1. 英语中情态动词的用法归纳总结
1) may(might) have + done sth, can (could) have + done sth 表示过去，推测过去时间里可能发生的事情。
Philip may (might) have been hurt seriously in the car accident.
Philip can (could) have been hurt seriously in the car accident.
2) must have +done sth，对过去时间里可能发生的事情的推测，语气较强，具有"肯定"，"谅必"的意思。
---Linda has gone to work, but her bicycle is still here.
---She must have gone by bus.
3) ought to have done sth, should have done sth
本应该做某事，而事实上并没有做。否定句表示"不该做某事而做了"。
You ought to (should) have been more careful in this experiment.
He ought not to have thrown the old clothes away.（事实上已扔了。）
ought to 在语气上比should 要强。
4) needn't have done sth 本没必要做某事
I dressed very warmly for the trip, but I needn't have done so. The weather was hot.
5) would like to have done sth 本打算做某事
I would like to have read the article, but I was very busy then.
2. 初中情态动词的具体用法总结
一、can的用法：
1. (表示能力、功能)能,会
The classroom can seat thirty students.
这教室能坐三十位学生。
June can drive now.
琼现在会开车了。
2. (表示可能性)可能,可能会
I think the work can be completed ahead of time.
我认为这项工作能提前完成。
3. (表示允许、请求)可以
You can't take the book out of the room.
你不可以将这本书拿出室外。
Can I use your pen?
我可以用一下你的笔吗?
4. (表示命令)必须
If you won't keep quiet you can get out.
你如不保持安静,就请你走。
5. (表示偶然发生的可能性)有时会
It can be quite windy there, especially in spring.
那里有时容易刮风,特别在春季。
6. (表示惊讶)究竟;竟至于
What can it possibly be?
到底那是怎么一回事?
二、could的用法
can的过去式；
（用于虚拟语气，表示与事实相反的设想）能；可以；
（表示可能性）可能；
（用于婉转语气）能，可以
三、may的用法
1.表示请求和允许，意思是：可以
He may come if he likes. 如果他想来，可以来
2.表示祝愿，意思是：祝…，（但愿）。
May the friendship between our two peoples last forever. 祝两国人民的友谊万古长青。
3.表示推测，意思是：可能（会），或许（会）。
It may rain this evening. You'd better take an umbrella. 今晚可能要下雨，你最好带上雨伞。
四、must的用法
1.表“必须”。
You must talk to them about their study.你必须同他们谈谈关于他们学习的事。
2.在否定结构中表不许。
You mustn't leave here.你不能离开这儿。
3.表坚定的建议。
You must come and see us as soon as you get to Shanghai.一到上海你得马上来看我们。
4.表推测，暗含有很大的可能性，用在肯定句。
He must be ill. He looks so pale.他肯定是病了。他的脸色那么苍白。
注意：
may 暗含的可能性较小。must 暗含的可能性较大。否定的猜测用can't
The baby can't be ill. He is so active.那宝宝不大可能是病了。他那么活跃。
五、might的用法
might表示的可能性太小，没有足够的说服力去职责别人。
can, could 之间的区别，和 may,might 之间的区别在于，虚拟句和过去时态用后者，表示的可能性比原词小，但大部分时候2者可以互换，不会产生歧义或者对表述造成干扰。
六、should的用法
1.should 作为助动词 shall 的过去式，可以在间接引语中与第一人称主语搭配，表示过去将来时间。
2.should 作为情态动词，通常用来表示现在或将来的责任或义务，译作“应该”、“应当”，这时它可以和 ought to， be supposed to 互换使用。例如：
You should （= are supposed to ） complete your test in time.
你们应该按时做完你们的实验。
3.should 作为情态动词，可以用在条件状语从句中，表示语气较强的假设，译作“万一”、“竟然”，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.
If it should rain tomorrow， I wouldn't go. （= Should it rain tomorrow， I wouldn't go.）
万一明天天下雨，我就不去了。
七、 would的用法
1.would是will的过去式，Would you like～？
表示请求、劝说，是很客气的说法。
Would you like a cup of tea？
您愿意喝杯茶吗？
2.主语+would like to～
表示“想要……”的意思上，与…want to～意思一 样，但用此句型较客气。
I want to ask you a question.
3.最基本的虚拟语气句型:
主句用would/ should/ could/ might +动词原形。
八。ought to的用法
ought to 是一个可以加上to 的情态动词其意思与should是一样的,但是ought to 不能用于虚拟语气中表示推测,而should可以
ought to与should意思接近，大多数情况下二者可以互换，但是should谈的是自己的主观看法，ought to则更多反映客观情况，在谈到法律、义务和规定时使用。
如： We should／ought to help each other and learn from each other in our work．
She is your mother, so you ought to support her．
We ought to go and see Mary tomorrow, but I don’t think we will．
3. 初中英语情态动词的用法
非常全，自己总结的哦！！！
Grammar—Modal-verb
Ⅰ.情态动词
一、can/could
1.表示能力时
was/were able to 具体做成某件事（=managed to do ）
could 只表示能够
2.can+感官动词
can taste/ see/ hear/ smell/ feel/ believe/ decide/ understand
3.can表示惊讶、不敢相信
Eg: How can you do like this?
4.cannot but do
cannot choose but do
cannot help but do
Eg: I cannot but feel sorry for her.
I cannot choose but follow her advice.
5.cannot… over/ enough/ too …都不过分；越…越好
Eg: You cannot over praise him.
6.理论上的可能性：
Eg: Accidents can happen on such rainy days.
Anyone can make mistakes.
The temperature can fall to -40℃.
7.can’t 表示否定推测：
Eg: It can’t be him, for he has gone to Paris yesterday.不能用mustn’t
8.can/could 表示允许、请求
Can/May I help you?
I wonder if I can/could do sth.(此处could不表示时态)
-Can/Could/May I use…?
-Yes, you can/may.
-No, you can’t/ may not/ mustn’t.(题目选项中如果表否定允许有mustn’t就选mustn’t)
You’d better not.(may问一般不用may回答)
I’d rather you didn’t.
9.can/could (not) have done
(1)本能做、没能够
(2)过去可能会做、过去不可能做
Eg: He could have killed Harry Potter, but he didn’t.（过去本能够）
He couldn’t have killed him 17 years ago, and he cannot do it now, either.（过去没能够）
Can he have gone to his aunt’s ?(过去可能会做)
He cannot have forgotten it. （过去不可能）
二、may/might
1.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：只用于肯定和否定句中,不用于疑问句中
2.may not 可能不 can not不可能
He may not come He can’t come
3.may as well最好 may well理应，有足够的理由
You may（might）as well stay where you are.
-Shall we walk?
-We may as well.
4.表祝愿 May you be happy!
5.may (might) + have +done 表示对过去发生行为的推测，也许或许已经做
It may have been true.
He might not have settled the question.
He may not have finished the work.
I think he may have gone to bed.
6.may表示目的
Eg: You must go to bed early so that you can/may catch the train.
7.表示让步
Eg: However hard he may try, he cannot get the first place.
三、must
1. 表示义务意为“必须”（主观意志）
Eg: We must do everything step by step.
You mustn’t talk to her like that.
-Must we hand in our exercise—books now?
-No, you needn’t. / No, you don’t have to.
2.肯定推测（绝对不能用于否定推测！！！！否定推测用can’t/couldn’t）
Eg: He must be ill. He looks so pale.
She’s wearing a diamond necklace. She must have a lot of money.
3.偏要做，偏偏
Eg: Why must rain on Friday?
Must you speak so loudly?
If you must smoke, please go out!
4.must have done想必准时一定做了某事，否定是can’t/couldn’t have done
5. didn’t need to have done 过去没有必要做，具体是否做不强调
needn’t have done 本不必却做了
四、shall
1.在肯定句、否定句中表示命令、警告、威胁、许诺以及法律、规定、规章制度
Eg: You shall leave the room at once, and he shall, too.
It has been announced that candidates shall remain in their seat until all the papers have been collected.
-when can I get my computer back?
-Well, you shall have it on Saturday.
He shall be punished if he breaks the rule.
You should return the book to the library tomorrow.
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）
2.表示请求、允许 Shall he/ she/ they/ I/ we……？
Eg: Shall I open the window?
Shall the driver wait outside?
五、should
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
What should we do now?
2.表示应该、必须，常与must 换用。（不常见）
We should (must) master a foreign language at least.
3.“should+be+表语”的结构，表示推测或惊奇。
They should be back by now.
I am sorry that she should be so careless.
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。
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 +do”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 do;在advise, suggest, order, demand, request 等的从句中同样should do
It is necessary that he(should) be sent there at once.
It is strange that he should say so.
Let us go at once lest we should be late for the train.
6. Why/How should 结构表示说话人对某事不能理解，感到意外惊异等意思，意为“竟会”
Eg: Why should you be so late today？
How should I know? 我怎么会知道？（意为：我不知道）
六、will/would
1.表示意志，决心或愿望。
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。
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.will表示经常性、习惯性、倾向性，would表示过去的习惯行为。
He would come to see me when he was in Beijing.他在北京时，常来看望我。
Every time she was in trouble, she would go to him for help.
Fish will die out of water. 鱼离开水就不能活。
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？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？
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？
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 would be about 60 when she died.他死时大概60岁。
5.won’t拟人化
Eg: The door won’t open.
The car won’t start.
七、need
情态动词need 实意动词need
现
在
时 You need (not) do
He need (not) do You (don’t) need to do
He needs (doesn’t need) to do
过
去
时
You needed (didn’t need) to do
He needed (didn’t need) to do
将
来
时 You need (not) do
He need (not) do You will (not) need to do
He will (not) need to do
八、dare
句型
时态
情态动词dare
实义动词 dare
肯
定
句 现在时
dare to
dare/dares to do
过去时 dare to
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
九、宁愿做某事
would rather do
would rather do than do
would do rather than do
would rather sb. did
prefer to do
prefer to do rather than do
prefer doing to doing
Ⅱ.情态动词表推测
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）He must/may/might know the answer to this question?
他一定/可能/也许知道这个问题的答案。
（2）It is cold in the room. They must have turned off the heating.
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), may not/might not(可能不)。
（1）It can’t/couldn’t be the headmaster. He has gone to America.
这不可能是校长，他去美国了。
（2）He may not/might not know the scientist. 他也许不认识那位科学家。
3.疑问句中用can/could (能……?)。
（1）Could he have finished the task? 他可能把任务完成了吗？
（2）Can he be at home now? 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）She must / may / might / could arrive before 5. 5:00前她一定/可能/也许到。
（2）She must/may/might/could walk miles and miles among the hills without meeting anyone.
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 +be doing”或“情态动词 + 动词原形”。
（1）He must / may / might / could be listening to the radio now.
他一定/可能/也许正在听收音机。
（2）He can’t ( couldn’t ) / may ( might ) not be at home at this time.
这个时候他不可能/可能不在家。
（3）Mr. Bush is on time for everything .How can ( could ) he be late for the opening ceremony ?
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）It must / may / might / could have rained last night .The ground is wet.
地湿了，昨晚肯定/可能/也许下雨了。
（2）The door was locked. He can ( could ) not / may ( might ) not have been at home .
门锁着，他不可能/可能不在家。
（3）Can / Could he have gotten the book？
难道他找到书了吗？
注：情态动词 should /ought to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’s seven o’clock. Jack should/ought to be here at any moment.
现在七点钟了，杰克理应随时到达。（推测）
（5）She should / ought to have attended your birthday party, but she had to look after her mother in hospital. （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）Tom should not /ought not to have told me your secret, but he meant no harm. （虚拟）
汤姆本不该告诉我你的秘密，可是他并无恶意。
Ⅲ.must反意疑问句
—应该 mustn’t
—必须 needn’t
—推测 还原成不含推测的句子一致
Eg: You must be tired, aren’t you?
You must have heard of it, haven’t you?
He can’t have gone out yesterday, didn’t he?
He can’t have gone out yet, has he?
4. 初中英语情态动词用法与归纳
1
中学英语情态动词用法归纳与练习
A
can / could = be able to
1
表示能力两种时态
can (could)
，其他时态要用
be able to
的形式
He can speak French.
Was/were able to
可以表示成功做成某事的含义
* managed to do / succeeded in doing
2
表示请求或许可
Could
比
Can
更加客气
Can I go now? Y
es, you can.
3
表示推测或可能性，常用于否定句和疑问句
Today is Sunday. He can't be at school.
Could have done
可用在肯定句中表示过去存在的可能性
* may have done
She could have gone out with some friends yesterday
.
Could have done
可以表示虚拟语气
,
某事可能发生（并没有发生）
It was silly to throw the TV out of the window. It could have hit somebody.
B may and might
的用法
1
表示请求和允许
类似用法
can could(
更加口语化
)
May I watch TV now?
Y
es, you may
.
2
表示可能性
;
猜测
might
比
may
更加不确定
may/might have done
对过去的揣测
*
May not
可能不；不可能；一定不可
3
表示祝愿
Wish you success! May you succeed!*
C must and have to
1
表示必须；一定要
可以用
have to
代替
must
现在；将来的必须
而且是主观看法
*
have to
有多种时态
而且强调客观情况
I really must stop smoking now.
I had to leave early because I wasn’t
feeling well.
Must I come here?
Y
es, you must. No, you needn’t. needn’t / don’t have to
must not
2 must
表示推测
意思非常肯定
“
一定是
”“
一定会
”
It must be raining outside.
Must have done
对过去
/
完成的推测
*
must have done, didn’t / hasn’t
Must be doing
推测现在正在进行
He must have gone over the article, hasn’t he?
D need and dare
过去时
dared
情态动词和实意动词的区别
A
人称变化
B do / to do
C
直接否定
/
间接否定
can
work
Need /dare
肯定句中，实义动词
She needs to do it. I dare to do it.
使用在否定句
,
疑问句中，情态动词，实义动词。
I dare not do it.
I don’t dare (to) do it.
I need not do it.
I don’t need to do it.
1 need
情态动词
无时态；人称的变化
多用于疑问句和否定句
Y
ou needn’t try to explain.
Needn’t = don’t have to
Needn’t have done
sth
过去本不必做某事
*
虚拟语气
3 dare
情态动词
过去时
dared
无人称的变化
多用在疑问句和否定句
Dare he tell them what he knows?
4 dare
实义动词
有时态；
人称的变化后接
to do
用于疑问句和否定句时
其后的
to
有时可省
略
Do you dare (to) jump off the high wall?
E will and would
1
表示征求对方
(
第二人称
)
意见或询问对方意愿
would
比
will
更客气委婉
Would
与
used to
的区别
*
Would
只能用来表示重复的动作而不能表示状态
Used to
既可表示动作也可表示状态
,
强调现在不如此
He used to be a university student.
2 shall
肯定句中
表示说话人强烈的感情
允许，命令，禁止和威胁
*
2
These rules shall be obeyed.
4 should
表示劝告，建议
= ought to
应该
You should wash your hands first.
Should
主要表示主观看法
*
Ought to
客观情况
法律、规定、义务的使用
5. 英语情态动词用法与归纳
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。
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。
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。
情态动词的用法:
can (could) 表示说话人能,可以,同意,准许,以及
客观条件许可,could 为 can 的过去式。
Must 必须,应该,一定,准是, 表示说话人认为有必要做某事, 命令, 要求别人做某事以及对事物的推测。
must 用来指一般现在时和一般将来时, 过去式可用 have to 的过去式代替。
must + have + 过去分词,表示现在对过去事物的推测。
must 和 have to 的区别: must 表示说话人的主观思想, have to 表示客观需要。
need 是一个情态动词, 他的用法完全和其他情态动词一样, 但 need 还可当作实义动词使用, 这时 need 就象其他动词一样,有第三人称,单复数, 后面加带 to 的动词等特性。
needn't + have + 过去分词 表示过去做了没必要做的事情。
dare 除用作情态动词外,更多的是当实义动词使用, 用法同实义动词一样,要考虑人称,单复数,时态等。
ought 应当,应该 后面跟带有 to 的动词不定式。
ought + to have done 句型。指过去动作,表示一件事情该做而未做。
ought not to have done 句型。表示一件不该做的事情却做了。
will (would)决心,愿望。 would 为 will 的过去式,
will, would用于疑问句表示说话人向对方提出请求或询问,用 would 比 will 更婉转,客气。
Shall, should表示命令,警告,允诺,征求,劝告,建议惊奇。
have to,不得不,必须,表示客观条件只能如此, 而must 则表示主观思想必须
6. 急求有关英语中情态动词的用法和总结。谢谢
情态动词的用法:
can (could) 表示说话人能,可以,同意,准许,以及
客观条件许可,could 为 can 的过去式。
Must 必须,应该,一定,准是, 表示说话人认为有必要做某事, 命令, 要求别人做某事以及对事物的推测。
must 用来指一般现在时和一般将来时, 过去式可用 have to 的过去式代替。
must + have + 过去分词,表示现在对过去事物的推测。
must 和 have to 的区别: must 表示说话人的主观思想, have to 表示客观需要。
need 是一个情态动词, 他的用法完全和其他情态动词一样, 但 need 还可当作实义动词使用, 这时 need 就象其他动词一样,有第三人称,单复数, 后面加带 to 的动词等特性。
needn't + have + 过去分词 表示过去做了没必要做的事情。
dare 除用作情态动词外,更多的是当实义动词使用, 用法同实义动词一样,要考虑人称,单复数,时态等。
ought 应当,应该 后面跟带有 to 的动词不定式。
ought + to have done 句型。指过去动作,表示一件事情该做而未做。
ought not to have done 句型。表示一件不该做的事情却做了。
will (would)决心,愿望。 would 为 will 的过去式,
will, would用于疑问句表示说话人向对方提出请求或询问,用 would 比 will 更婉转,客气。
Shall, should表示命令,警告,允诺,征求,劝告,建议惊奇。
have to,不得不,必须,表示客观条件只能如此, 而must 则表示主观思想必须
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。
7. 高中英语语法：情态动词
情态动词有四类：
①只做情态动词：must,can(could),may(might)……
②可做情态内动词又可做实义动词：容need,dare
③具有情态动词特征：have(had,has)
to,used
to
④情态动词表猜测
8. 英语情态动词语法
c,b,d,a
1.虚拟语气
2. 肯定不到6岁
3. (理论上的)可能
4. 可能是...