1. 英語中情態動詞的用法歸納總結
1) may(might) have + done sth, can (could) have + done sth 表示過去，推測過去時間里可能發生的事情。
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，對過去時間里可能發生的事情的推測，語氣較強，具有"肯定"，"諒必"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
本應該做某事，而事實上並沒有做。否定句表示"不該做某事而做了"。
You ought to (should) have been more careful in this experiment.
He ought not to have thrown the old clothes away.（事實上已扔了。）
ought to 在語氣上比should 要強。
4) needn't have done sth 本沒必要做某事
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. 初中情態動詞的具體用法總結
一、can的用法：
1. (表示能力、功能)能,會
The classroom can seat thirty students.
這教室能坐三十位學生。
June can drive now.
瓊現在會開車了。
2. (表示可能性)可能,可能會
I think the work can be completed ahead of time.
我認為這項工作能提前完成。
3. (表示允許、請求)可以
You can't take the book out of the room.
你不可以將這本書拿出室外。
Can I use your pen?
我可以用一下你的筆嗎?
4. (表示命令)必須
If you won't keep quiet you can get out.
你如不保持安靜,就請你走。
5. (表示偶然發生的可能性)有時會
It can be quite windy there, especially in spring.
那裡有時容易刮風,特別在春季。
6. (表示驚訝)究竟;竟至於
What can it possibly be?
到底那是怎麼一回事?
二、could的用法
can的過去式；
（用於虛擬語氣，表示與事實相反的設想）能；可以；
（表示可能性）可能；
（用於婉轉語氣）能，可以
三、may的用法
1.表示請求和允許，意思是：可以
He may come if he likes. 如果他想來，可以來
2.表示祝願，意思是：祝…，（但願）。
May the friendship between our two peoples last forever. 祝兩國人民的友誼萬古長青。
3.表示推測，意思是：可能（會），或許（會）。
It may rain this evening. You'd better take an umbrella. 今晚可能要下雨，你最好帶上雨傘。
四、must的用法
1.表「必須」。
You must talk to them about their study.你必須同他們談談關於他們學習的事。
2.在否定結構中表不許。
You mustn't leave here.你不能離開這兒。
3.表堅定的建議。
You must come and see us as soon as you get to Shanghai.一到上海你得馬上來看我們。
4.表推測，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。他的臉色那麼蒼白。
注意：
may 暗含的可能性較小。must 暗含的可能性較大。否定的猜測用can't
The baby can't be ill. He is so active.那寶寶不大可能是病了。他那麼活躍。
五、might的用法
might表示的可能性太小，沒有足夠的說服力去職責別人。
can, could 之間的區別，和 may,might 之間的區別在於，虛擬句和過去時態用後者，表示的可能性比原詞小，但大部分時候2者可以互換，不會產生歧義或者對表述造成干擾。
六、should的用法
1.should 作為助動詞 shall 的過去式，可以在間接引語中與第一人稱主語搭配，表示過去將來時間。
2.should 作為情態動詞，通常用來表示現在或將來的責任或義務，譯作「應該」、「應當」，這時它可以和 ought to， be supposed to 互換使用。例如：
You should （= are supposed to ） complete your test in time.
你們應該按時做完你們的實驗。
3.should 作為情態動詞，可以用在條件狀語從句中，表示語氣較強的假設，譯作「萬一」、「竟然」，這時也可將 should 置於從句之首，即將 should 放在主語前面，而省略從屬連詞 if.
If it should rain tomorrow， I wouldn't go. （= Should it rain tomorrow， I wouldn't go.）
萬一明天天下雨，我就不去了。
七、 would的用法
1.would是will的過去式，Would you like～？
表示請求、勸說，是很客氣的說法。
Would you like a cup of tea？
您願意喝杯茶嗎？
2.主語+would like to～
表示「想要……」的意思上，與…want to～意思一 樣，但用此句型較客氣。
I want to ask you a question.
3.最基本的虛擬語氣句型:
主句用would/ should/ could/ might +動詞原形。
八。ought to的用法
ought to 是一個可以加上to 的情態動詞其意思與should是一樣的,但是ought to 不能用於虛擬語氣中表示推測,而should可以
ought to與should意思接近，大多數情況下二者可以互換，但是should談的是自己的主觀看法，ought to則更多反映客觀情況，在談到法律、義務和規定時使用。
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. 初中英語情態動詞的用法
非常全，自己總結的哦！！！
Grammar—Modal-verb
Ⅰ.情態動詞
一、can/could
1.表示能力時
was/were able to 具體做成某件事（=managed to do ）
could 只表示能夠
2.can+感官動詞
can taste/ see/ hear/ smell/ feel/ believe/ decide/ understand
3.can表示驚訝、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 …都不過分；越…越好
Eg: You cannot over praise him.
6.理論上的可能性：
Eg: Accidents can happen on such rainy days.
Anyone can make mistakes.
The temperature can fall to -40℃.
7.can』t 表示否定推測：
Eg: It can』t be him, for he has gone to Paris yesterday.不能用mustn』t
8.can/could 表示允許、請求
Can/May I help you?
I wonder if I can/could do sth.(此處could不表示時態)
-Can/Could/May I use…?
-Yes, you can/may.
-No, you can』t/ may not/ mustn』t.(題目選項中如果表否定允許有mustn』t就選mustn』t)
You』d better not.(may問一般不用may回答)
I』d rather you didn』t.
9.can/could (not) have done
(1)本能做、沒能夠
(2)過去可能會做、過去不可能做
Eg: He could have killed Harry Potter, but he didn』t.（過去本能夠）
He couldn』t have killed him 17 years ago, and he cannot do it now, either.（過去沒能夠）
Can he have gone to his aunt』s ?(過去可能會做)
He cannot have forgotten it. （過去不可能）
二、may/might
1.may /might 推測性用法 可能
He may be right.
He may not come today (可能不)
He may /might come tomorrow.
注意：只用於肯定和否定句中,不用於疑問句中
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理應，有足夠的理由
You may（might）as well stay where you are.
-Shall we walk?
-We may as well.
4.表祝願 May you be happy!
5.may (might) + have +done 表示對過去發生行為的推測，也許或許已經做
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.表示讓步
Eg: However hard he may try, he cannot get the first place.
三、must
1. 表示義務意為「必須」（主觀意志）
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.肯定推測（絕對不能用於否定推測！！！！否定推測用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想必准時一定做了某事，否定是can』t/couldn』t have done
5. didn』t need to have done 過去沒有必要做，具體是否做不強調
needn』t have done 本不必卻做了
四、shall
1.在肯定句、否定句中表示命令、警告、威脅、許諾以及法律、規定、規章制度
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. 按我說的做。（命令）
You shall have my answer tomorrow. 你明天可以得到我的答復。（允諾）
He shall be sorry for it one day, I tell you. 有一天他會後悔的，我告訴你。（警告）
Nothing shall stop us from carrying out the plan. 什麼也不能阻止我們執行這項計劃。（決心）
2.表示請求、允許 Shall he/ she/ they/ I/ we……？
Eg: Shall I open the window?
Shall the driver wait outside?
五、should
1.用於第一人稱疑問句中詢問對方的意願，但語氣較委婉溫和
What should we do now?
2.表示應該、必須，常與must 換用。（不常見）
We should (must) master a foreign language at least.
3.「should+be+表語」的結構，表示推測或驚奇。
They should be back by now.
I am sorry that she should be so careless.
4.「should+have+過去分詞」的結構，表示過去該做而實際上尚未做的動作或行為；其否定則表示發生了不應該發生的行為。其同義結構「ought to have +過去分詞」,表示過去「早應該」、「本當」之意，語氣較強。
I should have thought of that. 這一點我是應當想到的。（但沒想到）
They should not have left so soon.他們不應當走得這么早。（但已走了）
5. 在「It is natural (strange, natural, necessary, surprised, impossible, important ) that……」句型中，主語從句中的謂語動詞要用「should +do」表示理所當然」、「奇怪」、「必要」、「驚異」等的意思。在lest（以免）、for fear (that) (以防)、in case（以備萬一）等之後也要用should do;在advise, suggest, order, demand, request 等的從句中同樣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 結構表示說話人對某事不能理解，感到意外驚異等意思，意為「竟會」
Eg: Why should you be so late today？
How should I know? 我怎麼會知道？（意為：我不知道）
六、will/would
1.表示意志，決心或願望。
Surely we will support all the people in the world in their struggle for peace.
我們一定要支持全世界人民爭取和平的斗爭。
He would not let me try it . 他不肯讓我去試。
I will do anything for you. 我願為你做任何事。
None is so blind as those who won』t see. 不願看的人眼最瞎。
If you will read the book, I』ll lend it to you. 如果你願意讀這本書，我會把它借給你
2.will表示經常性、習慣性、傾向性，would表示過去的習慣行為。
He would come to see me when he was in Beijing.他在北京時，常來看望我。
Every time she was in trouble, she would go to him for help.
Fish will die out of water. 魚離開水就不能活。
3.用於第二人稱作主語的疑問句中，表示對對方的請求，would的語氣比will委碗
Would/will you kindly tell me the way to the station? 請問到火車站怎麼走？Would you like another glass of beer? 再來杯啤酒好嗎？
Would you mind cleaning the window? 請把窗戶擦一下好嗎？
Will you close the window? It』s a bit cold. 請你把窗戶關上好嗎？有點冷。
Won』t you drink some more coffee? 再來一點咖啡好嗎？
4.表可能性
This will be the book you are looking for.這可能就是你要找的書。
She would be about 60 when she died.他死時大概60歲。
5.won』t擬人化
Eg: The door won』t open.
The car won』t start.
七、need
情態動詞need 實意動詞need
現
在
時 You need (not) do
He need (not) do You (don』t) need to do
He needs (doesn』t need) to do
過
去
時
You needed (didn』t need) to do
He needed (didn』t need) to do
將
來
時 You need (not) do
He need (not) do You will (not) need to do
He will (not) need to do
八、dare
句型
時態
情態動詞dare
實義動詞 dare
肯
定
句 現在時
dare to
dare/dares to do
過去時 dare to
dared to do
否
定
句 現在時
daren』t/dare not do
do/does not dare (to) do
過去時 dared not do
did not dare (to) do
疑
問
句 現在時
Dare he do?
Do you/Does he dear (to) do?
過去時 Dared he do? Did he dare (to) do
九、寧願做某事
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.情態動詞表推測
一、情態動詞表推測的三種句式
1.在肯定句中一般用must (一定)，may（可能），might / could（也許，或許）。
（1）He must/may/might know the answer to this question?
他一定/可能/也許知道這個問題的答案。
（2）It is cold in the room. They must have turned off the heating.
屋裡很冷，他們肯定把暖氣關了。
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.
這不可能是校長，他去美國了。
（2）He may not/might not know the scientist. 他也許不認識那位科學家。
3.疑問句中用can/could (能……?)。
（1）Could he have finished the task? 他可能把任務完成了嗎？
（2）Can he be at home now? 他現在能在家嗎？
註：以上三種句式中情態動詞的語氣按程度都是依次遞減的。Might, could並非may, can的過去式，而表示語氣較為委婉或可能性較小。
二、情態動詞表推測的三種時態
1.對將來情況的推測，用「情態動詞 + 動詞原形」。
（1）She must / may / might / could arrive before 5. 5:00前她一定/可能/也許到。
（2）She must/may/might/could walk miles and miles among the hills without meeting anyone.
她一定/可能/也許會在山裡一連走好幾英里而遇不到一個人。
2.對現在或一般情況的推測，用「情態動詞 + be」，「情態動詞 +be doing」或「情態動詞 + 動詞原形」。
（1）He must / may / might / could be listening to the radio now.
他一定/可能/也許正在聽收音機。
（2）He can』t ( couldn』t ) / may ( might ) not be at home at this time.
這個時候他不可能/可能不在家。
（3）Mr. Bush is on time for everything .How can ( could ) he be late for the opening ceremony ?
布希先生一向准時，這次開幕式他怎麼可能遲到呢？
3.對過去情況的推測，用「情態動詞 + have +過去分詞」。
（1）It must / may / might / could have rained last night .The ground is wet.
地濕了，昨晚肯定/可能/也許下雨了。
（2）The door was locked. He can ( could ) not / may ( might ) not have been at home .
門鎖著，他不可能/可能不在家。
（3）Can / Could he have gotten the book？
難道他找到書了嗎？
註：情態動詞 should /ought to表推測時，意為「想必會，理應……」但與「have +過去分詞」連用時，則又可構成虛擬語氣意為「本應該做某事卻沒做」。例如：
（4）It』s seven o』clock. Jack should/ought to be here at any moment.
現在七點鍾了，傑克理應隨時到達。（推測）
（5）She should / ought to have attended your birthday party, but she had to look after her mother in hospital. （虛擬） 她本該出席你的生日晚會的，可是她得在醫院照顧她媽媽。
（6）Tom should not /ought not to have told me your secret, but he meant no harm. （虛擬）
湯姆本不該告訴我你的秘密，可是他並無惡意。
Ⅲ.must反意疑問句
—應該 mustn』t
—必須 needn』t
—推測 還原成不含推測的句子一致
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. 初中英語情態動詞用法與歸納
1
中學英語情態動詞用法歸納與練習
A
can / could = be able to
1
表示能力兩種時態
can (could)
，其他時態要用
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義
* managed to do / succeeded in doing
2
表示請求或許可
Could
比
Can
更加客氣
Can I go now? Y
es, you can.
3
表示推測或可能性，常用於否定句和疑問句
Today is Sunday. He can't be at school.
Could have done
可用在肯定句中表示過去存在的可能性
* may have done
She could have gone out with some friends yesterday
.
Could have done
可以表示虛擬語氣
,
某事可能發生（並沒有發生）
It was silly to throw the TV out of the window. It could have hit somebody.
B may and might
的用法
1
表示請求和允許
類似用法
can could(
更加口語化
)
May I watch TV now?
Y
es, you may
.
2
表示可能性
;
猜測
might
比
may
更加不確定
may/might have done
對過去的揣測
*
May not
可能不；不可能；一定不可
3
表示祝願
Wish you success! May you succeed!*
C must and have to
1
表示必須；一定要
可以用
have to
代替
must
現在；將來的必須
而且是主觀看法
*
have to
有多種時態
而且強調客觀情況
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
表示推測
意思非常肯定
「
一定是
」「
一定會
」
It must be raining outside.
Must have done
對過去
/
完成的推測
*
must have done, didn』t / hasn』t
Must be doing
推測現在正在進行
He must have gone over the article, hasn』t he?
D need and dare
過去時
dared
情態動詞和實意動詞的區別
A
人稱變化
B do / to do
C
直接否定
/
間接否定
can
work
Need /dare
肯定句中，實義動詞
She needs to do it. I dare to do it.
使用在否定句
,
疑問句中，情態動詞，實義動詞。
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
情態動詞
無時態；人稱的變化
多用於疑問句和否定句
Y
ou needn』t try to explain.
Needn』t = don』t have to
Needn』t have done
sth
過去本不必做某事
*
虛擬語氣
3 dare
情態動詞
過去時
dared
無人稱的變化
多用在疑問句和否定句
Dare he tell them what he knows?
4 dare
實義動詞
有時態；
人稱的變化後接
to do
用於疑問句和否定句時
其後的
to
有時可省
略
Do you dare (to) jump off the high wall?
E will and would
1
表示徵求對方
(
第二人稱
)
意見或詢問對方意願
would
比
will
更客氣委婉
Would
與
used to
的區別
*
Would
只能用來表示重復的動作而不能表示狀態
Used to
既可表示動作也可表示狀態
,
強調現在不如此
He used to be a university student.
2 shall
肯定句中
表示說話人強烈的感情
允許，命令，禁止和威脅
*
2
These rules shall be obeyed.
4 should
表示勸告，建議
= ought to
應該
You should wash your hands first.
Should
主要表示主觀看法
*
Ought to
客觀情況
法律、規定、義務的使用
5. 英語情態動詞用法與歸納
情態動詞是一種本身有一定的詞義,表示說話人的情緒,態度或語氣的動詞,但不能單獨作謂語, 只能和其他動詞原形構成謂語。
情態動詞數量不多,但用途廣泛,主要有下列:
can (could), may (might), must, need, ought to, dare (dared), shall (should), will (would) .
情態動詞的位置:
情態動詞在句中放在謂語動詞之前, 謂語動詞前若有助動詞,則在助動詞之前,疑問句中, 情態動詞則在主語之前。
情態動詞的特點:
情態動詞無人稱和數的變化, 情態動詞後面跟的動詞需用原形,否定式構成是在情態動詞後面加 "not"。 個別情態動詞有現在式和過去式兩種形式, 過去式用來表達更加客氣, 委婉的語氣, 時態性不強, 可用於過去，現在或將來。
情態動詞的用法:
can (could) 表示說話人能,可以,同意,准許,以及
客觀條件許可,could 為 can 的過去式。
Must 必須,應該,一定,準是, 表示說話人認為有必要做某事, 命令, 要求別人做某事以及對事物的推測。
must 用來指一般現在時和一般將來時, 過去式可用 have to 的過去式代替。
must + have + 過去分詞,表示現在對過去事物的推測。
must 和 have to 的區別: must 表示說話人的主觀思想, have to 表示客觀需要。
need 是一個情態動詞, 他的用法完全和其他情態動詞一樣, 但 need 還可當作實義動詞使用, 這時 need 就象其他動詞一樣,有第三人稱,單復數, 後面加帶 to 的動詞等特性。
needn't + have + 過去分詞 表示過去做了沒必要做的事情。
dare 除用作情態動詞外,更多的是當實義動詞使用, 用法同實義動詞一樣,要考慮人稱,單復數,時態等。
ought 應當,應該 後面跟帶有 to 的動詞不定式。
ought + to have done 句型。指過去動作,表示一件事情該做而未做。
ought not to have done 句型。表示一件不該做的事情卻做了。
will (would)決心,願望。 would 為 will 的過去式,
will, would用於疑問句表示說話人向對方提出請求或詢問,用 would 比 will 更婉轉,客氣。
Shall, should表示命令,警告,允諾,徵求,勸告,建議驚奇。
have to,不得不,必須,表示客觀條件只能如此, 而must 則表示主觀思想必須
6. 急求有關英語中情態動詞的用法和總結。謝謝
情態動詞的用法:
can (could) 表示說話人能,可以,同意,准許,以及
客觀條件許可,could 為 can 的過去式。
Must 必須,應該,一定,準是, 表示說話人認為有必要做某事, 命令, 要求別人做某事以及對事物的推測。
must 用來指一般現在時和一般將來時, 過去式可用 have to 的過去式代替。
must + have + 過去分詞,表示現在對過去事物的推測。
must 和 have to 的區別: must 表示說話人的主觀思想, have to 表示客觀需要。
need 是一個情態動詞, 他的用法完全和其他情態動詞一樣, 但 need 還可當作實義動詞使用, 這時 need 就象其他動詞一樣,有第三人稱,單復數, 後面加帶 to 的動詞等特性。
needn't + have + 過去分詞 表示過去做了沒必要做的事情。
dare 除用作情態動詞外,更多的是當實義動詞使用, 用法同實義動詞一樣,要考慮人稱,單復數,時態等。
ought 應當,應該 後面跟帶有 to 的動詞不定式。
ought + to have done 句型。指過去動作,表示一件事情該做而未做。
ought not to have done 句型。表示一件不該做的事情卻做了。
will (would)決心,願望。 would 為 will 的過去式,
will, would用於疑問句表示說話人向對方提出請求或詢問,用 would 比 will 更婉轉,客氣。
Shall, should表示命令,警告,允諾,徵求,勸告,建議驚奇。
have to,不得不,必須,表示客觀條件只能如此, 而must 則表示主觀思想必須
情態動詞無人稱和數的變化, 情態動詞後面跟的動詞需用原形,否定式構成是在情態動詞後面加 "not"。 個別情態動詞有現在式和過去式兩種形式, 過去式用來表達更加客氣, 委婉的語氣, 時態性不強, 可用於過去，現在或將來。
7. 高中英語語法：情態動詞
情態動詞有四類：
①只做情態動詞：must,can(could),may(might)……
②可做情態內動詞又可做實義動詞：容need,dare
③具有情態動詞特徵：have(had,has)
to,used
to
④情態動詞表猜測
8. 英語情態動詞語法
c,b,d,a
1.虛擬語氣
2. 肯定不到6歲
3. (理論上的)可能
4. 可能是...