情态动词用法小结

无论是开展项目，还是记录工作过程，都需要通过总结的方式，回顾项目或工作的情况，从中寻找出利于成长的经验，为以后的项目与工作实施，提供相关方面的参考。因此，我们需要在某个时期结束后，写一份总结，下面是小编为大家整理的《情态动词用法小结》，欢迎阅读，希望大家能够喜欢。

第一篇：情态动词用法小结

情态动词小结

情态动词有：can(could)， may(might)， must，have to, shall(should)，will(would)，need, dare, ought to等。 一. 情态动词can, may, must用法 ㈠基本用法 1. can ⑴ 会，能够 --Can you swim? --Yes, I can. --No, I can‟t. ⑵ 口语中代替may. You can (may) park here. 你可以把车停在这里。(许可) 2. may允许，许可 --May I come in? --Yes, you may./Sure, come on in. --No, you mustn‟t./No, you can‟t.

No, you‟d better not. 3. must必须 --Must we finish the exercise today? --Yes, you must. --No, you needn‟t./No, you don‟t have to. 4. need 需要，必需--Need you go now?= -- Must you go now? --Yes, I must. --Yes, I must. --No, I needn‟t. --No, I needn‟t. (need作为情态动词，通常用在否定句和疑问句中。)

1 注意一：can 与be able to 都可以表示“能力”，区别是： ⑴ can只有现在和过去两种形式

I can play the piano. She couldn‟t play the piano when she was a little girl. ⑵ be able to ① 有更多的形式和时态

We shall/will be able to finish the work next week. I haven‟t been able to find the book. ② 指具体一次活动

I can swim but I am not able to cross the rough sea. 有时两者可以互换: I‟m not able to (can‟t) answer your question. Are you able to (Can you) type(打字)?

注意二：could的用法

⑴ 作为can的过去式，表示过去的能力。

When I was young I could climb any tree in the forest. 这时也可用was(were)able to ⑵ 用来代替can，婉转地提出请求，想法，建议等。回答这种情况下could引导的一般疑问句时，不用could，而要用can。 A: Could you tell me how to get to the hospital? B: Of cause, I can. 注意三：must的否定形式表示“不得”，“一定不要”，“禁止”

2 ① You mustn‟t take photos in here. It‟s forbidden(禁止). ② You mustn‟t drive without a license(驾照). ③ We mustn‟t be late, must we?

(与第4页对比，此must不表猜测,两回事。) 注意四：must的过去式是must，常用 had to 代替。 I had to see the dentist. 注意五：must 和 have to 都可以表示必须，但must表示说话人的主观看法，have to表示客观需要。 You must say sorry to me for that. You have to drive quickly, we have little time. 注意六：May+动词原形表“祝愿”。

May you succeed. May you be happy every day. ㈡ 可能性用法

1. can表示“可能性”① 疑问句：只能用can

Who can it be ?

② 否定句：cannot(can‟t)“不可能 It cannot be Jenny. 2. may表示“可能性”① 否定句：may not“可能不”

It may not be Jenny.

② 肯定句：“大概”，“也许”，“可能” It may be Jenny.

3 3. must表示“可能性”，只能用于肯定句，表推测：“一定是”，“准是”，“必是”，“必定”。

It must be Jenny. 小结表示“可能性”：

疑问句：只能用can 否定句：cannot(can‟t)“不可能”(反义词是must“准是”) may not“可能不”

肯定句：may “大概”

must“准是”(反义词是can‟t) 注意一: 在表示“可能性”时，凡是对过去事物的猜测，不管是疑问..句，否定句还是肯定句，都要用完成时。 ...① It must have rained last night. You see, the ground is still wet. ② He can‟t have been to your home. He doesn‟t know your address注意二：may+原型 表示 现在或将来的可能性。若表示对过去事物 .... 的猜测，则用完成时。 ③ He may come today.(tomorrow) He might come today.(tomorrow) (might语气更不肯定，不是may的过去时) ④ She might have called for help.她可能大声喊“救命”了。 请翻译下里句子：

1. Where can Wei Fang be?

4 2.That can‟t be Mary. She is in hospital. 3. Surely you can‟t be hungry. You‟ve only just had lunch. 4. The key can‟t be in the room. I have just searched it carefully. 5. You may/ can go and ask him. But he may not answer you. 6.A：Look! Someone is coming. Who can it be? B: It may be our headmaster. A: It can‟t be him. He has gone to Shanghai. B: It must be Mr. Zhang. He looks like our headmaster. 7. Anna may know Tom‟s address. 8. They may be waiting at the station. 9. I may be going to Europe next year. 10.He may have gone abroad. 11. I‟m afraid I must be going now. 12. You must be hungry. Have something to eat. 13. They must be twins. 14. There‟s a lot noise from next door. They must be having party a party. 15. I can‟t find him anywhere. He must have left. 16. I can‟t find my book. I must have left it at home. 17. You must have been thinking of something. 18. A: We went to Hainan for the winter vacation.

5 B: That must have been nice. 注意三：must表示猜测时的反义疑问句

⑴ “must be +表语”的结构，must表示肯定猜测时，含有“准是”，“势必”，“一定”等意义时，反义疑问句用“isn‟t/aren‟t+主语” They must be hungry after the long walk, aren‟t they? ⑵ “must have done” 表示猜测时，反义疑问句用“haven‟t/hasn‟t +主语”或“didn‟t+主语”

① They must have studied English before, haven‟t they? ② She must have met a fairy(仙女), hasn‟t she? ③ You must have seen the film last week, didn‟t you? ........解题秘笈：① 把must去掉 ② 找时间状语 ③ 重新组成一新句子 ④ 按新句子的时态造反义疑问句

① You must have been to Beijing, ___ __?

去掉must;无时状;重组成You have been to Beijing; 故答案为：haven‟t you ② You must have finished your homework yesterday, .........___ __?去掉must;时状为yesterday; 重组成 You finished your homework yesterday; 故答案为：didn‟t you 二.情态动词need的用法

⑴ need 表示“需要”，“必需”。作为情态动词，通常用在否定句和疑问句中。

① He needn‟t pay for it.( 情态动词)

6 =He doesn‟t need to pay for it.(行为动词) ② --Need you go now?= -- Must you go now? --Yes, I must. --Yes, I must. --No, I needn‟t. --No, I needn‟t. ⑵ need也可用作行为动词，其变化与一般动词相同。 ① We need to think it over.(肯定句) ② Does he need to know it?=Need he know it? ③ She didn‟t need to go.=She needn‟t go. ⑶ 按句型背：

need doing=need to be done ① The door needs painting. =The door needs to be painted. ② The old man needed looking after. = The old man needed to be looked after. 三.情态动词dare的用法

⑴ dare 表示“敢” 作为情态动词，通常用于否定句，疑问句或条件句中。dare 作为情态动词只有两种形式:dare, dared(当主语是第三人称单数时，dare 不加s) ① She dare not do so.(否定句) ② Dare he do it? (一般疑问句) ③ How dare you say I‟m unfair. (特殊疑问句) ④ Jump if you dare.有胆量你就跳。(条件句)

7 ⑵ 除了在“I dare say…” 这种习惯用语中，dare 在肯定句中作 情态动词的情况是很少的。(特殊用法，口语中常用，按句型背) ① I dare say you are wrong. ② A: If you die, who will get your money?

B: I dare say my uncle will. I have no other relatives. (亲戚) ⑶ dare 也可用作行为动词，其变化与一般动词相同。 ① Who dare to go? ② I don‟t dare (to) ask her. 问：此句中的to 为什么可以省略?

答: 当dare 作为①行为动词②在否定句中(两个条件必须同时具备)，其后面的不定式可以省略to。又如： ③ We didn‟t dare (to)try a shot. 四.情态动词shall和should的用法

⑴ shall 作为情态动词，用于二，三人称，表示说话人的意愿，有........“命令”，“警告”，“威胁”，“强制”，“允诺”等意思。(一人称用 shall是将来时)

① You shall do as I say.(命令) ② Tell him that he shall have the book tomorrow.(允诺) ③ You shall have whatever you want.(诺言) (我答应)你要什么我给你什么。

④ He shall be sorry for it one day.(警告)

8 有一天他会后悔的，我告诉你。

⑵ 在疑问句中，shall 用来征询对方意见或请求指示，用于一，三...........人称。译成“(你说)…好吗?”

① Where shall I wait for you? (你说)…

② 区别： Shall he come at once? (你说)他要不要立刻来?

(征求你的意见，情态动词)

Will he come at once?他将立刻来吗?(纯将来时) ③ Shall we start the meeting now?

④ Let‟s have a rest, shall we?(Let‟s 包括对方) 对比：Let us have a rest, will you?(Let us 不包括对方) 对于上述这类问句的回答，没有严格不变的肯定或否定模式。 ⑤ Shall I open the window? Yes, please. ⑥ Shall I get you some more tea? Yes, please. ⑦ Shall we have a meeting tomorrow? Yes ,I agree./ ( Well, I don‟t think we need to.) ⑧ Shall we go there by bike? All right.

( OK./Yes, I think so.) ⑨ Shall we go to the park? Good idea! ⑶ should 作为情态动词，译成“应该”

① You should keep your promise. ② We should be strict in all our work. 五.情态动词 will和would的用法

9 ⑴ will 表示“意志”,“意愿”,可用于各种人称。 .... ① I will(乐意，愿意) tell you all about it. ② We will help him if he asks us (to). ③ He won‟t go. ⑵ 在疑问句中，will用来征询对方意见或请求指示，用于二人称。...........译成“(你说)…好吗?”

① ---I‟m going down to the shop after school. Will you go with me? ---Yes,I will.( I‟m sorry, I can‟t) ② Will you please open the window? =Please open the window, will you? ③ Don‟t forget to give her some food and change her water, will you?(祈使句,用will you) ④ Be sure to write to us, will you?( 祈使句) ⑤ Let us have a look at your photos, will you? ⑥ –Alice, you feed the bird today,___? -But I fed it yesterday. A. do you B. will you C. didn‟t you D. don‟t you ⑶ 表示习惯性动作，有“总是”，“惯于”的意思。还表示“自然倾向”。

① He‟ll talk for hours if you give him the chance. ② Fish will die out of water.

10 would ⑴ would是will的过去式，表示过去时间的“意志”，“愿望”用于各种人称。

①“We will help you.” said they. They said that they would help us. ② No one would say that he couldn‟t see the Emperor‟s new clothes. ③ I promised that I would do my best.(按句型记) made a promise ⑵ 表示说话人的意愿或向对方提出请求，语气比will婉转。指的是现在时间。

① I‟d like to see your ten-speed bicycles. ② Would you like some bananas?( Bananas! I love them./ Yes, please./ No, thanks.) ③ --Would you like to see a film? --Yes, I‟d like to./I‟m glad to./I want to./ I‟d love to.…

/Thanks. I‟m afraid I won‟t be able to./Thanks. That would be nice. ④ --Would you like to come to supper? --Oh, thank you! I would love to. 注意：I‟d like to=I‟d love to=I would like to=I should like to =I would like to=I should love to.

11 ①--④按句型记

⑤ Would you tell me the way to the station?(比will 婉转) ⑶ 表示过去的习惯动作,“总是，惯于，过去常常”比used to 正式。且没有“现在已无此习惯”的含义。

① In winter, snow fell and the roofs of my old house would become thick, and all the trees would become white. ② She would sit like that for hours. ③ Every day she would get up at six o‟clock. ⑷ 表猜测

① It would be ten o‟clock when she left home. ② I‟d say she „s about 40. 六.情态动词ought to的用法

ought to=should“应该”，“应当” 否定形式oughtn‟t to= shouldn‟t ① You ought to visit your parents more often. = You should visit your parents more often. ② You oughtn‟t to make private phone calls in work time. = You shouldn‟t make private phone calls in work time. 七.情态动词had better的用法

had better表示“最好…”(had 常缩写为‟d) 否定形式为had better not ① You‟d better take a nap after lunch.

12 ② We‟d better wait for him. ③ You‟d better call a doctor. ④ They‟d better go home. ⑤ You‟d better not talk like that. 13

第二篇：动词不定式用法小结

动词不定式是一种非谓语动词形式，其结构为“to+动词原形”，其中to不是介词，而是动词不定式的符号，称为小品词，动词不定式没有人称和数的变化。动词不定式和其后面的名词等构成不定式短语，不定时短语在句子中可以用作主语、表语、宾语、补足语、定语、状语等。

一. 作主语

例如：

To be a doctor is hard.

做医生很难。

To learn English well is not easy.

学好英语不容易。

动词不定式(短语)作主语时，为了避免句子的头重脚轻，可以用“it”作形式主语，而把真正的主语--动词不定式(短语)放在句子的后部。例如上面的句子可以表示为：

It is hard to be a doctor.

It is not easy to learn English well. 再

1 如：

It’s important to plant trees in spring.

如果要表示动词不定式的动作是谁做的，可以在动词不定式的前面加一个由介词for引导的短语，称为不定式的复合结构。例如：

It’s good for us to read aloud in the morning.

对我们来说每天早晨大声读是很有益的。

It is important for students to use English every day.

对学生来说每天使用英语是很重要的。

二. 作表语：

动词不定式(短语)作表语常用于系词be的后面。例：

His work is to drive a car.

他的工作是开车。

My job is to feed animals.

我的工作是饲养动物。

Her ambition is to be a doctor.

她的理想是当医生。

三. 作宾语

动词不定式(短语)可以放在一些动词后面用作宾语，能以动词不定式作宾语的动词有：begin, start, want, forget, remember, show, learn, like, hate, love, ask等。例：

I want to tell you a story.

我想给你讲个故事。

They begin to work at eight every morning.

他们每天早晨8点开始工作。

Don’t forget to lock the door.

别忘了锁门。

Would you like to go and have a picnic with us tomorrow?

明天和我们一起去野餐好吗?

*如果and连接两个动词不定式，第二个动词不定式一般省“to”例：

(1)He wants to go and have a swim with us.

他想和我们一起去游泳。

(2)若作宾语的动词不定式(短语)很长，可用it作形式宾语。

I find it interesting to learn Chinese with you.

我觉得和你一起学汉语很有趣。

He found it hard to catch up with others.

他觉得赶上别人很困难。

四. 作宾语补足语。例如：

The teacher asked us to read aloud for half an hour in the morning.

老师让我们早晨朗读半小时。

The teacher often tells Jim not to spend too much time playing computer games.

老师常告诉Jim不要花太多时间玩电脑游戏。

Please let me help you.

让我来帮助你。

动词不定式作宾语补足语，表示宾语所做的动作，可以用动词不定式作宾

4 语补足语的动词有：tell, ask, want, like, invite, encourage, help等。但在let, make, have，see, watch, hear, feel, notice等感官听觉动词或使役动词后面作宾语补足语的动词不定式一般要省略动词不定式符号“to”，可以归纳为以下三种句式：

1.不可以省to的不定式作宾语补足语：

tell /ask / want / would like / wish / like / invite /encourage /teach sb. to do sth.

例：The teacher told us to come earlier tomorrow.

I want you to go now.

我想让你现在就去。

Her parents wish her to be a teacher.

她父母亲希望她当老师。

2.省“to”的不定式作宾语补足语：

Let / make / have sb. do sth.

Let the boy go out now.

让那个男孩出去。

The boy made the baby cry.

男孩弄哭了这个小孩。

see / watch / hear / notice / feel sb. do sth.

I saw the students play basketball on the playground yesterday.

昨天我看见学生们在操场打篮球。

I often hear the girl sing in the next room.

我经常听到女孩在隔壁唱歌。

3.可省可不省的：

help sb. (to)do sth.

I often help my mother (to)do housework.

我经常帮妈妈做家务。

*动词不定式的否定式是直接在to之前加not. 例：

(1)Tell them not to play football in the street.

告诉他们不要在街道上踢足球。

(2)省to的动词不定式的否定式是直接在动词前面加not. 例：

Let the boy not go.

让那个男孩别走。

(3)如果将主动语态变为被动语态时，作宾语补足语的动词不定式变为主语补足语，动词不定式则不省“to”，即原来省的再加上，例：

The boy made the baby cry.

The baby was made to cry by the boy.

那个孩子被男孩弄哭了。

五. 动词不定式作定语

动词不定式作定语常用来修饰名词或不定代词，放于所修饰的词后，为后置定语。例：

Who was the first one to arrive?

谁第一个到的?

She has no paper to write on?

她没有纸写字?

The best way to learn English is to use it.

学英语最好的方法是使用它。

When is the best time to plant vegetables?

什么时候是种植蔬菜的最好时间?

Do you have something to drink?

你这有喝的吗?

*动词不定式(短语)作定语修饰名词时，与其所修饰的词具有一种动宾关系，如果不定式中的动词为不及物动词时，其后应加上一个含义上所需要的介词。例：

I have no chair to sit on.

我没有椅子坐。

He has no house to live in.

他没有房子住。

六. 动词不定式作目的状语：

动词不定式作目的状语常用在go, come, hurry等不及物动词后，表目的。

He went to see his sister yesterday.

他昨天去看妹妹了。

They got up early to catch the early bus.

他们早起去赶早班车。

有时可以把不定式(短语)提前，放于句首，表示强调目的。例：

To learn English quickly and well, he went to England.

为了更快更好地学英语，他去了英国。

七. 不定式和疑问词连用，可以作句子的主语、宾语、表语等。例：

The problem is where to get a computer. (表语)

No one knows how to do it.

没有人知道如何做这件事。(宾)

I really don’t know which one to choose. (宾)

我真的不知道选哪一个。

When and where to have the party is not known. (主语)

何时何地举行联欢还不知道。

*不定式和疑问词连用作宾语时有时可以改为宾语从句。例：

I don’t know what to do next.

我不知下一步该做什么?

I don’t know what I should do next.

【模拟试题】(答题时间：30分钟)

一. 选择填空：

9 1. He asked me ________ here earlier.

A. come

B. to come

C. coming

D. came 2. Please tell him _______ on the wall.

A. don’t draw

B. to not draw

C. not to draw

D. not draw 3. He wanted ________ a cup of tea.

A. to have

B. having

C. have

D. had 4. I’d like ________ a word with you.

A. had

B. having

C. to have

D. have 5. I came here _______ my uncle.

A. saw

B. to see

C. seeing

D. to be seen 6. The man refused (拒绝)________ back his words. A. to take

B. taking

C. took

D. takes 7. I can let you ________ one ticket.

A. to have

B. have

C. having

D. had 8. We often heard him _________ in his room. A. to sing

B. sings

C. sang

D. sing 9. He was made ________ day and night.

A. work

B. working

C. to work

D. worked 10. He stopped ______ a look, but saw nothing. A. having

B. to have

C. have

D. had 11. My father was too angry _________ a word. A. to say

B. not to say

C. to saying

D. didn’t say 11 12. My brother was old enough ________ to school.

A. went

B. goes

C. going

D. to go 13. It is time ________ him ________ supper. A. of, to have

B. for, to have

C. of, having

D. for, to has 14. It’s very kind _______ you ______ me.

A. of, to help

B. for, to help

C. of, help

D. of, helping 15. It’s important _________ our classroom clean every day.

A. kept

B. to keep

C. to give

D. keep 16. Before liberation (解放)they had no chance _______ to school. A. went

B. go

C. to go

D. to be gone 12 17. He said he had an important meeting ________. A. attend

B. would attend

C. attending

D. to attend 18. Please give me a piece of paper ________. A. to write

B. to write on

C. writing

D. to write i ’t know _______.

A. what do B. what will do

C. what to do

D. do what 20. Your radio needs ________.

A，to be repaired

B. to repair

C. repaired

D. to repairing 21. My wish is ________ a teacher.

A. becoming

19. I don

B. to become

C. become

D. became 22. I want ________ him a letter now.

A, to write

B. not write

C. write

D. wrote 23. It took us three days _________ the trees. A. plant

B. planted

C. to plant

D. plants 24. Why not ________ here _______ me?

A. to come, to see

B，come, to see

C. came, seeing

D. come, see 25. He wishes me ______ my best

________ hard at English. A， to do, to work

B. doing, working

C. to do, working

D. do, work

26. Please tell me ________ her. I have something _______ her. A. where to find, telling

B, where to find, to tell C. where can find, to tell

D. where finding, telling 27. How happy they are ______ each other again! A，to see

B. see

C. saw

D. being seen 28. They decided (决心)_______ a letter ______ their thanks. A. to write, expressing(表达) B. writing, express C. write, expressed D, to write, to express 29. The officer ordered (命令)him _ ______ down _________ a rest. A. lying, have

B，to lie, to have

C. to lie, having

D. lie, had

15 30. The headmaster called on (号召)us ______ hard for our country. A. to work

B. worked

C. work

D. to working

【试题答案】

一.

1. B 2. C 3. A 4. C 5. B

6. A 7. B 8. D 9. C 10. B

11. A 12. D13. B 14. A 15. B

16. C 17. D 18. B19. C 20. A

21. B 22. A 23. C 24. B 25. A

26. B 27. A 28. D 29. B 30. A

第三篇：情态动词只有情态意义

情态动词只有情态意义，即它所表示的是说话人对动作的观点，如需要、可能、意愿或怀疑等。

情态动词的特征：

1.在形式上，情态动词没有实义动词的各种变化。

2.在意义上，大多数情态动词有多个意义。

3.在用法上，情态动词与助动词一样，须后接动词原形。

情态动词各自的基本意义及用法

一、can 与could用法对比表

对比点 can could

1、表“能力” Can you lift this heavy box? I couldn’t understand what he said at all.

2、表“许可” You can use a different material instead. He said I could borrow his bike.

3、“怀疑” No, no, it can’t be true.

What on earth can this mean? We thought the story could not be true. How could you be so careless?

4、can与be able to 区别 1. could代替 can，表示语气更为婉转。

Eg. Could I use your bike? Yes, you can.

2. can (能够)=be able to(仅表能力时)，但be able to 表示一番努力后，才能做得到，且有更多的时态。

He was a good swimmer, so he __________ swim to the river bank when the boat sank.

A. could B. might C. shall D. was able to

二、may与 might用法对比表

对比点 may Might

1.表“询问” May I „?(=Can I „?) Might I „?(=Could I„?)(但比用may 更客气) 1

2.表“允许” You may take the boy there. He told me he might come .(might 与told相呼应)

3.表“可能”“或许” She may nor like this place. I’m afraid he might not like this play.

注： 1. May I„?的答语。

2.may可表示期望或祝愿

May you succeed !

3.may (might)用于目的状语从句中 肯定：Yes, you may.

否定：No, you mustn’t 不行(语气强硬)

No, you may not 或No, you’d better not.

The emperor gave them some gold in order that they might begin their work at once.

三、must与have to的用法对比表

对比点 must have to

1.表“必须” (主观看法)必须;没有过去式，可用于间接引语中。He told me I must do according to what he said. (客观需要)不得不，有多种时态。It’s raining heavily, we can’t go now.

2.疑问句 Must I „?

Yes, you must.(一定)

No, you needn’t./ you don’t have to.(不必) Do you have to go today?

Yes, we do.

否定句：You don’t have to worry about that.

四、need与dare的用法对比表

对比点 need dare

1.情态动词+动词原形

1)否定式

2)疑问式 He need not (needn’t)go.

----Need we do it again?

---No, you needn’t do it again. He dare not say so. 2

Dare she go out alone at night?

How dare you say I’m unfair?

If he dare do that, he’ll be punished.(条件句)

I dare say.(固定用法)

2.行为动词+带to不定式

1)肯定式

2)否定式

3)疑问式 He needs to go.

He doesn’t (does not)need to go.

Does he need to do it again?

No, he doesn’t need ot do it again. He dares to say.

He does not(doesn’t)dare to say.

If you dare to jump into the water from here, so dare I .

3. did not need to do

表示过去没有必要做 She didn’t need to attend the meeting yesterday, and she stayed with her children.(她没有参加)

五、should与ought to用法对比表

对比点 should ought to

1、表“应该” 表劝告、建议

You should listen to the doctor’s advice.

We should learn from Zhang Hua 表示“有责任有必要”做某事

You ought to finish your work before you go home.

We ought to help each other.

2、表“估计”

They should get home by now. 表示“非常可能”的事，可译为“总应该”

If we start to work right now, we ought to finish it before lunch.(午饭前应当能干完)

注： 1)、should还可在虚拟语气中的使用

2). 注意：ought to的疑问式及否定式

----Ought he to go? ----Yes, I think he ought to.

No, he oughtn’t to.

否定式：ought not to a或oughtn’t to do(不说ought to not do)

反疑问句：oughtn’t ______?

六、shall与will的用法对比表

shall Will

1. 征询对方意见或请求指示，用于第

一、三人称：

Shall I (we)„?

Shall he (she)„? Where shall I (we)wait for you? 1. 询问对方的意思或向对方提出要求：

Will you(please)„? Won’t you„?

Would you like to„?(用would替代will更客气)

----Won’t you go and see the film?你不去看电影吗?---Yes, I think I will. 不， 我想去。

2. 表示说话人的“意愿”有“命令”“警告”“强制”“允诺”“决心”等，用于第

二、三人称，要重读。

You shall do what I tell you ( to do).

我叫你干什么你就干什么。

Everything shall be done to save the ship.

一定要竭尽全力来拯救这艘船。 表示“意志”“意愿”，用于各种人称：

I won’t do anything you don’t like.

我不会做任何你不喜欢的事。

Would表示过去时间的“意志”“意愿”

Shylock would not take the money earlier.

夏洛克先前是不肯要钱的。

七：used to与would用法对比表

used to would

1.表示过去的动作、状态，重在与现在情况的对比，不一定要有时间状语。

I used to play cards a lot, but now I seldom play. 4

My hometown is not what it used to be. 1.只表示过去动作的重复，有明确的时间状语

I would go to see my grandfather on Sunday when he was in the middle school.

2.would 后只接表动作的动词，不接表认识或状态动词

He used to be nervous in the exam.

2.表示过去的习惯有时可互换：

When we were very young, we used to / would go skating every winter.

2. 表示过去的次数时，不能使用：

( √)We went to the Great Wall five times when we were young.

( X ) We used to go / would go to the Great Wall five times when we were young.

注：used to do的否定式：usedn’t to do 或didn’t use to do (usedn’t也可写作usen’t)

疑问式： Did you use to do ? Didn’t you use to do?

Used you to do? Usedn’t you to do?

情态动词表推测

情态动词表推测的意义：

1、大多数情态动词(除表‘能力、许可、意志’外)，都可以表示推测，其程度有差异。按其可能性程度的高低排列为： Must ﹥will ﹥would ﹥ought to ﹥ should ﹥ can ﹥ could﹥ may ﹥ might

肯定 完全可能 很可能 可能 有可能

2.注意区分情态动词的否定的含义：

may not或许不、可能不 might not可能不 can’t 不可能

mustn’t不许、禁止 shouldn’t不应该 needn’t 不必

3.情态动词表推测具体运用：情态动词可以对现在、进行、过去推测

S主+情态动词+be+adj 对“性质”“特征”的推测

S主+情态动词+be+n 对“职业”“事物”的推测

S主+情态动词+V原 对经常性行为的推测

S主+情态动词+be+V-ing 对进行着的行为的推测

S主+情态动词+have+PP 对过去的行为的推测

特别提醒：情态动词表推测时

1、 can只能用于否定句和疑问句

2、 must只能用于肯定句(它的否定句和疑问句其实就用can来代替了)

3、 如句中有情态动词 + 完成时，定是对过去的推测 。

4、 句中如有表示不肯定的话语，如：I am not sure; I don’t know 之类，常选may /might的各种形式

4. 记住下面几组表示反劝的特殊的表推测的形式

1). could + have + PP表示本来能做到，但事实上没有做到。 He could have finished the task on time, but the heavy snow came.

2). couldn’t +have + PP表示本来不能做到，但已经做到了。 She could not have covered the whole distance, but in fact she arrived ahead of time.

3) needn’t + have + pp表示本不必做的，但已经做到了。 She needn’t have attended the meeting yesterday, but she did.

4.) should/ought to +have + PP表示 该做而没有做 The plant is dead. I should/ought to have given ot more water.

5) shouldn’t/ oughtn’t to +have + PP表示 不该做而做了。 You oughtn’t to / shouldn’t have taken her bike without permission.

5. 记住下面对比：

must只能用于肯定句(它的否定句和疑问句其实就用can来代替了)

1.must + have + PP 表示对过去肯定的推测，译为“一定是，准是” The road is wet. It must have rained yesterday.

2.can + have + PP 表示对过去的推测(限于问句中) Can she have said so? 他可能这样说吗?

3.can’t + have + PP 表示对过去的否定推测 He cannot have said such a foolish thing.

情态动词表推测的反意疑问句

情态动词表推测的反意疑问句，简单来说，就是以情态动词后的时态为淮，如句子里有明确的时间状语，则以其为准。以 must 为例：

eg. 1. You must be hungry now, aren’t you?

2. He must be watching TV , isn’t he ?

3 Tom must have lived her for a long time, hasn’t he ?

4. She must have arrived yesterday, didn’t she?

注：如选择题中(以She must have arrived yesterday, didn’t she?为例)既有didn’t she又有hasn’t she则以didn’t she?为最佳答案

第四篇：情态动词教案

情态动词

1. 概念: 情态动词: 表示说话者的某些观点或态度的词语.如 “能” , “或许” , “必须” , “需要” , “应该” 等. 2. 情态动词主要有: can, may, must, need, should, … 这些情态动词后面 + 动词原形. 3. 用法

① can ⑴ 表示能力,意为”能, 会”. 如:

eg: I can play basketball. 我会打篮球.

---Can you play basketball ? 你会打篮球吗? --- Yes, I can. / No, I can’t. 是的, 我会. / 不, 我不会.

⑵ 表示怀疑、猜测，常用 be 连用, 放在否定句和疑问句中。如：

eg: He can’t be in the room. 他一定不在房间里.

⑶ 表示请求或允许, 多用于口语中, 意为”可以”, 相当于 may. 如:

eg: You can go now. 你现在可以走了.

② could ⑴ 是can 的过去式, 表示过去的能力. 如:

eg: I could swim when I was a child. 当我还是一个小孩子的时候我就会游泳了.

⑵ couldn’t: “不能” 用could 提问肯定和否定回答分别用 could, 和 couldn’t.

如:

eg: --- Could you skate last year? 你去年会滑冰吗?

--- Yes, I could. / No, I couldn’t. 是的, 我会. / 不, 我不会.

③ may ⑴ 表示推测, 意为“可能; 或许” 用于肯定句中.

eg: He may be a teacher. 他或许是一个老师.

⑵ 表示请求、许可， 意为”可以” 如: eg: ---May I borrow your book? 我可以借你的书吗?

--- Yes, you can. / No, you mustn’t. 是的, 可以. / 不, 你你禁止借书. 注意: 当由may 来提问的时候, 肯定回答我们用Yes, you can. 否定回答用 No, you mustn’t. ④ must ⑴ 表示“必须、应该“;

eg: You must do your homework. 你必须做作业.

⑵ 表示推测, “一定” 常与be 动词连用. eg: He must be in the classroom. 他一定在教室.

⑶ must + not = mustn’t 禁止

eg: You mustn’t smoke. 禁止吸烟.

⑷ must 放于句首提问, 肯定回答Yes, you must. 否定回答 No, you needn’t.

⑸ must 与 have to 的区别：

must强调主观的看法.

have to 强调的是客观因素. eg: I must do my homework. 我必须做作业.(个人看法)

I have to go home now, because my mother is ill. 我不得不回家，因为我妈妈病了.(客观原因所导致)

⑤ need ⑴ 作情态动词使用后跟动词原形. You needn’t come here so early.

⑵ 作实义动词使用后接to do, He needs to drink some water. 他需要喝些水. 变否定句: He doesn’t need to drink any water.

变疑问句: Does he need to drink any water? Yes, he does. / No, he doesn’t.

⑥ should “应该” 一般指应尽的某种义务.

eg: As a student, we should finish our homework. 作为一个学生，我们应该完成作业.

练习：

(

) 1. Mr Wang ______ be in Nanjing now, he went to Beijing only this morning.

A. mustn’t

B. may not

C. can’t

D. needn’t (

) 2. –Must I saty at home, Mum?

--No, you ______.

A. needn’t

B. mustn’t

C. don’t

D. may not (

) 3. –Can you go swimming with us this afternoon?

--Sorry, I can’t. I _____ take care of my little sister at home because my mother is ill.

A. can

B. may

C. would

D. have to (

) 4. –May I go to the cinema, Mum? --Certainly. But you ______ be back by 11 o’clock.

A. can

B. may

C. must

D. need (

) 5. To make our city more beautiful, rubbish ______ into the river.

A. needn’t be thrown

B. mustn’t be thrown

C. can’t throw

D. may not throw (

) 6. –May I go out to play basketball, Dad? --No, you ______. You must finish your homework first. A. mustn’t

B. may not

C. couldn’t

D. needn’t (

) 7. –Where is Jack, please ?

--He _____ be in the reading room. A. can

B. need

C. would

D. must (

) 8. –Who is the man over there? Is it Mr Li?

--No, it ______ be him. Mr Li is much taller. A. musn’t

B. may not

C. can’t

D. needn’t

(

) 9. These books ______ out of the reading room. You have to read them here.

A. can’t take

B. must be taken

C. can take

D. mustn’t be taken (

) 10. –Mum, may I watch TV now?

--Sure, but you ______ help me with my housework first.

A. can

B. may

C. must

D. could (

) 11. The boy said he had to speak English in class, but he ______ speak it after calss.

A. could

B. didn’t have to

C. might

D. shouldn’t (

) 12. –Must we hand in the papers now?

--No, you ______.

A. can’t

B. may not

C. mustn’t

D. needn’t (

) 13. John ______ go there with us tonight, but he isn’t very sure about it.

A. must

B. can

C. will

D. may (

) 14. Even the top students in our class can’t work out this problem. So it ______ be very difficult.

A. can

B. may

C. must

D. need (

) 15. Put on more clothes. You ______ be feeling cold with only a shirt on.

A. can

B. could

C. would

D. must (

) 16. It’s still early. You ______.

A. mustn’t hurry

B. wouldn’t hurry

C. may not hurry

D. don’t have to hurry (

) 17. –May I stop here?

--No, you ______.

A. mustn’t

B. might not

C. needn’t

D. won’t (

) 18. A computer ______ think for itself, it must be told what to do.

A. can’t

B. couldn’t

C. may not

D. might not (

) 19. –Could I borrow your dictionary?

-- Yes, of course you _______.

A. might

B. will

C. can

D. should (

) 20. Peter ______ come with us tonight, but he isn’t very sure yet.

A. must

B. may

C. can

D. will (

) 21. Michael ______ be a policeman, for he’s much too short.

A. needn’t

B. can’t

C. should

D. may (

) 22. ______ I know your name?

A. May

B. Will

C. Shall

D. Must (

) 23. You ______ be more careful next time.

A. have to

B. may

C. must

D. might (

) 24. You ______ miss the lesson, though we ______ have it on Thursday.

A. mustn’t; needn’t

B. needn’t; mustn’t

C. mustn’t; mustn’t

D. needn’t; needn’t (

) 25. This pen looks like mine, yet it isn’t. whose ______ it be?

A. must

B. may

C. would

D. can (

) 26. What kinds of homes will we live in the future? Nobody ______ be sure, but scientists are working out new ideas now.

A. will

B. may

C. can

D. must (

) 27. I ______ like to know where you were born.

A. shall

B. should

C. do

D. may (

) 28. ______ you be happy!

A. Might

B. Must

C. Wish

D. May (

) 29. A teacher ______ do every exercise, but a student must.

A. may not

B. needn’t

C. can’t

D. mustn’t (

) 30. The matter ______ be changed into a gas, but it _______ be heated to its boiling point.

A. may; needn’t

B. may; can

C. mustn’t; needn’t

D. can; must (

) 31. Teachers and students ______ look coldly at you for a day or two, but there are friendly feelings in their hearts.

A. must

B. can

C. may

D. should (

) 32. Cars and buses ______ stop when the traffic lights turn red.

A. can

B. need

C. may

D. must (

) 33. –Do you think his story ______ true? --I don’ think so. But it sounds good.

A. must be

B. may be

C. can be

D. has to be (

) 34. Look out! The knife is very sharp. You ______ cut your finger.

A. need

B. must

C. should

D. may (

) 35. –How long ______ the book be kept?

--For two weeks, but you ______ return it on time.

A. can; may

B. may; need

C. can; must

D. must; need (

) 36. – May I have an apple, Mum?

--Certainly. But you ______ wash your hands first?

A. may

B. must

C. can

D. need (

) 37. –There is a lot of smoke coming out of the teaching building there.

--Really? It ______ be a fire, most probably.

A. can

B. ought to

C. may

D. must (

) 38. –Shall I tell John about the bad news?

--No, you ______. I think that will make him sad.

A. needn’t

B. wouldn’t

C. shouldn’t

D. mustn’t (

) 39. –Could I call you by your first name?

--Yes, you ______.

A. will

B. could

C. may

D. might (

) 40. –Let’s go to the cinema, shall we?

-- _______.

A. No, I can’t

B. Yes, I will

C. Yes, thank you

D. No, we’d better not (

) 41. --______ the man over there be our new teacher?

--He ______ be, but I’m not sure.

A. May; mustn’t

B. Can; may

C. Must; can’t

D. Can; can’t (

) 42. –Someone is knocking at the door. Who ______ it be?

--It ______ be Tom. He is still in the school.

A. can; can’t

B. can; mustn’t

C. might; could

D. might; may (

)43. Lily finished _______ the book yesterday.

A. read

B. reading

C. to read

D. reads (

) 44. Susan’s parents have bought a large house with a swimming pool. It _______ be very expensive.

A. must

B. can

C. mustn’t

D. can’t (

) 45. –The room is so dirty. _______ we clean it?

-- Of course.

A. Will

B. Would

C. Do

D. Shall

第五篇：高三情态动词专项

1.Some people who don’t like to talk much are not necessarily shy;they___ just be quiet people.

A.must B.may C.should D.would

2.—Why____you be talking so loudly while others are studying?

–--I am terribly sorry.A.shall B.must C.will D.may

3.—Where will you start your work after graduation?

—Um,it’s not been decided yet.I_____continue my study for a higher degree.

A.must B.need C.would D.might

4.--___it be Tom that stole the manager’s mobile phone?

---No,as far as I know,Tom is very honest.A.May B.Can C.Must D.Should

5.Traffic safety is so important that everyone___take safety measures too seriously.

A.shouldn’t B.mustn’t C.cannot D.won’t

6.Peter____be really difficult at times even though he’s a nice person in general.

A.shall B.should C.can D.must

7.You can’t imagine that a well-behaved gentleman_____be so rude to a lady.

A.might B.need C.should D.would

8.---The work will take me another week.I’m really tired.

—I think you___ as well go to ask an experienced worker for some advice. A.may B.can C.need D.must

9.—That must be a mistake.

—No,it_____a mistake.A.must not beB.needn’t be C.cannot be D.would not be

10.He was a good runner so he__ escape from the police. A.might B.succeeded to C.would D.was able to

11.A dog ran in front of my mother’s car and she___ stop very quickly.

A.ought to B.had better C.must D.had to

12.I didn’t hear the phone.I____asleep.A.must be B.should be C.must have been D.should have been

13.---I saw Mr Sun at Tongyu Station this morning.

—You____.He’s still on holiday in Hawaii.

A.couldn’t have B.mustn’t have C.shouldn’t D.needn’t

14.--What has happened to George?

—I don’t know.He____lost.

A.can have got B.may have got C.might get D.could get

15.Many people___to his home as he keeps a big dog.

A.not dare go B.dare not go C.not dare to go D.dare not to go

16.I don’t think he could have done so much homework last night,____?

A.do I B.could he C.has he D.did he

17.You ___late for yesterday’s class meeting,as it was so important.

A.couldn’t be B.shouldn’ t beC.mustn’t have been D.oughtn’t to have been

18.—The Chinese athletes did extremely well in the Olympics.

—Yes,they____well,or they____ such great achievement.

A.must have been trained;couldn’t have gotB.must have trained;could have got

C.must have been trained;mustn’t have gotD.should have trained;couldn’t have got

19.As you know,although there are no classes on weekends now,no students___go out of the schoolwithout the headteacher’s permission.A.will B.must C.may D.shall

20.Many women___ a good salary,but they chose to stay at home for the family.

A.must make B.must have made C.should make D.could have made

21.—Why hasn’t Mr.Green showed up at the meeting yet?

—I’m not sure,but he___ in a traffic jam driving here.

A.could be caughtB.might be caughtC.might have been caught D.must have caught