinking and creative thinking, as well as the ability of thinking in English. 2. Cultivate Students’ comprehensive aptitude of Eng lish language use. 3. Cul tivate the students’ ability. II. Focus and difficult points: The second usage of modal verbs---guessing III. Teaching Methods: Communicative/task-based/ student-oriented teaching method IV. Teaching Aids PPT/ Pictures/songs/ Learning paper V. Teaching duration: 40minutes VI. Teaching process: 一. lead in Watch a video, then answer a question. 二、Through three steps Step 1 Go over the first usage of modal verbs 5 tasks Step 2 The second usage of modal verbs---guessing，4 tasks。 Step 3 Exercises 三、Summary 四、homework 1.Finish a paper of modal verbs 2.Preview Section A.

小学英语情态动词完整版

小学英语情态动词 HEN system office room 【HEN16H-HENS2AHENS8Q8-HENH1688】

小学英语教案——情态动词 情态动词本身有各种意义，但不能单独作谓语，只能和主要动词一起构成谓语，表示说话人的语气和情态，这样的动词称为情态动词。情态动词没有人称和数的变化。 常用的情态动词有can, could, may, might, will, would, should, must, need, dare等。 一、can, could的用法 1. can的用法 （1）表示能力、许可、可能性。 如：Can you speak English 你会讲英语吗？ Can you play the piano 你会弹钢琴吗？ She can swim fast, but I can’t. 她能游得快，但我不能。 I can see with my eyes. 我用眼睛看。 （2）表示请求或者许可。 如：Can I help you 我能帮助你吗？You can’t play baske tball. 你不能玩篮球。 Can you...“请你……好吗？”表示说话人的请求；Can I...“我可以……吗？”用来征求对方是否允许自己做某事。如在句末加上 please一词就显得更有礼貌了。例如： Can you help me, please 请你帮助我好吗？ You can use my dictionary. 你可以用我的字典。 （3）表示推测，意为“可能”，常用与否定句和疑问句中，此时can’t译为“不可能”。 如：Can the news be true 这个消息会是真的吗？ The moon can’t always be full. 月亮不可能常圆。 2. could的用法

初中英语语法情态动词用法大全

情态动词 有can (could), may (might), must, have to, shall (should, will (would), dare (dared), need (needed), ought to等。情态动词无人称和数的变化；不能单独使用，必须与其后的动词原形构成谓语。 情态动词 句和疑问句中表示请求，允许，意为“能够” could 是can 的过去式，意为“能、会”，表示过去的水平在疑问句中表示委婉请求 may 表示请求、许可，意为“能够”表示推测，常用于肯定句中，意为“可能、也许” might 是may的过去式,表推测，常用于肯定句中，意为“可能、也许”must 表示主观看法，意为“必须、应该”表有把握的推测，用语肯定句dare 表示敢于，主要用于否定句和疑问句中 should 意为“应该”，表示要求和命令表示劝告、建议 had better 意为“最好”，表示建议 used to意为“过去常常，表示过去的动作、行为 考点一情态动词知识清单 情态动词有具体的词义，但也同助动词一样，需要与其他词语一起构成句子的谓语，另外情态动词没哟人称和数的变化，情态动词后必须跟动词原形。 1. can 的用法 （1）表示水平、许可、可能性。表示水平时一般译为“能、会”，即有种水平，尤其是生来具备的水平，此时may 和must 均不可代替它。（2）表示可能、能够。如：I can finish it in an hour. （3）表示许可，常在口语中。如：You can use my dictionary. （4）表示推测，意为“可能”，常用于否定句和疑问句中，此时can’t 译为“不可能”。 2.could的用法 （1）can的过去式，意为“能、会”，表示过去的水平。 （2）could 在疑问句中，表示委婉的语气，此时没有过去式的意思。 3.may的用法 （1）表示请求、许可，比can 正式， （2）表示推测，谈论可能性，意为“可能，或许”，一般用于肯定句中。 （3）may的过去式为might ，表示推测时。可能性低于may 。 4. must的用法 （1）must 表示主观看法，意为“必须、一定”。 （2）其否定形式mustn’t表示“一定不要”“千万别”“禁止, 不许”.（3）对must引导的疑问句，肯定回答为must，否定回答为needn’t或don’t have to . （4）must 表示有把握的推测，用于肯定句。当must 表示肯定的判断、推测时，其反意疑问句要用实际问句的助动词来构成。 She must have finished writing, hasn’t she? 5. need的用法 （1）need 表示需要、必须，主要用于否定句和疑问句中，其否定形式为needn’t，意为“没有必要，不必”。用need 提问时，肯定回答为must，否定回答为needn’t。如：----Need I stay here any longer? ----Yes, you must .-----No. you needn’t . (2) need 还能够作实义动词，此时有人称、数和时态的变化，后边多接动词不定式。 6. dare 的用法dare意为“敢、敢于”,用法近似于need，有两种词性： （1）dare 作为情态动词，多用于否定句、疑问句或条件句中，无第三人称单数形式，只有一般现在时和一般过去时。 （2）dare 作为实义动词，此时有人称、数即时态的变化。注意：在口语中，dare 的各种形式常与不带to 的不定式连用。Do you dare tell her what I said? 7. shall 的用法 （1）shall 表示征求对方意见（多用于第一、三人称）， Shall we go out for a walk? （2）表示决心、警告、命令（多用于第二、三人称）， No one shall bring your beepers or mobile phones in the exam. 8. should的用法 （1） should 意为“应该”，可表示劝告、建议、义务、责任等。We should protect the environment. （2） should (would)like to do sth. 表示“想要、愿意做某事”，常用于口语中。Would you like to go with me? 你想和我一起去吗？ （3）Should have done 表示对过去动作的责备、批评。 You should have finished your homework. 9. will 的用法 will表示意愿、意志、打算，可用于多种人称。 I will help you if I’m free this afternoon. 10. had better 的用法 had better 意为“最好”，没有人称的变化，后面接不带to 的不定式，其否定形式为：had better not。 We had better go now. You had better not give the book to him. 考点二含有情态动词的疑问句 1. 由can、may、must构成的疑问句 （1）句式：Can/ May/ Must…+ 主语+动词原形+….？如：Can you repair the car? Could he be a good student? May I borrow your ruler?Must we clean the room now? （2）对may 引出的问句，能够有下列回答方式：Yes, of course. Yes, certainly.Sure.No, you mustn’t.No, you can’t. （3）对must引出的疑问句，回答为：Yes, …must.No,…needn’t/don’t have to. 2. will，would，shall 的用法 （1）will 在一般疑问句中表示客气的“请求、劝说”。would 是will 的过去式，语气更加客气、委婉。Would you show me your picture book? Will you please give me a call? （2）对will/ would you…的回答方式有以下几种：Yes, I will. (No, I won’t.)Sure . (I’m sorry , I can’t.)All right.Certainly. (No, thank you .) Yes, please. （3）shall引出的疑问句用于第一人称，表示征求对方意见或客气的请求。其回答方式有以下几种：Yes, please.All right. No, thank you. 考点三不同情态动词的否定意义也不同 1. （1）can’t可译为“不会”，如：I can’t play basketball. 我不会打篮球。（2）当句子表推测时，用can’t表达不可能，He can’t be ill. He is playing chess with Tom.（3）can’t还可用来回答“ May I …?”这样的问句。May I come in ?No, you mustn’t. / can’t.（4）can’t还可用于固定习语中。She can’t help crying. 2.may 的否定式为may not ，译成“可能不”，He may not be at home. 3.（1）mustn’t表示不许，不可。He mustn’t leave his room.

情态动词教学设计

<<情态动词>>教学设计 Ⅰ.Teaching Aims and Demands 1.knowledge Objects can ,could, may,might,, must,need, will would shall should 2.Ablity objects (1)Train students’the skill of doing exercises. (2)How to use Modal verb. 3.Moral Object Helping each other is very important, It is a good quality.. ⅡTeaching key points and Difficult Points (1)can ,must (2)Must I do some chores? Yes, you must. No, you need not. ⅢTeaching Methods Explanations and teaching Doing some exercises. ⅣTeaching aid Some materials ⅤTeaching procedures Step1 Lead in Make a list of modal verbs by students. Step2 New lesson 1.can (1)can ＝be able to. (2)Could you do sth?

Yes,you can No ,you can not. (3)can not 做否定推测 2.may (1)May I come in? Yes, you can. No, you cannot/must not. (2)may be and maybe 3.must (1)must 表肯定推测 (2)Must I finish this job? Yes, you must . No, you need not. 4.will and would would you like to go with me? Yes, I would like to . Sorry ,I can not. 5.shall and should shall we go together? You should be allowed to use mobile phone. Step3 Doing some exercises (1)first students do them by themselves. (2)Teacher check the answers one by one, and emphasize the important points and mistakes. Step4 summary This class we have learnt the modal verbs, and do some exercises about

小学英语情态动词知识点及练习

情态动词 【知识要点】: 情态动词（Modal verbs）本身有一定的词义，表示语气的单词。但是不能独立作谓语，只能和动词原形一起构成谓语。情态动词用在行为动词前，表示说话人对这一动作或状态的看法或主观设想。情态动词虽然数量不多，但用途广泛，主要有下列： can (could), may (might), must, need, ought to, dare (dared), shall (should), will (would) must not. 情态动词无人称和数的变化，情态动词后面跟的动词须用原形，否定式构成是在情态动词后面加 "not"。疑问形式是将情态动词提至主语前。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。

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