高中英语语法大全情态动词精讲精练
高中英语语法大全情态动词精讲精练
2013-06-04 10:44 来源：巨人网·英语整理作者：佚名
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?标签：
?高中英语语法
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导语：高中英语语法是英语学习的关键环节，学好英语语法能够全面提高英语听力、英语阅读、英语单选完形、以及英语写作。下面是小编为大家整理的高中英语语法大全，情态动词精讲精练，帮助大家自主复习高中英语语法。
一.概念:
情态动词是表示能力,义务,必须,猜测等说话人的语气或情态的动词.
二.相关知识点精讲:
1.can
1)表能力
can表能力时意味着凭体力或脑力或技术等可以无甚阻力地去做某事。
I can climb this pole. 我能爬这根杆子。
He is only four , but he can read. 他只有4岁，但已认得字了。
Fire can't destroy gold. 火烧不毁金子。
因为can不能和其他助动词连用，所以表示将来式时用will be able to
You will be able to skate after you have practiced it two or three times.
你练习两三次后就会溜冰了。
2)表可能性
多用于否定与疑问结构中，但也可用在肯定句中。
Can the news be true? 这消息可能是真的吗?
It can't be true. 它不可能是真的。
What can he possibly mean? 他可能是什么意思?
can 用在肯定句中表示理论上的可能性(一时的可能)。
A horse in the center of London can cost a lot of money. Attending the ball can be very exciting.
The road can be blocked. 这条路可能会不通的。
may 在肯定句中表示现实的可能性。
The road may be blocked. 这条路可能不通了。
3)表示允许(和may意思相近)常见于口语。
Can (May) I come in ? 我能进来吗?
Can I smoke here ? 我可以在这里抽烟吗?
2.could的用法
1)表过去的可能和许可，(多用于间接引语中)
At that time we thought the story could not be true.
那时我们认为所说的事不可能是真的。
Father said I could swim in the river.
爸爸说我可以在河里游泳。
2)表过去的能力
I could swim when I was only six.
我刚六岁就能游泳。
Could在肯定句中表示过去的能力时，常表抽象的一般的能力。
He could be very naughty when he was a child.
他小时候会是很顽皮的。
3)表"允许"。可表示委婉客气的提出问题或陈述看法
Could I use your bike?
Yes, you can.
他会记得那时吗?
I'm afraid I couldn't give you an answer today.
恐怕我今天不能回答你。
The teacher said you could go to the store for sweets.
老师说你可以去商店买糖。
3)Could/can+have done 结构表示对过去发生的事情的"怀疑"或"不肯定"。 could 加完成式还用于肯定句时一般表过去可能完成而却未完成的动作。
Can they have won the basketball match?
他们赢了那场篮球赛吗?
What you referred to just now can have made her very sad.
你刚刚所谈到的可能令他很伤心。
You could have completed the task a little earlier.
你本来能早点完成任务的。(但事实上并没有提前完成任务)
I could have passed my examination easily but I made too many stupid mistakes.
我本可以轻易通过考试，但我犯了太多不该犯的错误。
如表具体做某一件事的能力时，则须用 be able to .
He was able to translate the article without a dictionary.
他可以不用词典翻译那篇文章。
Can表示一贯的能力，be able to表示客观能力和通过努力可以达到的能力
I can't swim. But I am sure I will be able to swim through more practicing.
The fire spread through the hotel, but everyone was able to get out
When the boat sank he was able to swim to the bank
3.may 的用法
1)表示请求、可以、允许。
You may drive the tractor. 你可以开那台拖拉机。
2)当回答由may 引起的问题时，否定答语要用must not,表示"不许可"、"不应该"、"不行"。
May I come in?
Yes, you may.
No,you can't
No, you may not .
No ,you mustn't
No ,you'd better not.
3) may /might 推测性用法可能
He may be right.
He may not come today (可能不)
He may /might come tomorrow.
, 注意: 1只用于肯定和否定句中,不用于疑问句中。
2 might 比may可能性更小
He might get a job.
He may get a job.
3 may no 可能不 can not不可能
He may not come
He can't come
3)表建议(可和as well 连用)
You may(might)as well stay where you are.
你还是原地待着好。(may as well 有"还是......的好"的含义)
4)表祝愿
May you be happy!
might
1)表过去的"可能"和"允许"多用于间接引语。
She said that he might take her dictionary.
她说他可以拿她的词典去用。
除在间接引语中外，might一般不表示过去的"可能"与"许可"。表过去的"可能"可用could，表过去的"许可"可用were (was) allowed to。
2)表现在的"可能"，其可能性要比may小。
Electric irons could be dangerous; they might give you a severe shock.
电熨斗会有危险，它可能电着人。
3)may (might) + have +done 表示对过去发生行为的推测，含有"想必"、"也许是"的意思。
It may have been true. 这事也许是真的。
He might not have settled the question. 他可能尚未解决那个问题。
4.must 的主要用法。
1)表示必须、必要
We must do everything step by step .我们必须按部就班地做一切事情。
Why must you always bother me? 为什么你偏要打扰我呢。
2)must be + 表语的结构，通常表示猜测，含有"一定"之意。(只用在肯定句中)
He must be an honest boy. 他一定是个诚实的男孩。
This must be your room. 这一定是你的房间。
3)must 的否定式有两个：当回答由must引起的问题时，否定答复要用needn't或don't have to 表示"不必"、"无须"、"用不着"、"不一定"的意义。当表示"不应该"、"不许可"、"禁止"时，就用must not。
Must I go tomorrow?明天我必须去吗?
Yes, please.是的，请吧!
No , you needn't. 不，你不必去。
4)must +have +过去分词的结构，常用在肯定句中，表示对过去发生行为的推测，含有"一定"、"准是"的意思。否定和疑问句用can。
She must have studied English before.她以前一定学过英语。
5.have to的含义与must是很接近的,只是have to 比较强调客观需要，must着重说明主观看法。
I must clean the room.(主观想法)
I have to clean the room.(客观需要)
另外，have to 能用于更多时态：
We had to be there at ten .我们得在十点钟到那里。
We will have to reconsider the whole thing.
这一切我们将不得不重新加以考虑。
have to 的否定式：don't have to do 表示"不必做......"之意。
6.ought to 的用法
Ought to 后接动词原形，表义务，但不及must 那样具有信心，如：You don't look well. You ought to go to see the doctor.
你气色不好，应该去看病。
Ought to 用于否定句，其否定形式可缩略为oughtn't ，如：
You oughtn't to smoke so much. 你不应该抽这么多烟。
也可以用于疑问句，如：
Ought you to smoke so much?你应该抽这样多烟吗?
Ought to 在间接引语中表过去时形式不变，如：
He said you ought to tell the police.
他说你应该去报告警察。
7.shall的用法
1)用于第一人称征求对方的意见，如：
What shall I wear on the journey? 我路上穿什么好呢?
Shall we dance? 我们跳舞好吗?
2)shall 用于第二、三人称时表允诺，警告，命令，威胁(现已少见)，如：
She shall get her share. 她可以得到她的一份。
You shall have it back tomorrow.你明天可以将它拿回。
情态动词should一般不应被认为是情态动词shall的过去式，主要用法有：
1)用于第一人称疑问句中询问对方的意愿，但语气较委婉温和，如：
What should we do now? 我们现在该怎么办?
2)表示应该、必须，常与must 换用。例如：
We should (must) master a foreign language at least.
我们应当至少掌握一门外语。
3)"should+be+表语"的结构，表示推测或惊奇。例如：
They should be back by now. 他们现在应该回来了吧。
I am sorry that she should be so careless. 我感到遗憾她竟会那样粗心。
4)"should+have+过去分词"的结构，表示过去该做而实际上尚未做的动作或行为;其否定则表示发生了不应该发生的行为。其同义结构"ought to have +过去分词",表示过去"早应该"、"本当"之意，语气较强。例如：
I should have thought of that. 这一点我是应当想到的。(但没想到)
They should not have left so soon.他们不应当走得这么早。(但已走了)
5) 在"It is natural (strange, natural, necessary, surprised, impossible, important ) that......"句型中，主语从句中的谓语动词要用should +动词原形"表示"理所当然"、"奇怪"、"必要"、"惊异"等的意思。在lest(以免)、for fear (that) (以防)、in case(以备万一)等之后也要用should+动词原形;在advise, sugest, order, demand, request 等的从句中should+do"例如：
It is necessary that he(should) be sent there at once.
有必要马上派他到那里去。
It is strange that he should say so. 他会说这样的话真是奇怪。
Let us go at once lest we should be late for the train.
我们马上走吧，以免赶不上火车。
8..will和would的用法
1)表示意志，决心或愿望。例如：
Surely we will support all the people in the world in their struggle for peace. 我们一定要支持全世界人民争取和平的斗争。
He would not let me try it . 他不肯让我去试。
2)will表示经常性、习惯性、倾向性，would表示过去的习惯行为。
He will sit there hour after hour looking at the traffic go by.
他会经常一连几个小时坐在那儿观看来往的车辆。
He would come to see me when he was in Beijing.
他在北京时，常来看望我。
3)用于第二人称作主语的疑问句中，表示对对方的请求，would的语气比will委碗Would/will you kindly tell me the way to the station? 请问到火车站怎么走? 4)表可能性
This will be the book you are looking for.
这可能就是你要找的书。
She eould be about 60 when she died.
他死时大概60岁。
9. need和dare的用法
情态动词need 实义动词 need
现 You need (not) do You (don't) need to do
在
时 He need (not) do He needs (doesn't need) to do
过 You needed (didn't need) to do
去
时 He needed (didn't need) to do
将 You need (not) do You will (not) need to do
来
时 He need (not) do He will (not) need to do
句型时态动词
情态动词dare 实义动词 dare
肯定句现在时 dare to 少用 dare/dares to do
过去时 dare to 少用 dared to do
否定句现在时 daren't/dare not do do/does not dare (to) do
过去时 dared not do did not dare (to) do
疑问句现在时 Dare he do? Do you/Does he dear (to) do?
过去时 Dared he do? Did he dare (to) do
needn't have v-ed 表示过去做了某事，但没有做的必要，意为"本没必要..."。例如：
You needn't have waken me up; I don't have to go to work today
10.表推测的情态动词句子的反意疑问句
He must/may be in the room, isn't he?
He can't be in the room, is he?
He must have finished the work, hasn't he?
He may have done the work last night, didn't he?
：情态动词+行为动词进行式
情态动词+行为动词进行式(即情态动词+ be + v-ing形式)，表示推测或评论某动作现在是否正在进行。例如：
1)He must be playing basketball in the room.
2)She may be staying at home.
11.情态动词+行为动词完成进行式
情态动词+行为动词完成进行式(即情态动词+ have been + v-ing 形式)，表示推测或评论过去某动作是否正在进行或一直在进行。例如：
1)They should have been meeting to discuss the problem.
2)He may / might have been buying stamps in the post office when you saw him.
https://www.360docs.net/doc/8f8251468.html,ed to +v, be used to +v-ing和be used to +v
(1)used to +v意为"过去常常"，"过去一直";be used to +v-ing / n(名词)意为"习惯于";be used to +v意为"被用来(做某事)"。
(2)used to只表示过去，而be used to +v-ing / n可表示现在、过去或将来。例如：
1)He used to smoke. Now he doesn't.
2)He's quite used to hard work / working hard.
3)The knife is used to cut bread.
13.用作情态动词的其他短语
would rather, would sooner, would (just) as soon, had rather, had better, had sooner, can not but, may (just) as well等可用作情态动词。例如：
1)The soldier would sooner die than surrender.
2)The brave soldier would as soon die as yield to such an enemy.
3)I'd rather walk than take a bus.
4)If you don't like to swim, you may just as well stay at home.
注：这些短语后一般直接跟动词原形.would (had) rather, would (had) sooner, would (just) as soon后可跟that 引导的从句，that 常省去，从句要用虚拟语气。对现在和将来的假设用过去时，对过去的假设用过去完成时。例如：
1)I would rather you came on Sunday.
2)I would sooner you hadn't asked me to speak yesterday.
三. 巩固练习:
1. _____ you ready?
(A) Are (B) Have (C) Will (D) Can
2. ____ here early?
(A) Will he (B) Was he (C) Did he be (D) Were he
3. I ___ happy about the price of eggs.
(A) am't (B) am not (C) do not (D) won't
4. Since last year I____ him only once.
(A) have seen (B) have been seeing (C) see (D) was seeing
5. Donald ___ sixteen tomorrow.
(A) is being (B) going to be (C) shall be (D) will be
6. I ___ the story at all.
(A) don't like (B) like (C) am fond of (D) would like
7. I would rather ___ than play now.
(A) to study (B)am studying (C) study (D) studied
8. I'd rather you ___ anything about it for the time being.
(A) do (B) didn't do (C) don't (D) didn't
9. The car___much money.
(A) not cost (B) not have cost (C) isn't cost (D) didn't cost
10. I ___ like to eat fish.
(A) am (B) have (C) do (D) be
11. ___ repeat the question?
(A) Shall I (B) Will I (C)Would you like that I (D) Do you want that I
12. My teacher knows more than ___.
(A) my uncle knows (B) my uncle does
(C) they know (D)they don't know
13. He___to meet us at the station, but didn't see us.
(A) did go (B) did went (C) goes (D) had
14. Not only ____us light.
(A) does the sun give (B) the sun gives
(C) gives the sun (D) the sun does give
15. ____ you tell me what has happened?
(A) May (B) Must (C) Can (D) Could
16. Anne___tomorrow.
(A) can sing (B) can to sing (C) is going sing (D) going to sing
17. You___hand it in at once, you may hand it in tomorrow.
(A) needn't (B) may not (C) can't (D) must not
18. Tell the boy that he ___ in the river.
(A) swims (B) swim (C) swimming (D) to swim
19. Joan___play on Saturday.
(A) going to (B) can (C) is going (D) can to
20. Susan and I can go to the lecture ___.
(A) but neither can Charles (B) and so Charies can
(C) but Charles can't (D) and Charles also can
四.答案
1. (A) 2, (B) 3. (B) 4. (A) 5, (D) 6, (A) 7. (C) 8. (B) 9. (9) 10, (C)
11. (A) 12. (B) 13. (A) 14. (A) 15. (D) 16. (A) 17. (A) 18. (B) 19. (B) 20, (C)
高中英语语法大全助动词精讲精练
2013-06-04 10:43 来源：巨人网·英语整理作者：佚名
?[
?标签：
?高中英语语法
?]
导语：高中英语语法是英语学习的关键环节，学好英语语法能够全面提高英语听力、英语阅读、英语单选完形、以及英语写作。下面是小编为大家整理的高中英语语法大全，助动词精讲精练，帮助大家自主复习高中英语语法。
一.概念:
助动词是帮助主要动词构成各种时态,语态,语气以及否定或疑问结构的动词.助动词分为时态助动词和结构助动词两种.
二.相关知识点精讲:
1. 助动词be的用法
1) be +现在分词，构成进行时态。例如：
They are having a meeting. 他们正在开会。
English is becoming more and more important. 英语现在越来越重要。
2) be + 过去分词，构成被动语态。例如：
The window was broken by Tom.. 窗户是汤姆打碎的。
English is taught throughout the world. 世界各地都教英语。
3) be + 动词不定式，可表示下列内容：
a. 表示最近、未来的计划或安排。例如：
He is to go to New York next week.. 他下周要去纽约。
We are to teach the freshmen. 我们要教新生。
说明：这种用法也可以说成是一种将来时态表达法。
b. 表示命令。例如：
You are to explain this. 对此你要做出解释。
He is to come to the office this afternoon. 要他今天下午来办公室。
c. 征求意见。例如：
How am I to answer him? 我该怎样答复他?
Who is to go there? 谁该去那儿呢?
d. 表示相约、商定。例如：
We are to meet at the school gate at seven tomorrow morning. 我们明天早晨7点在校门口集合。
2. 助动词have的用法
1)have +过去分词，构成完成时态。例如：
He has left for London. 他已去了伦敦。
By the end of last month, they had finished half of their work. 上月未为止，他们已经完成工作的一半。
2)have + been +现在分词，构成完成进行时。例如：
I have been studying English for ten years. 我一直在学英语，已达十年之久。
3)have +been +过去分词，构成完成式被动语态。例如：
English has been taught in China for many years. 中国教英语已经多年。
3.助动词do 的用法
1)构成一般疑问句。例如：
Do you want to pass the CET? 你想通过大学英语测试吗?
Did you study German? 你们学过德语吗?
2)do + not 构成否定句。例如：
I do not want to be criticized. 我不想挨批评。
He doesn't like to study. 他不想学习。
In the past, many students did not know the importance of English.
过去，好多学生不知道英语的重要性。
3) 构成否定祈使句。例如：
Don't go there. 不要去那里。
Don't be so absent-minded. 不要这么心不在焉。
说明：构成否定祈使句只用do，不用did和does。
4)放在动词原形前，加强该动词的语气。例如：
Do come to my birthday party. 一定来参加我的生日宴会。
I did go there. 我确实去那儿了。
I do miss you. 我确实想你。
5)用于倒装句。例如：
Never did I hear of such a thing. 我从未听说过这样的事情。
Only when we begin our college life do we realize the importance of English. 进了大学以后，我们才认识到英语的重要性。
说明：引导此类倒装句的副词有never, seldom, rarely, little, only, so, well 等。
6)用作代动词。例如：
---- Do you like Beijing? --你喜欢北京吗?
---- Yes, I do. --是的，喜欢。(do用作代动词，代替like Beijing.)
He knows how to drive a car, doesn't he? 他知道如何开车，对吧?
4. 助动词shall和will的用法
shall和will作为助动词可以与动词原形一起构成一般将来时。例如：
I shall study harder at English. 我将更加努力地学习英语。
He will go to Shanghai. 他要去上海。
说明：在过去的语法中，语法学家说shall用于第一人称，will 只用于第二、第三人称。现在，尤其是在口语中，will常用于第一人称，但shall只用于第一人称，如用于第二、第三人称，就失去助动词的意义，已变为情态动词，试比较:
He shall come. 他必须来。(shall有命令的意味。)
He will come. 他要来。(will只与动词原形构成一般将来时。)
5.助动词should, would的用法
1)should无词义，只是shall的过去形式，与动词原形构成过去将来时，只用于第一人称。例如：
I telephoned him yesterday to ask what I should do next week. 我昨天给他打电话，问他我下周干什么。
比较："What shall I do next week?" I asked. "我下周干什么?"我问道。
可以说，shall变成间接引语时，变成了should。
2) would也无词义，是will的过去形式，与动词原形构成过去将来时，用于第二、第三人称。例如：
He said he would come. 他说他要来。
比较："I will go," he said. 他说："我要去那儿。"变成间接引语，就成了He said he would come。原来的will变成would，go变成了come.。
6. 短语动词
动词加小品构成的起动词作用的短语叫短语动词。例如：
Turn off the radio. 把收音机关上。(turn off是短语动词)
短语动词的构成基本有下列几种：
1)动词+副词，如：black out;
2)动词+介词，如：look into;
3)动词+副词+介词，如：look forward to。构成短语动词的副词和介词都统称为小品词
三.巩固练习
1.If it is fine tomorrow, we ______ a football match.
a. have
b. will have
c. has
d. shall has
2.When he was at school, he ______ early and take a walk before breakfast.
a. will rise
b. shall rise b. should rise would rise
3.In the past 30 years China ______ great advances in the socialist revolution and socialist construction.
a. has made
b. have made
c. had made
d. having made
4.I ______ go to bed until I ______ finished my work.
a. don't/had
b. didn't/have
c. didn't/had
d. don't/have
5.______ you think he ______ back by dinner time?
a. Do/have come
b. Did/will have come
c. Does/will come
d. Do/will have come
6.He said that he dropped his bag when he ______ for the bus.
a. was runing
b. was running
c. were running
d. is running
7.No sooner ______ he arrived home than he ______ to start on another journey.
a. has/was asked
b. have/were asked
c. had/is asked
d. had/was asked
8."______ you give me a room for the night?" I asked on arriving at the hotel.
a. Should
b. Can
c. Might
d. May
9.There are nine of them, so ______ get into the car at the same time.
a. they may not at all
b. all they may not
c. they can't all
d. all they can't
10."We didn't see him at the lecture yesterday." "He ______ it."
a. mustn't attend
b. cannot have attended
c. would have not attended
d. needn't have attended
11."You realize that you were driving at 100 mph, don't you?"
"No, officer. I ______. This car can't do more than 80."
a. didn't need to be
b. may not have been
c. couldn't have been
d. needn't have been
12.he was a good runner so he ______ escape from the police.
a. might
b. succeeded to
c. would
d. was able to
13.If they ______, our plan will fall flat.
a. are co-operating
b. had not co-operated
c. won't co-operate
d. didn't
co-operate
14.I hoped ______ my letter.
a. her to answer
b. that she would answer
c. that she answers
d. her answering
15.He ______ live in the country than in the city.
a. prefers
b. likes to
c. had better
d. would rather
16.______ to see a film with us today?
a. Did you like
b. Would you like
c. Will you like
d. Have you liked
语法知识—情态动词的知识点总复习附解析
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must do sth 一定... could/may/might do sth 可能... can’t do sth 一定不/不可能... You must be hungry, you haven’t had anything since yesterday. They must be twins. They look quite the same. That can’t be Mary. She is in hospital. You can’t be hungry, you have just had lunch. There is someone outside. Who can it be? Can he still be alive after these years? He is not at home, he could/may/might be at school. Anna could/may/might know her address. He said he could/may/might be a little late. I guess he could/may/might come tomorrow. 2.must be doing sth 一定在做某事 could/may/might be doing sth 可能在做某事 can’t be doing sth一定不在做某事 There is a lot of noise from next door. They must be having a party. The police are stopping all the cars. They must be looking for the bad man. What can she be doing now? She can’t be telling the truth.
高考英语新情态动词知识点知识点训练
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(完整版)必修三unit2语法讲解情态动词用法
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最新英语语法情态动词归纳总结
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高中英语语法精讲精练
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高中英语语法精讲精练 (一) 倒装句与强调结构 (2) (二) 定语从句 (8) (三) 分词与动名词 (13) (四) 动词不定式 (19) (五) 情态动词 (25) (六) 虚拟语气 (31) (八) 名词性从句和状语从句 (37) (九)冠词、名词 (43) (十)代词、形容词和副词 (49) 答案 (55) 17
(一) 倒装句与强调结构 1._______ smoking, he would not have got cancer in the lung. A. Was he given up B. Had he given up C. Did he give up D. If he gave up 2. Only when he had done it _______ that he had made a mistake. A. he then realized B. did he realize C. before D. he realized 3. Not until he got off the bus ______ that he had got his wallet stolen. A. he found B. did he find C. he had found D. had he found 4. Hardly ______ when it started raining. 17
A. the game had begun B. the game began C. did the game begin D. had the game begun 5. Nowhere else in the world _____ more friendly people than in China. A. you will find B. can you be able to find C. you may have found D. can you find 6. ______ did the students realize they were mistaken. A. It was until B. It was not until then C. Not until then D. Not until 7. Not only ______ a promise, but he also kept it. 17
浅谈情态动词用法难点
浅谈情态动词用法难点 下面是同学们在使用情态动词时经常出现的问题，也是情态动词中的难点，而且又是近来高考的热点。 一、要注意一些同义、近义的情态动词的区别 1 . 表示可能性的can’t 与 may not 的区别。 can‘t 常常表示“不可能”、“一定不”，may not 表示“可能不、或许不”。很明显，can’t 比 may not 语气强，把握性大。如： The man standing over there _____ be Jack . He‘s go ne to Hong Kong . A . mustn’t B . can‘t C . won’t D . may not 说话者既然知道“He‘s gone to Hong Kong”，那么对“The man 不是Jack”一定满有把握，故正确选项为 B。 2 . 表示“能够”意义的 can 与 be able to 的区别。 凡表示“经过努力、设法做成某事”时不用 can，须用 be able to。如： The fire spread through the hotel very quickly , but everyone _____ get out . ( NMET97 ) A . had to B . would C . could D . was able to 句意为：大火弥漫整个旅馆，但人位学是设法逃了出来。故正确选项为D。 3 . 表示“不能”意义的can’t 与mustn‘t 的区别。 can’t 表示“不能”，是指无能力；mustn‘t 表示“不能”则指的是“禁止，不允许”。在口语里，can’t 也可表示“禁止，不允许”，但语气不如mustn‘t 强。如： ( 1 ) 他年纪小，不能上学。 【正】He is so young that he can’t go to school . ( 2 ) 里边正在开会，不能吵闹。 【正】There‘s meeting inside . You mustn’t make any noise . 【误】There is a meeting inside . You can‘t m ake any noise . 二、要注意几个使用的特定范围 1 . 表示推测时，can 不能用在肯定句中 ( 但 could 能 ) ；may 和 might 不能用在疑问句中。如： ( 1 ) Peter _____ come with us tonight , but he isn’t very sure yet . ( MET93 ) A . must B . may C . can D . will 句意为：Peter 有可能同我们一块儿来，但还不肯定。正确选项为 B。 ( 2 ) _____ it be a sunny day tomorrow? A . Can B . May C . Shall D . Should
情态动词语法讲解
Modal Verbs 情态动词有can (could), may (might), must (must), have to, shall (should), will (would), need (need), dare (dared), ought to 等。情态动词无人称和数的变化。它不能单独使用，必须跟其后的动词原形构成谓语。情态动词的具体用法如下： 一、can, could 1、表示能力。 a. Can you speak English? b. Can you finish this work tonight? c. Man cannot live without air. Note:
(1) can表示能力时，可用be able to 代替。 a. I’ll not be able to come this afternoon. (2) 当我们要表示“某件事情已经 成功”时，应用was/ were able to , 不能用could a. He saw well and he was able to swim to the river when the flood happened. b. He was able to go to the party yesterday evening and he enjoyed himself very much. 2、表示客观可能性
a. People who live near airports can have their hearing harmed. b. The boy can sometimes be very naughty. （表示某人或某物一时的情况，“有时会。。。”） c. The invention can be improve d. d. Even experts can make mistakes. e. He can’t be in Beijing now because I saw him a moment ago. f. He had a lot of work to do last night, so he couldn’t have gone to see a film. Note: 在肯定句中用can表示可能性时，其含义是理论上的可能性，不表示
英语语法总结：情态动词的使用
英语语法总结：情态动词的使用 情态动词的使用 1）情态动词can（能够），must（必须），may（可以）结构：主语+can/must/may+动词原型 He can make the tea. Sally can air the room. We can speak English. ★变疑问句将情态动词移到句首 Can he make the tea? Can Sally air the room? Can we speak English? ★变否定句在情态动词后面加not
He cannot make the tea. Sally cannot air the room. We cannot speak English. ★肯定回答及否定回答 Yes, he can. / No, he cannot. Yes, she can. /?No, she cannot. Yes, we can. / No, we cannot. ★特殊疑问句：（必背） What can you do? 注意：情态动词的句子没有第三人称单数的变化，不要在情态动词或动词后面加s。
2）must/have to的区别 must 表示必须，是主观上觉得应该做，have to是不得不，是由于客观条件逼迫的必要要做 must 只能用在表示现在和将来的句子里，而have to do可以用在任何时态 3）must, may, might表示猜测： ·must do 表示对现在事实的猜测 ·must have done表示对过去事实的猜测 ·must have been doing 表示对过去正在进行的事实的猜测 ·may/might do, may/might have done表示没有任何事实依据的猜测，might的可能性更小。 4）can't/couldn't 表示不可能
最高考高考英语语法精讲精练专题七情态动词和虚拟语气常考点
最高考届高考英语语法精讲精练-专题七-情态动词和虚拟语气常考点
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专题七情态动词和虚拟语气常考点 近两年考查情态动词和虚拟语气的频率呈上升趋势。从整体上把握情态动词的语法特征和语义特征，能够准确理解不同情态动词的细微差异，认真区别具有相同功能、意思相近的情态动词的用法，在真实的交际情景中印证和领悟情态动词的用法和特征。 1情态动词所表示的多种含义 1. can和could的用法 ①表示能力。如： I can run fast. ②表示客观可能性。如： An experienced driver can have an accident at times. ③表示请求和允许。用could 语气更委婉。如： —Can/Could I go now? —Yes，you can. ④表示猜测、惊异、怀疑、不相信的态度(主要用于否定句、疑问句或惊叹句中)。如： Can this be true?
How can you be so careless! This cannot be done by him. 2. may和might的用法 ①表示许可。如： You may drive the car. —May/Might I use your pen? —No，you mustn't. ②用于祈使句中表示祝愿。如： May you succeed! ③表示推测、可能(疑问句不能用于此意)。表推测的might并不是指过去时间，而表示比may把握性略小些。如： He may be very busy now. ④用于表示目的或让步状语从句中。如： No matter what difficulties you may come across，you shouldn't give up. 3. will和would的用法 ①用于各种人称，表示“意志”“意愿”“决心”等。如： I told her to stop crying，but she just would not listen. ②用于第二人称的疑问句，表示说话人向对方提出请求。用would比用will语气更客气。如： Will/Would you please keep the door open? ③表示真理或习惯，意为“惯于，总是”。如： She will listen to music alone in her room for hours. He would get up early when he lived in the country. 4. should的用法 ①表示现在或将来的责任或义务，意为“应该，应当”，这时它可以和 ought to，be supposed to 互换使用。如： You should(＝are supposed to ) complete your test in time. ②表示有较大可能实现的猜测、推论，通常意为“可能；总该……吧”，相当于 be expected to。如： They should be home by now，I think. ③用于第一人称时可以表示说话人的一种谦逊、客气、委婉的语气。如： I should think it would be better to try it again. ④用在条件状语从句中，表示语气较强的假设，意为“万一”，这时也可将should置于从句之首，即将should放在主语前面，而省略从属连词if，主句谓语却不一定用虚拟语气。如： Should I (＝If I should) be free tomorrow I will come. ⑤用来表示意外、惊喜或者在说话人看来是不可思议的。尤其在以 why，who，how 等开头的修辞疑问句或某些感叹句中常常意为“竟会，居然”。如： A gentleman like him should be rude to a lady! ⑥用于虚拟语气句中(略)。 5. ought to的用法 表示应该、推测，相当于should。如： You ought to take care of him. 6. shall的用法
英语情态动词难点、易错点含答案
英语情态动词难点、易错点含答案 一、初中英语情态动词 1．—Mum, I play football this afternoon? —Sure, but you finish your homework first. A. may; could B. can; must C. can; mustn't D. may; can't 【答案】 B 【解析】【分析】句意：－妈妈，今天下午我能踢足球吗？－当然，但是你必须先完成作业。前句提请求，can,may都可以；后句，由sure可知后句用肯定回答。Could表示一种委婉的语气；must表示主观愿望：必须。妈妈要求孩子“必须”先完成作业。故选B。 【点评】考查情态动词辨析，may表示请求时候的回答用语。 2．—How amazing this robot is! —Wow, it has video cameras in its eyes, so it “see” and intera ct with people. A. may B. can C. must D. should 【答案】 B 【解析】【分析】句意：—这个机器人多么惊人啊！—哇，在它的眼睛里有摄像机，因此它能看见和人打交道。A. may 可以，可能；表示许可，B. can 能；表示能力，C. must 必须；D. should应该；根据it has video cameras in its eyes,可知是有能力看见，故选B。 【点评】考查情态动词辨析。熟记情态动词的含义和用法。 3．A hard-working man ______ become a great scientist, but a great scientist _______ be a hard-working man. A. can't; can B. may not; must C. can't; must D. may not; can 【答案】 B 【解析】【分析】句意：一个勤奋的人可能不会成为一位伟大的科学家，但是一位伟大的科学家一定是一个勤奋的人。can't不可能，不会；can可能，能，会；may not 可能不；must 必须，一定；结合句意，可知，第一个空为“可能不”，第二个空为“一定”，故答案为B。 【点评】考查情态动词。掌握情态动词表推测时的意义和用法。 4．Look at t he sign! It says “No Smoking!” You ________ smoke here. It's dangerous. A. mustn't B. ought not to C. needn't D. don't have to 【答案】 A 【解析】【分析】句意：看这个标志！上面写道“禁止吸烟！“你不能抽烟。这是危险的。 A.mustn't 禁止，不允许； B.ought not to不应该，不应当； C.needn't不必； D.don't have to 不必。根据“No Smoking!”可知此处禁止吸烟，故答案为A。 【点评】考查情态动词。掌握情态动词的意义和用法。 5．—Shall we meet at the station at 9 a.m.?