高中英語情態動詞怎麼講

⑴ 高中英語情態動詞講解

情態動詞講解 一can 1.表"能力"I can lift the stone. I can speak English while he can't. Who can play the violin? He got up early yesterday so that he could catch the early bus.
could 表過去的能力。
注；1。can 與be able to表能力時的區別：
① 形式上；can有兩種形式can 與could，而be able to有更多的形式。
is(are)able to, was able to ,, has been able , will be able to , would be able to 等。
be able to 只表能力而can 還可表"可能性"，"驚異","許可"等。
② could與was able to表過去能力的差別：均表過去的能力，但was（were）able to還可表業已成功的行為（即：動作確實做了）。
2．表"許可"You can go now. You can use my dictionary. You can have a rest.
-Can I smoke here?
-No, you can't.
註：用could代替can在疑問句中，語氣客氣委婉，但在時間上還指現在.Could you lend me your bike? Could you tell me how to get to the station?
注意：回答由could引起的問句，仍用can 而不用could。
-Could you wait a few more minutes?
-Yes, I can.
3.表猜測"可能"，一般用於疑問句和否定句。
-Can the news be true? -It can't be true. Where can he be?
註：(1)can't表"不可能"，語氣斷然否定。
(2) could在賓語從句中表過去的可能性，其它情況一般還表示現在的可能性只是語氣比can委婉和更加不肯定。 I thought he could come .
(3) can 亦可用於肯定句表可能，但表示的是邏輯推理上的可能性（或理論上的），非主觀臆斷。There can be no noise on the moon because of sound being carried by the air .
(4) can(could)…have done或can(could)…have been(done)用於疑問句或疑問句表對過去時或完成時的揣測。
What can have happened to him ? He can not have read the book. He can't have been to Beijing.
4.表"驚異""驚訝"：How can you be so impolite? How can you say that?
二. may 表"允許""許可""允諾"（征詢對方許可）。
You may go now . May I use your bike? You may keep the book for 2 weeks .
注意：(1)其否定形式may not表示不可以，但更常用must not來代替may not表示"不可以"，"禁止"。 -May I watch TV after supper?
-Yes, you may.(No, you mustn't .或No, you may not.或No, you'd better not.)(2)與can的比較：may比can更正式。May I know your name? May I (he, we…)….?
×May you….? (May you have a good journey! 此處表祝願)
（3）。might代替may用於疑問句，更客氣禮貌些，回答時仍用may。
-Might I use your telephone? -Yes, you may .
(4)might not 不表示"不允許"
2．表"可能"。（1）用於肯定句和否定句（因為May I…?表徵詢許可）。
The news may be true . He may not be at home now. I think he may come today(tomorrow).
However fast you may run, you can't catch the fast train.
(2)用might語氣更加不肯定，但指現在或將來，只有在賓語從句中might do（be）才表示過去可能性。 He might come today(tomorrow). She might have some fever .
I thought you might like something to read, so I brought some books for you .
She said she might not be at home.. I might be busy tomorrow.
(3)may not 與cannot的區別： may not"可能不"，cannot "不可能"。
比較The news may not be true.
The news can't be true .
(4) may(might)(not)+have done(been)表對過去或完成時的揣測。
Something may have happened to him . He may have been to Beijing .
3.表祝願May you be happy! May you have a pleasant journey!
綜合性補充；（1）could have done和might have done 還可以用於虛擬語氣而can(may)have done 只用於揣測。
（2）表揣測用於反意問句的情況。
三must （無詞形變化）
（1）。表"必須"，"應該"，"務必" must not(mustn't)表"禁止"，"不許"，"不準"，"不可以"。 Everyone must attend the lecture. The work must be finished as soon as possible.
You mustn't lend it to others.
注；對must問句的回答。 -Must I go there now?
-Yes, you must.
-No ,you ①needn't. ②need not ③don't have(got) to ④don't need to.
2.must表推測"一定"，"必定"，一般只用於肯定句，亦即用於疑問句和否定不表揣測。
（1）對現在He must be at home now. You must be hungry after the long walk.
The Chinese language must have the largest number of speakers.
(2)對進行時。 He must be sleeping now(at that time).
（3）對過去時或完成時。
It must have rained last night. He must have fallen asleep(then).
He must have gone to Beijing yesterday. She must have been young when she got married .
注意其反意問句。
3 .must表不可避免的傾向。 All men must die.
4 . must 表"偏偏"，"不巧" My car must break down.我的車偏偏壞了。
四.have to "不得不"
1. 與must的區別 （1）must表說話人的主觀看法，而have to表客觀需要。
比較：I have to stop smoking .(外界壓力，客觀情況使然)
I must stop smoking.（主觀認為）
2.must只有一種形式而have to有更多的形式have to, has to ,had to ,will have to 等等。
I thought I must go there.
3.have to 的疑問，否定均須藉助於do。 Does he have to go there now ?
不說Has he to go there now?
He has to go there now ,doesn't he? The work has to be finished before 10 o'clock..
4.must與had to的差別： had to還可以表示業已完成或實現的動作（即；動作確實做了）。
I had to stay at home last night.
五.ought to與should
1.兩者的差別ought to語氣重，偏重"責任，義務，道德、法律"等方面，"總應該"。
You ought to follow your father's advice.
注意其疑問及否定形式 -Ought he to go ？-Yes, he ought (to).
2. ought to (should)have done 表本應該做而實際未做。
You ought to have told him about the news . He shouldn't have been told about the news.
本不應該把此事告訴他（而實際告訴了）。
You should have got up early .
should have done 還可表虛擬語氣
用於第一人稱
3. ought to還可表示非常有可能的事。
It ought to be a close game , most probably. It ought to be a fine day tomorrow.(極可能是好天)
六.need （1） 作為情態動詞①常用於疑問句和否定句②無人稱和時態的變化③疑問否定藉助於need本身④後跟動詞原型。
（2）need作為實義動詞① 有人稱和時態的變化（needs，needed）②疑問否定藉助於do③可有自己的賓語（可以是名詞，代詞，不定時）④不受什麼句型限制。
I need a pen . I need to go there. He didn't need to go there. Do I need to go there? Need I go there now ? You needn't go there now. ×I need go there now.
3.needn't have done表"本不必做而實際做了"。 You needn't have hurried.你（當時）本不該匆忙。
4．對need引起的一般問句的回答： -Need I go now ? -Yes ,you must .-No, you needn't.
七.dare 1，（1）作為情態動詞 ①無人稱和時態變化②常用於疑問句和否定句③跟不帶to的不定式。註：有固定說法I dare say…… How dare you say……?
2.實義動詞①有人稱和時態的變化②疑問和否定藉助於do③跟帶to的不定式。
比較 情態動詞 實義動詞
肯定句 × He dared to do it .
否定句 He daren't to do itHe dare not do it. He didn't dare to do it .He doesn't dare to do it.
疑問句 Dare he do it?Dare he not do it? Does he dare to do it?Doesn't he dare to do it?
註：（1）有時可把dare的情態和實義動詞的用法揉合在一起。如；No one dared say that.
(2)在否定句中實義動詞dare後的不定式"to"符號可以省略。I don't dare(to)ask her.
2.daren't have done 表"本不敢做而實際做了"。
八.shall （此處講述的是shall情態動詞而非助動詞表時態）。
1． shall用於二，三人稱表"命令，警告。威脅，強制。允諾"等。
用於一，三人稱用來征詢對方意見或請求指示。
You shall do it as I say. Tell him that he shall have the book tomorrow.
表"允諾"相當於may或can
Shall he come at once?(征詢對方意見) where shall we meet ? Shall we take a walk together?
2.should (1)表"勸告，建議"Children should be taught to tell the truth.
I suggested he (should )go there. Was it necessary that my uncle (should) be informed?
(2)表"驚異"It's strange that he should have done such a thing.
（3）． 表"可能性"They should be there by now, I think.(98年高考已考過)。
九. Will 1。表"意志，意願，樂意"，用於各人稱 。（與will作助動詞表時態區分開來）。
I will tell you all about it.相當於I am glad to tell you all about it.
He won't go there.他不願意去那裡。
2． Will在疑問句用於第二人稱，表示詢問對方的意願或向對方提出請求。
Will you go with me for a walk? Do come to my birthday party , will you?
Will you please tell me how I can get to the station ? Won't you sit down?
3. 表示習慣性動作，有；"總是，總要，"，"慣於"的意思 。
Fish will die out of water。魚離開水總是要死的。
He will talk for hours if you give him the chance .你要給他機會的話他總是要談上幾個鍾頭 。 十.Would (是will的變形，與will的用法相對應。應把would作助動詞表時態區分開)。1． 表"意願"用於人稱。 He said he would help us.他說他樂意幫助我們。2． 表說話人的意願或向對方提出請求，語氣比will更客氣婉轉，但指的是現在時間。Would you like some bananas ? I'd rather stay at home than go out .Would you mind opening the window for me ?注意：用would提出的一般疑問句，回答時要還原為will。-Would you help me with my lessons? -Yes, I will.3. 表過去的習慣動作。She would drop in on her teacher when she went to town .她總是要順便看一下老師。Every day she would get up early at six o'clock.過去她總是每天6點起床。She would sit like that for hours watching ships.她過去總是坐在那裡幾個鍾頭看船。3． 用於虛擬語氣或用於科幻作品中。Such would be our home in the future. 我們未來的家庭就是這樣。 十一. used to表示"過去常常"（而現在並非這樣）。We used to be good friends. There used to be a temple here. He used to go to work by bus。He used to like fish.他過去愛吃魚。改為否定句：He didn't use to like fish .(He usedn't to like fish.或He used not to like fish).改為疑問句：Used he to like fish？ 或Did he use to like fish?回答Yes, he used to .否定式問句Use(d)n't he to like fish?反意問句There used to be a temple here, usedn't there? （或didn't there？）1．註：would與used to表"過去常常"的差別：①used to表現在已不復存在的過去習慣或狀態有今惜對比的含義，而would則不涉及現在。He used to like fish.(現在不了)。He would like fish.（現在是不是這樣，不知道）。②used to 表不確定的過去時間，常常不帶表確指過去的時間狀語，而would常帶。③ would 表過去屢次發生的動作，所以不表狀態。而used to可表狀態也指動作。？There would be a temple here.④ would 有自覺自願的含義，通常譯作"總是，總要"，而used to只說明過去的事實，無自覺自願的含義，常譯作"過去常常"。Her would sit there, watching ships.（個人願意）。2．①used to do sth.過去常常做。。。②be (get)used to（doing）sth.習慣於。。。③be used to do sth.被用來做。。 與練習結合，體會掌握情態動詞的用法。

⑵ 高中英語情態動詞用法

兩種說法都沒有錯，這出題人太不嚴謹了···
還有啊，should不一定得省略，could have done也可以有可能做了某事

⑶ 您可以給我一下高中英語情態動詞的詳細講解資料嗎

你好，同學

知識精要
情態助動詞是近幾年來高考的重點考查項目。對情態助動詞的考查主要圍繞其推測和可能性的用法而展開。此外，對個別助動詞的特殊用法要熟練掌握。
1.表示能力，意為「能，會」，用can, could, be able to均可，could是can的過去式。區別是：can只有過去時could，而be able to有多種時態。
John can speak three foreign languages fluently.
約翰能流利地說三門外語。
John could swim when he was four.
約翰四歲時就會游泳。
I regretted that I hadn』t been able to drive him home.
我後悔我沒能開車送他回家。
Will you be able to help me learn English tomorrow?
明天你能幫助我學習英語嗎？
2.表示請求或允許，意為「可以」時，用can、could或may均可，只不過can比may更正式，could比can語氣更委婉。
Can I park my car in front of your office?
我能把我的車停在你的辦公室前面嗎？
----Could I use your bike now?
----Certainly. Go ahead.
May I have a look at the photos that you took yesterday?
我能看一下你昨天拍的照片嗎？
3. must, can, may/might表推測時的用法。
表推測時must用於肯定句，can用於疑問句和否定句，may/might用於肯定句和否定句。must用於否定句時不表推測，表示「禁止，千萬不做…」。
The man standing over there must be a doctor.
站在那邊的那個男子一定是個醫生。
The man standing over there can』t be a doctor.
站在那邊的那個男子不可能是個醫生。
He may be out now.
他可能出去了。
I think you mustn』t change the way that you live.
我想你千萬不要改變你的生活方式。（這句中的must不表推測，表禁止。）
can和may表推測都可用於否定句，但can』t的意思是「不可能」，may not的意思是「可能不」。可見can』t的否定意味更強。
A teacher like her may not be popular with the students.
像她這樣的老師可能不會受到學生的歡迎。
A teacher like her can not be popular with the students.
像她這樣的老師不可能會受到學生的歡迎。
4.can和may都可以用於肯定句中表示可能性，注意它們的的區別。
can表示可能性時是「理論上的（或邏輯上的）可能性」，並不是說話人的主觀猜測，意為「有時會…」。may表示的是「現實的可能性」。
In the north of Canada it can snow in June.
在加拿大的北部六月份有時會下雪。
The road is narrow and it can be blocked sometimes.
這條路窄，有時會堵車。
Jane has promised she will be here at 8:30,but it is 9:00 now and she hasn』t turned up. The road may be blocked.
簡答應8：30到這兒，但現在9：00了她還沒到。路上可能堵車了。
5. shall是近幾年全國各省市高考中考查頻率較高的一個重點情態助動詞。主要掌握以下內容：shall與第一人稱搭配，用於疑問句，表提出請求或徵求意見；與二、三人稱搭配，用於陳述句（肯定句和否定句），表警告、威脅、允諾、命令、強制、決心等。
Shall he open the window?
他打開窗戶好嗎？（表徵求意見）
You shall get the justice that you want.
你會得到你想要的公平。（表允諾）
You shall not use my camera if you don』t use it properly.
如果你不正確使用，我不會讓你使用我的照相機（表警告）
No, he shan』t go.
不! 他不能去。（表命令）
Nothing shall stop us from carrying out this plan.
什麼也阻擋不了我們實施這項計劃。（表決心）
6. must和should推測之外的用法。
上面講了must在肯定句中表推測的用法，must在肯定句中還有「必須」的用法。注意二者不要混淆。另外，must還有「偏偏，非要做…」的意思。
We must do everything step by step.
我們一定要一步一個腳印地做每一件事情。
If you must smoke, please go outside.
如果你非要抽煙，請出去。
When everybody was in bed, he must turned the radio on.
大家都上床睡覺了，他偏偏把收音機打開了。
should表示吃驚、贊嘆、不滿等情緒，也是近幾年來的高考熱點。
It』s wonderful that you should have achieved so much in these years.
這幾年你們有了這么大的成就真了不起。
You can』t imagine a gentleman like him should treat a lady so rudely.
你想像不出來象他這樣一位紳士竟然會如此粗魯地對待一位女士。
7.need和dare即可以作情態助動詞，也可以作實義動詞。
need用作情態助動詞時，無人稱、數、時態的變化，主要用於否定句和疑問句。
You don』t need to do it yourself.
你不必親自去做這件事。（實義動詞）
You needn』t do it yourself.
你不必親自去做這件事。（情態助動詞）
dare用作情態助動詞時，無人稱、數的變化，但有過去時態，主要用於否定句、疑問句和條件句。
You should dare to say no to her requirement.
你應該敢於拒絕她的要求。（實義動詞）
You daren』t say no to her requirement.
你不敢拒絕她的要求。（情態助動詞）
8.情態助動詞+ have done sth.
情態助動詞+ have done sth. 表示對過去(而不是現在或將來)應該發生而未發生的事情的態度和推測，不同的情態助動詞表示不同的意思，這也是近幾年來高考的熱點。
should/ought to have done sth. 表示過去本應該做某事而事實上未做。
I should have driven her home yesterday evening.
昨天晚上我該開車送她回家了。（事實上沒有送她回家）
shouldn』t/oughtn』t to have done sth. 表示過去本不應該做某事而事實上做了
You shouldn』t have had a quarrel with her.
你不該與她吵架了。（事實上與她吵過了）
need have done sth. 表示過去本有必要做某事而事實上未作
You need have met her at the station.
你很有必要到車站接她了。（事實上沒去車站接她）
needn』t have done sth. 表示過去本無必要做某事而事實上做了
You needn』t have cleaned the room for me.
你不必為我打掃房間了。（事實上已打掃了）
could have done sth. 表示過去本可以做某事而事實上未做
I wasn』t busy then and you could have asked me for help.
我當時不忙，你本來可以向我求助的。（事實上未向我求助）
注意：上述表達都是虛擬語氣，與事實相反。而must have done sth.和can』t have done sth.只是對過去事情的推測，不表示與事實相反。
The ground is wet and it must have rained last night.
地濕了，昨天夜裡一定下雨了。
His bike is here and he can』t have gone back home.
他的自行車還在這兒，他不可能回家了。

希望能幫到你，祝更上一層樓O(∩_∩)O
有不明白的請繼續追問，可以詳談嘛(*^__^*)

⑷ 急求高中英語情態動詞所有知識點及講解

知識精要
情態助動詞是近幾年來高考的重點考查項目。對情態助動詞的考查主要圍繞其推測和可能性的用法而展開。此外，對個別助動詞的特殊用法要熟練掌握。
1.表示能力，意為「能，會」，用can, could, be able to均可，could是can的過去式。區別是：can只有過去時could，而be able to有多種時態。
John can speak three foreign languages fluently.
約翰能流利地說三門外語。
John could swim when he was four.
約翰四歲時就會游泳。
I regretted that I hadn』t been able to drive him home.
我後悔我沒能開車送他回家。
Will you be able to help me learn English tomorrow?
明天你能幫助我學習英語嗎？
2.表示請求或允許，意為「可以」時，用can、could或may均可，只不過can比may更正式，could比can語氣更委婉。
Can I park my car in front of your office?
我能把我的車停在你的辦公室前面嗎？
----Could I use your bike now?
----Certainly. Go ahead.
May I have a look at the photos that you took yesterday?
我能看一下你昨天拍的照片嗎？
3. must, can, may/might表推測時的用法。
表推測時must用於肯定句，can用於疑問句和否定句，may/might用於肯定句和否定句。must用於否定句時不表推測，表示「禁止，千萬不做…」。
The man standing over there must be a doctor.
站在那邊的那個男子一定是個醫生。
The man standing over there can』t be a doctor.
站在那邊的那個男子不可能是個醫生。
He may be out now.
他可能出去了。
I think you mustn』t change the way that you live.
我想你千萬不要改變你的生活方式。（這句中的must不表推測，表禁止。）
can和may表推測都可用於否定句，但can』t的意思是「不可能」，may not的意思是「可能不」。可見can』t的否定意味更強。
A teacher like her may not be popular with the students.
像她這樣的老師可能不會受到學生的歡迎。
A teacher like her can not be popular with the students.
像她這樣的老師不可能會受到學生的歡迎。
4.can和may都可以用於肯定句中表示可能性，注意它們的的區別。
can表示可能性時是「理論上的（或邏輯上的）可能性」，並不是說話人的主觀猜測，意為「有時會…」。may表示的是「現實的可能性」。
In the north of Canada it can snow in June.
在加拿大的北部六月份有時會下雪。
The road is narrow and it can be blocked sometimes.
這條路窄，有時會堵車。
Jane has promised she will be here at 8:30,but it is 9:00 now and she hasn』t turned up. The road may be blocked.
簡答應8：30到這兒，但現在9：00了她還沒到。路上可能堵車了。
5. shall是近幾年全國各省市高考中考查頻率較高的一個重點情態助動詞。主要掌握以下內容：shall與第一人稱搭配，用於疑問句，表提出請求或徵求意見；與二、三人稱搭配，用於陳述句（肯定句和否定句），表警告、威脅、允諾、命令、強制、決心等。
Shall he open the window?
他打開窗戶好嗎？（表徵求意見）
You shall get the justice that you want.
你會得到你想要的公平。（表允諾）
You shall not use my camera if you don』t use it properly.
如果你不正確使用，我不會讓你使用我的照相機（表警告）
No, he shan』t go.
不! 他不能去。（表命令）
Nothing shall stop us from carrying out this plan.
什麼也阻擋不了我們實施這項計劃。（表決心）
6. must和should推測之外的用法。
上面講了must在肯定句中表推測的用法，must在肯定句中還有「必須」的用法。注意二者不要混淆。另外，must還有「偏偏，非要做…」的意思。
We must do everything step by step.
我們一定要一步一個腳印地做每一件事情。
If you must smoke, please go outside.
如果你非要抽煙，請出去。
When everybody was in bed, he must turned the radio on.
大家都上床睡覺了，他偏偏把收音機打開了。
should表示吃驚、贊嘆、不滿等情緒，也是近幾年來的高考熱點。
It』s wonderful that you should have achieved so much in these years.
這幾年你們有了這么大的成就真了不起。
You can』t imagine a gentleman like him should treat a lady so rudely.
你想像不出來象他這樣一位紳士竟然會如此粗魯地對待一位女士。
7.need和dare即可以作情態助動詞，也可以作實義動詞。
need用作情態助動詞時，無人稱、數、時態的變化，主要用於否定句和疑問句。
You don』t need to do it yourself.
你不必親自去做這件事。（實義動詞）
You needn』t do it yourself.
你不必親自去做這件事。（情態助動詞）
dare用作情態助動詞時，無人稱、數的變化，但有過去時態，主要用於否定句、疑問句和條件句。
You should dare to say no to her requirement.
你應該敢於拒絕她的要求。（實義動詞）
You daren』t say no to her requirement.
你不敢拒絕她的要求。（情態助動詞）
8.情態助動詞+ have done sth.
情態助動詞+ have done sth. 表示對過去(而不是現在或將來)應該發生而未發生的事情的態度和推測，不同的情態助動詞表示不同的意思，這也是近幾年來高考的熱點。
should/ought to have done sth. 表示過去本應該做某事而事實上未做。
I should have driven her home yesterday evening.
昨天晚上我該開車送她回家了。（事實上沒有送她回家）
shouldn』t/oughtn』t to have done sth. 表示過去本不應該做某事而事實上做了
You shouldn』t have had a quarrel with her.
你不該與她吵架了。（事實上與她吵過了）
need have done sth. 表示過去本有必要做某事而事實上未作
You need have met her at the station.
你很有必要到車站接她了。（事實上沒去車站接她）
needn』t have done sth. 表示過去本無必要做某事而事實上做了
You needn』t have cleaned the room for me.
你不必為我打掃房間了。（事實上已打掃了）
could have done sth. 表示過去本可以做某事而事實上未做
I wasn』t busy then and you could have asked me for help.
我當時不忙，你本來可以向我求助的。（事實上未向我求助）
注意：上述表達都是虛擬語氣，與事實相反。而must have done sth.和can』t have done sth.只是對過去事情的推測，不表示與事實相反。
The ground is wet and it must have rained last night.
地濕了，昨天夜裡一定下雨了。
His bike is here and he can』t have gone back home.
他的自行車還在這兒，他不可能回家了。

⑸ 高中英語語法：情態動詞

你好
http://wenku..com/view/a7cf7e630b1c59eef8c7b4e6.html。這個是關於情態動詞的詳細講解。高中英語語法簡明講義,簡明列出個語法的注意點,對於應試生而言是非常有用的語法補習課!
希望對你有幫助。

⑹ 請求一份高一英語情態動詞的講解，越詳細越好！

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

⑺ 高中英語情態動詞！

. 情態動詞
.1 情態動詞的語法特徵
1） 情態動詞不能表示正在發生或已經發生的事情，只表示期待或估計某事的發生。
2） 情態動詞 除ought 和have 外，後面只能接不帶to 的不定式。
3） 情態動詞沒有人稱，數的變化，即情態動詞第三人稱單數不加-s。
4） 情態動詞沒有非謂語形式，即沒有不定式，分詞，等形式。
.2 比較can 和be able to
1）cancould 表示能力；可能 (過去時用could),
只用於現在式和過去式(could)。be able to可以用於各種時態。
They will be able to tell you the news soon. 他很快就能告訴你消息了。
2）只用be able to
a. 位於助動詞後。
b. 情態動詞後。
c. 表示過去某時刻動作時。
d. 用於句首表示條件。
e. 表示成功地做了某事時，只能用was/were able to， 不能用could。
He was able to flee Europe before the war broke out.
= He managed to flee Europe before the war broke out.
注意：could不表示時態
1）提出委婉的請求，（注意在回答中不可用could）。
--- Could I have the television on?
--- Yes, you can. / No, you can't.
2）在否定，疑問句中表示推測或懷疑。
He couldn't be a bad man.
他不大可能是壞人。
.3 比較may和might
1） 表示允許或請求；表示沒有把握的推測；may 放在句首，表示祝願。
May God bless you!
He might be at home.
注意： might 表示推測時，不表示時態。只是可能性比may 小。
2） 成語： may/might as well，後面接不帶to 的不定式，意為"不妨"。
If that is the case, we may as well try.
典型例題
Peter ___come with us tonight, but he isn't very sure yet.
A. mustB. may C. can D. will
答案B. 表可能性只能用may.此句意可從後半句推出。
.4 比較have to和must

1)兩詞都是'必須'的意思，have to 表示客觀的需要， must 表示說話人主觀上的看法，既主觀上的必要。
My brother was very ill, so I had to call the doctor in the middle of the night.我弟弟病得很厲害，我只得半夜裡把醫生請來。(客觀上需要做這件事)
He said that they must work hard. 他說他們必須努力工作。（主觀上要做這件事）

2)have to有人稱、數、時態的變化，而must只有一種形式。但must 可用於間接引語中表示過去的必要或義務。
He had to look after his sister yesterday.

3） 在否定結構中： don't have to 表示"不必"
mustn't表示"禁止"，
You don't have to tell him about it. 你不一定要把此事告訴他。
You mustn't tell him about it.你一定不要把這件事告訴他。

.5 must表示推測

1) must用在肯定句中表示較有把握的推測，意為"一定"。
2) must表對現在的狀態或現在正發生的事情的推測時， must 後面通常接系動詞be 的原形或行為動詞的進行式。
You have worked hard all day.You must be tired. 你辛苦幹一整天，一定累了。（對現在情況的推測判斷）
He must be working in his office. 他一定在辦公室工作呢。

比較：
He must be staying there.
他現在肯定呆在那裡。
He must stay there.
他必須呆在那。
3) must 表示對已發生的事情的推測時，must 要接完成式。
I didn't hear the phone. I must have been asleep.我剛才沒有聽到電話，我想必是睡著了。

4) must表示對過去某時正發生的事情的推測，must 後面要接不定式的完成進行式。
---Why didn't you answer my phone call?
---Well, I must have been sleeping, so I didn't hear it.

5) 否定推測用can't。
If Tom didn't leave here until five o'clock, he can't be home yet.如果湯姆五點才離開這兒，他此時一定還未到家。
.6 表示推測的用法

can, could, may, might, must 皆可表示推測，其用法如下：

1）情態動詞+動詞原形。
表示對現在或將來的情況的推測，此時動詞通常為系動詞。
I don't know where she is, she may be in Wuhan.
2）情態動詞+動詞現在進行時。
表示對現在或將來正在進行的情況進行推測。
At this moment, our teacher must be correcting our exam papers.
這時，我們老師想必在批改試卷。

3）情態動詞+動詞完成時。
表示對過去情況的推測。
We would have finished this work by the end of next December.
明年十二月底前我們很可能已完成這項工作了。
The road is wet. It must have rained last night.
地是濕的，昨天晚上一定下雨了。

4）情態動詞+動詞的現在完成進行時。
表示對過去正在發生事情的推測。
Your mother must have been looking for you.
你媽媽一定一直在找你。

5）推測的否定形式，疑問形式用can't, couldn't表示。
Mike can't have found his car, for he came to work by bus this morning.
邁克一定還沒有找回他的車，因為早上他是坐公共汽車來上班的。

注意：could, might表示推測時不表示時態，其推測的程度不如can, may。
.7 情態動詞+ have +過去分詞

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 Ineedn'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.

.8 should 和ought to

should 和ought to 都為"應該"的意思，可用於各種人稱。
---Ought he to go?
---Yes. I think he ought to.
表示要求，命令時，語氣由 should（應該）、had better最好）、must（必須）漸強。

.9 had better表示"最好"

had better 相當於一個助動詞，它只有一種形式，它後面要跟動詞原形。
had better do sth
had better not do sth
It is pretty cold. You'd better put on my coat.
She'd better not play with the dog.

had better have done sth表示與事實相反的結果，意為"本來最好"。
You had better have come earlier.

.10 would rather表示"寧願"

would rather do
would rather not do
would rather… than… 寧願……而不願。

還有would sooner, had rather, had sooner都表示"寧願"、"寧可"的意思。

If I have a choice, I had sooner not continue my studies at this school.
I would rather stay here than go home. = I would stay here rather than go home.

典型例題
----Shall we go skating or stay at home?
----Which ___ do?
A. do you ratherB. would you rather C. will you rather D. should you rather
答案B。本題考查情態動詞rather的用法，would rather +do sth 意為"寧願"，本題為疑問句，would 提前，所以選B。
.11 will和would

注意：
1）would like； Would like to do = want to 想要，為固定搭配。
Would you like to go with me?
2）Will you…?Would you like…? 表示肯定含義的請求勸說時，疑問句中一般用some, 而不是any。
Would you like some cake?
3）否定結構中用will，一般不用would, won't you是一種委婉語氣。
Won't you sit down?

.12 情態動詞的回答方式

問句肯定回答否定回答
Need you…?Yes, I must.No,I needn't
Must you…?/don't have to.

典型例題
1）---Could I borrow your dictionary?
---Yes, of course, you____.
A. mightB. will C. can D. should
答案C.could表示委婉的語氣，並不為時態。答語中of course，表示肯定的語氣，允許某人做某事時，用can和 may來表達，不能用could或might。復習： will 與you連用，用來提出要求或下命令。should與you 連用，用來提出勸告。

2）---Shall I tell John about it?
---No, you ___. I've told him already.
A. needn'tB. wouldn'tC. mustn'tD. shouldn't
答案A。needn't 不必，不用。 wouldn't 將不, 不會的。 mustn't 禁止、不能。 shouldn't不應該。本題為不需要，不必的意思，應用needn't。

3）---Don't forget to come to my birthday party tomorrow.
---______.
A. I don't B.I won't C. I can'tD. I haven't
答案B.will既可當作情態動詞，表請求、建議、也可作為實義動詞表"意願、意志、決心"，本題表示決心，選B。
.13 帶to 的情態動詞

帶to 的情態動詞有四個：ought to, have to, used to, be to, 如加上have got to ,(=must), be able to，為六個。它們的疑問，否定形式應予以注意：
Do they have to pay their bill before the end of the month?
She didn't use to play tennis before she was fourteen.
You ought not to have told her all about it.
Ought he to see a heart specialist at once.?

ought to 本身作為情態動詞使用。其他的詞作為實義動詞使用，變疑問，否定時，須有do 等助動詞協助。

典型例題
Tom ought not to ___ me your secret, but he meant no harm.
A.have toldB.tellC.be tellingD. having told
答案A。由於後句為過去時，告訴秘密的動作又發生在其前因，此地應用過去完成時，但它在情態動詞 ought to 後，所以用have。

.14 比較need和dare

這兩詞既可做實義動詞用，又可做情態動詞用。作為情態動詞，兩者都只能用於疑問句，否定句和條件句。 need 作實義動詞時後面的不定式必須帶to，而dare作實義動詞用時, 後面的to 時常可以被省略。
1) 實義動詞： need（需要, 要求）
need + n. / to do sth
2) 情態動詞： need，只用原形need後加do，否定形式為need not。
Need you go yet?
Yes, I must. / No, I needn't.
3) need 的被動含義：need, want, require, worth（形容詞）後面接doing也可以表示被動：
need doing = need to be done

⑻ 高中英語情態動詞的用法有哪些

情態動詞的考點精簡
一、何謂「情態動詞」？
情態動詞主要用來表示說話人的情感、態度等，是中學英語語法的重點，也是高考的熱點，是單項填空必考的一個知識點。高考試題常常藉助語境和句子之間意義上的細微差別來考查學生對情態動詞的基本用法及其區別，近五年高考中主要考查四點：情態動詞表示推測和可能性的用法；情態動詞與虛擬語氣；情態動詞的表達「情感、態度、語氣等」，情態動詞表示 「必要性」等方面的用法。
二、情態動詞的特點
1.沒有人稱和數的變化。
2. 有些情態動詞有過去式的變化:
e.g. will → would , can → could , may→ might , dare → dared
三、情態動詞的否定形式
情態動詞+ not +動詞原形can not: can't , must not: mustn't , need not : needn't
四、情態動詞的用法（常考考點）
Shall
一）用於一、三人稱疑問句中，表示說話人徵求對方意見和向對方請示。
Shall we begin our class? Shall he come in, sir? (徵求對方意見)
二）用於二、三人稱 表命令、許諾、警告、規定、威脅、決心、也用於宣布法律、規定的要求
1. You shall get my reply tomorrow. (許諾)
2. 「The interest shall be divided into five parts, according to the agreement made by both side. （命令）
3. You shall be sorry for what you said one day, I tell you. (警告、威脅)
4. Nothing shall stop us from advancing. (決心)
5. —What does the sign over there read?
—「No person shall smoke or carry a lighted cigarette，cigar or pipe in this area.」(要求)

Should
一）應該，表示責任、義務
According to the air traffic rules, you should switch off your mobile phone before boarding.
二）竟然、（ 從句中） 驚奇、懷疑、不滿(expect\, think, believe等詞後） 委婉 客氣（第一人稱 ） 驚訝、埋怨 （二、三人稱） 萬一（ if 從句中）
1.） it』s a pity that he should be so careless. (竟然)
2.） I never expect that you should have come here. (驚奇 )
3.） I should advise you not to do it. (委婉 客氣)
4.） Who should come to see you when you are in trouble! (埋怨 )
5.）If you should change your mind, please let me know. (萬一)
三） 表示合理的推測
The video should be very interesting, in which you can see foreigners making Jiaozi ring the Spring Festival.
四）if 引導的虛擬條件句中，從句中只可出現should.
Should I have time, I would go there with you.
五）要求，命令和請求含義的動詞後，接賓語從句，從句中謂語「should do」,should 可以省略
Tom suggested that I (should) go there at once.
六）should have done 本應該做但是沒做
shouldn』t have done 本不應該做但是做了
You should have studied hard.
Must
一）表示必須要做的事: 必須
-Must I get to the station before three o'clock?
-Yes, you must. ( No, you needn't. )
二）用於指 偏要、硬要 （ 令人不快的事）
1. The car must break down just when we were in the jungle. (偏要)
2. -- Could I have a word with you, mum?
-- Oh, dear, if you must.
3. – Who is the girl standing over there?
-- Well, if you must know, her name is Mabel.
三）用於表肯定的猜測
He is absent today, and something must have happened to him.
She must be at home now, as I just called her.
四）禁止 (否定句)
You mustn』t make noises in the library. (禁止) (註：mustn』t沒有表推測的意思)

Can\ could
一） 能力（陳述句）He can swim./ He could swim when he was a child.
二） 驚異、懷疑、不相信（否定、疑問、驚嘆句）How can you be so careless？
三） can』t 表推測「一定不是」 He can』t be Mr. White, because I don』t know him.
四） can/ could 用於否定和疑問表猜測 I lost my purse. Where could I have put it?
五） can 用於客觀事實的推測，可能出現的某種現象
He is friendly, but sometimes he can be difficult to get along with.
The northern part of China is cold, but sometimes it can be warm.
Nowadays, graates can have difficulty finding jobs.
六） be able to do sth. 經過努力能達到
4. The fire in the hotel spread fast but fortunately all of the people were able to ran out. (經過努力能達到)
May \ might
一）祝願（祈使句） May you return in safety. (祝願)
二）可以（語氣弱）. May I come in ? (可以)
三）表推測，不太可能的推測 Helen may go on the trip with us, but she isn』t quite sure yet.
四）may as well do sth. Now that you are here, you may as well try your best.
may well do sth. He may not well go with us—he hates travel.
五）might用於虛擬 If he came here tomorrow, he might have a chance of talking with her.
Will
一）意願、決心、習慣性、傾向性、請求
1. I』ll do my best . (意願)
2. I will never do such a thing again. (決心)
3. Fish will die without water. (習慣性、傾向性)
4. Will you give me a piece of paper? (請求)
二）區分於be going to, 表示沒有計劃，臨時決定
---I』m sorry. I forgot to send the letter for you.
--- It doesn』t matter. I will go myself.
Would He promised he would never smoke again. (will的過去式)
Would you…? 「I would like to… (婉轉語氣)
Last year our English teacher would sometimes tell us stories in English after class.
(過去的習慣動作,比used to正式，並沒有「現已無此習慣」的含義。)
It would be about ten when he left home. (表料想或猜想)
Dare \ need
1. I dare to go there alone at night.
2. Do you dare to go there alone at night? = Dare you go there alone at night?
3. I don』t dare (to )go there alone at night. = I dare not go there alone at night.
dare say\ dare tell \ dare speak
4 needn』t have done 本沒有必要做，但是做了
You needn』t have waited for her, as she didn』t go there.

情態動詞+ do 表示對現在的推測
情態動詞+ have done 表示對過去的推測（對過去的一種結果的假設或虛擬）
(1) should (not) / ought (not) to have done本（不）應該做某事，但卻沒有做或做了，含有責備或後悔之意。
例如： —I』m sorry. I _________at you the other day. B
—Forget it. I was a bit out of control myself.
A. shouldn』t shout B. shouldn』t have shouted
C. mustn』t shout C. mustn』t have shouted
(2) could have done本來能夠做某事但未做。例如：
Thank you for all your hard work last week. I don』t think we ______ it without you. B
A. can manage B. could have managed
C. could manage D. can have managed
(3) needn』t have done本沒有必要做某事但卻做了。要注意needn』t do則表達「沒有必要去做某事」，時間上應該是現在或將來。例如：
—Catherine, I have cleaned the room for you. B
—Thanks. You ________ it. I could manage it myself.
A. needn』t do B. needn』t have done
C. mustn』t do D. shouldn』t have done
(4)would (not) have done本來(不)會發生某事，但卻（發生了）或沒有發生。常用於虛擬條件句或含蓄虛擬條件引導的虛擬語氣，表示對過去所發生事情結果的假設。例如：
He hesitated for a moment before kicking the ball, otherwise, he ________ a goal. D
A. had scored B. scored
C. would score D. would have scored
(5) might have done表示「本來可能……」，但實際上沒有發生的事。例如：
What a pity! Considering his ability and experience, he ________ better. D
A. need have done B. must have done

⑼ 高中英語情態動詞

605情態動詞講解

一can 1.表"能力"I can lift the stone. I can speak English while he can't. Who can play the violin? He got up early yesterday so that he could catch the early bus.
could 表過去的能力。
注；1。can 與be able to表能力時的區別：
① 形式上；can有兩種形式can 與could，而be able to有更多的形式。
is(are)able to, was able to ,, has been able , will be able to , would be able to 等。
be able to 只表能力而can 還可表"可能性"，"驚異","許可"等。
② could與was able to表過去能力的差別：均表過去的能力，但was（were）able to還可表業已成功的行為（即：動作確實做了）。
2．表"許可"You can go now. You can use my dictionary. You can have a rest.
-Can I smoke here?
-No, you can't.
註：用could代替can在疑問句中，語氣客氣委婉，但在時間上還指現在.Could you lend me your bike? Could you tell me how to get to the station?
注意：回答由could引起的問句，仍用can 而不用could。
-Could you wait a few more minutes?
-Yes, I can.
3.表猜測"可能"，一般用於疑問句和否定句。
-Can the news be true? -It can't be true. Where can he be?
註：(1)can't表"不可能"，語氣斷然否定。
(2) could在賓語從句中表過去的可能性，其它情況一般還表示現在的可能性只是語氣比can委婉和更加不肯定。 I thought he could come .
(3) can 亦可用於肯定句表可能，但表示的是邏輯推理上的可能性（或理論上的），非主觀臆斷。There can be no noise on the moon because of sound being carried by the air .
(4) can(could)…have done或can(could)…have been(done)用於疑問句或疑問句表對過去時或完成時的揣測。
What can have happened to him ? He can not have read the book. He can't have been to Beijing.
4.表"驚異""驚訝"：How can you be so impolite? How can you say that?

二. may 表"允許""許可""允諾"（征詢對方許可）。
You may go now . May I use your bike? You may keep the book for 2 weeks .
注意：(1)其否定形式may not表示不可以，但更常用must not來代替may not表示"不可以"，"禁止"。 -May I watch TV after supper?
-Yes, you may.(No, you mustn't .或No, you may not.或No, you'd better not.)
(2)與can的比較：may比can更正式。May I know your name? May I (he, we…)….?
×May you….? (May you have a good journey! 此處表祝願)
（3）。might代替may用於疑問句，更客氣禮貌些，回答時仍用may。
-Might I use your telephone? -Yes, you may .
(4)might not 不表示"不允許"
2．表"可能"。（1）用於肯定句和否定句（因為May I…?表徵詢許可）。
The news may be true . He may not be at home now. I think he may come today(tomorrow).
However fast you may run, you can't catch the fast train.
(2)用might語氣更加不肯定，但指現在或將來，只有在賓語從句中might do（be）才表示過去可能性。 He might come today(tomorrow). She might have some fever .
I thought you might like something to read, so I brought some books for you .
She said she might not be at home.. I might be busy tomorrow.
(3)may not 與cannot的區別： may not"可能不"，cannot "不可能"。
比較The news may not be true.
The news can't be true .
(4) may(might)(not)+have done(been)表對過去或完成時的揣測。
Something may have happened to him . He may have been to Beijing .
3.表祝願May you be happy! May you have a pleasant journey!
綜合性補充；（1）could have done和might have done 還可以用於虛擬語氣而can(may)have done 只用於揣測。
（2）表揣測用於反意問句的情況。

三must （無詞形變化）
（1）。表"必須"，"應該"，"務必" must not(mustn't)表"禁止"，"不許"，"不準"，"不可以"。 Everyone must attend the lecture. The work must be finished as soon as possible.
You mustn't lend it to others.
注；對must問句的回答。 -Must I go there now?
-Yes, you must.
-No ,you ①needn't. ②need not ③don't have(got) to ④don't need to.
2.must表推測"一定"，"必定"，一般只用於肯定句，亦即用於疑問句和否定不表揣測。
（1）對現在He must be at home now. You must be hungry after the long walk.
The Chinese language must have the largest number of speakers.
(2)對進行時。 He must be sleeping now(at that time).
（3）對過去時或完成時。
It must have rained last night. He must have fallen asleep(then).
He must have gone to Beijing yesterday. She must have been young when she got married .
注意其反意問句。
3 .must表不可避免的傾向。 All men must die.
4 . must 表"偏偏"，"不巧" My car must break down.我的車偏偏壞了。

四.have to "不得不"
1. 與must的區別 （1）must表說話人的主觀看法，而have to表客觀需要。
比較：I have to stop smoking .(外界壓力，客觀情況使然)
I must stop smoking.（主觀認為）
2.must只有一種形式而have to有更多的形式have to, has to ,had to ,will have to 等等。
I thought I must go there.
3.have to 的疑問，否定均須藉助於do。 Does he have to go there now ?
不說Has he to go there now?
He has to go there now ,doesn't he? The work has to be finished before 10 o'clock..
4.must與had to的差別： had to還可以表示業已完成或實現的動作（即；動作確實做了）。
I had to stay at home last night.

五.ought to與should
1.兩者的差別ought to語氣重，偏重"責任，義務，道德、法律"等方面，"總應該"。
You ought to follow your father's advice.
注意其疑問及否定形式 -Ought he to go ？-Yes, he ought (to).
2. ought to (should)have done 表本應該做而實際未做。
You ought to have told him about the news . He shouldn't have been told about the news.
本不應該把此事告訴他（而實際告訴了）。
You should have got up early .
should have done 還可表虛擬語氣
用於第一人稱
3. ought to還可表示非常有可能的事。
It ought to be a close game , most probably. It ought to be a fine day tomorrow.(極可能是好天)

六.need （1） 作為情態動詞①常用於疑問句和否定句②無人稱和時態的變化③疑問否定藉助於need本身④後跟動詞原型。
（2）need作為實義動詞① 有人稱和時態的變化（needs，needed）②疑問否定藉助於do③可有自己的賓語（可以是名詞，代詞，不定時）④不受什麼句型限制。
I need a pen . I need to go there. He didn't need to go there. Do I need to go there? Need I go there now ? You needn't go there now. ×I need go there now.
3.needn't have done表"本不必做而實際做了"。 You needn't have hurried.你（當時）本不該匆忙。
4．對need引起的一般問句的回答： -Need I go now ? -Yes ,you must .-No, you needn't.

七.dare 1，（1）作為情態動詞 ①無人稱和時態變化②常用於疑問句和否定句③跟不帶to的不定式。註：有固定說法I dare say…… How dare you say……?
2.實義動詞①有人稱和時態的變化②疑問和否定藉助於do③跟帶to的不定式。
比較 情態動詞 實義動詞
肯定句 × He dared to do it .
否定句 He daren't to do itHe dare not do it. He didn't dare to do it .He doesn't dare to do it.
疑問句 Dare he do it?Dare he not do it? Does he dare to do it?Doesn't he dare to do it?
註：（1）有時可把dare的情態和實義動詞的用法揉合在一起。如；No one dared say that.
(2)在否定句中實義動詞dare後的不定式"to"符號可以省略。I don't dare(to)ask her.
2.daren't have done 表"本不敢做而實際做了"。

八.shall （此處講述的是shall情態動詞而非助動詞表時態）。
1． shall用於二，三人稱表"命令，警告。威脅，強制。允諾"等。
用於一，三人稱用來征詢對方意見或請求指示。
You shall do it as I say. Tell him that he shall have the book tomorrow.
表"允諾"相當於may或can
Shall he come at once?(征詢對方意見) where shall we meet ? Shall we take a walk together?
2.should (1)表"勸告，建議"Children should be taught to tell the truth.
I suggested he (should )go there. Was it necessary that my uncle (should) be informed?
(2)表"驚異"It's strange that he should have done such a thing.
（3）． 表"可能性"They should be there by now, I think.(98年高考已考過)。

九. Will 1。表"意志，意願，樂意"，用於各人稱 。（與will作助動詞表時態區分開來）。
I will tell you all about it.相當於I am glad to tell you all about it.
He won't go there.他不願意去那裡。
2． Will在疑問句用於第二人稱，表示詢問對方的意願或向對方提出請求。
Will you go with me for a walk? Do come to my birthday party , will you?
Will you please tell me how I can get to the station ? Won't you sit down?
3. 表示習慣性動作，有；"總是，總要，"，"慣於"的意思 。
Fish will die out of water。魚離開水總是要死的。
He will talk for hours if you give him the chance .你要給他機會的話他總是要談上幾個鍾頭 。

十.Would (是will的變形，與will的用法相對應。應把would作助動詞表時態區分開)。
1． 表"意願"用於人稱。 He said he would help us.他說他樂意幫助我們。
2． 表說話人的意願或向對方提出請求，語氣比will更客氣婉轉，但指的是現在時間。
Would you like some bananas ? I'd rather stay at home than go out .
Would you mind opening the window for me ?
注意：用would提出的一般疑問句，回答時要還原為will。-Would you help me with my lessons? -Yes, I will.
3. 表過去的習慣動作。
She would drop in on her teacher when she went to town .她總是要順便看一下老師。
Every day she would get up early at six o'clock.過去她總是每天6點起床。
She would sit like that for hours watching ships.她過去總是坐在那裡幾個鍾頭看船。
3． 用於虛擬語氣或用於科幻作品中。Such would be our home in the future.
我們未來的家庭就是這樣。

十一. used to表示"過去常常"（而現在並非這樣）。
We used to be good friends. There used to be a temple here. He used to go to work by bus。
He used to like fish.他過去愛吃魚。
改為否定句：He didn't use to like fish .(He usedn't to like fish.或He used not to like fish).
改為疑問句：Used he to like fish？ 或Did he use to like fish?回答Yes, he used to .
否定式問句Use(d)n't he to like fish?
反意問句There used to be a temple here, usedn't there? （或didn't there？）
1．註：would與used to表"過去常常"的差別：
①used to表現在已不復存在的過去習慣或狀態有今惜對比的含義，而would則不涉及現在。
He used to like fish.(現在不了)。He would like fish.（現在是不是這樣，不知道）。
②used to 表不確定的過去時間，常常不帶表確指過去的時間狀語，而would常帶。
③ would 表過去屢次發生的動作，所以不表狀態。而used to可表狀態也指動作。
？There would be a temple here.
④ would 有自覺自願的含義，通常譯作"總是，總要"，而used to只說明過去的事實，無自覺自願的含義，常譯作"過去常常"。Her would sit there, watching ships.（個人願意）。
2．①used to do sth.過去常常做。。。②be (get)used to（doing）sth.習慣於。。。③be used to do sth.被用來做。。 與練習結合，體會掌握情態動詞的用法。

⑽ 高一的英語情態動詞的用法

情態動詞用法歸納

情態動詞有can (could), may (might), must, have to, shall (should, will (would), dare (dared), need (needed), ought to等。 情態動詞無人稱和數的變化；不能單獨使用，必須與其後的動詞原形構成謂語

一、 can, could

1) 表示能力（體力、知識、技能）。

Can you lift this heavy box?（體力）

Mary can speak three languages.（知識）

Can you skate?（技能）

此時可用be able to代替。Can只有一般現在時和一般過去式；而be able to則有更多的時態。

I』ll not be able to come this afternoon.

當表示「經過努力才得以做成功某事」時應用be able to，不能用Can。如：

He was able to go to the party yesterday evening in spite of the heavy rain.

2) 表示請求和允許。

-----Can I go now?

----- Yes, you can. / No, you can』t.

此時可與may互換。在疑問句中還可用could,

might代替，不是過去式，只是語氣更委婉，不能用於肯定句和答語中。

---- Could I come to see you tomorrow?

---- Yes, you can. ( No, I』m afraid not. )

3) 表示客觀可能性（客觀原因形成的能力）。

They』ve changed the timetable, so we can go by bus instead.

This hall can hold 500 people at least.

4) 表示推測（驚訝、懷疑、不相信的態度），用於疑問句、否定句和感嘆句中。

Can this be true?

This can』t be done by him.

How can this be true?

二、 may, might

1) 表示請求和允許。might比 may語氣更委婉，而不是過去式。否定回答時可用can』t

或mustn』t，表示「不可以，禁止」。

----Might/ May I smoke in this room?

---- No, you mustn』t.

---- May/Might I take this book out of the room?

---- Yes, you can. (No, you can』t / mustn』t. )

用May I...？征徇對方許可時比較正式和客氣，而用Can I...？在口語中更常見。

2）用於祈使句，表示祝願。

May you succeed!

3) 表示推測、可能性（不用於疑問句）。

might不是過去式，它所表示的可能性比may小。

1．He may /might be very busy now.

2．Your mother may /might not know the truth.

三、 must, have to

1) 表示必須、必要。

You must come in time.

在回答引出的問句時，如果是否定的，不能用mustn』t（禁止，不準），而用needn』t, don』t have to（不必）.

---- Must we hand in our exercise books today?

---- Yes, you must.

---- No, you don』t have to / you needn』t.

2) must是說話人的主觀看法， 而have to則強調客觀需要。Must只有一般現在時， have to 有更多的時態形式。

1． he play isn』t interesting, I really must go now.

2． I had to work when I was your age.

3) 表示推測、可能性（只用於肯定的陳述句）

1． You』re Tom』s good friend, so you must know what he likes best.

2． Your mother must be waiting for you now.

四、 dare, need

1) dare作情態動詞用時, 常用於疑問句、否定句和條件從句中, 過去式形式為dared。

1． How dare you say I』m unfair?

2． He daren』t speak English before such a crowd, dare he?

3． If we dared not go there that day， we couldn』t get the beautiful flowers.

2) need 作情態動詞用時, 常用於疑問句、否定句。在肯定句中一般用must, have to, ought to, should代替。

1．You needn』t come so early.

2. ---- Need I finish the work today?

---- Yes, you must. / No, you needn』t.

3) dare和 need作實義動詞用時， 有人稱、時態和數的變化。在肯定句中，dare後面常接帶to的不定式。在疑問句和否定句中，dare後面可接帶to或不帶to的不定式。而need後面只能接帶to的不定式。

1. I dare to swim across this river.

2. He doesn』t dare (to) answer.

3. He needs to finish his homework today.

五、 shall, should

1) shall 用於第一人稱，徵求對方的意見。

What shall we do this evening?

2) shall 用於第二、三人稱，表示說話人給對方的命令、警告、允諾或威脅。

1. You shall fail if you don』t work hard.(警告)

2. He shall have the book when I finish it.(允諾)

3. He shall be punished.(威脅)

六、 will, would

1) 表示請求、建議等，would更委婉。

Will / Would you pass me the ball, please?

2) 表示意志、願望和決心。

1. I will never do that again.

2. They asked him if he would go abroad.

3) would表示過去反復發生的動作或某種傾向。would表示過去習慣時比used to正式，且沒有「現已無此習慣」的含義。

1. During the vacation, he would visit me every other day.

2. The wound would not heal.

4) 表示估計和猜想。

It would be about ten o』clock when she left home.

七、 should, ought to

1) should, ought to表示「應該」，ought to表示義務或責任，比should語氣重。

1. I should help her because she is in trouble.

2. You ought to take care of the baby.

2) 表示勸告、建議和命令。should, ought to可通用，但在疑問句中常用should。

1. You should / ought to go to class right away.

2. Should I open the window?

3) 表示推測

should , ought to (客觀推測), must(主觀推測)。

1.He must be home by now. (斷定他已到家)

2.He ought to/should be home by now.(不太肯定)

3. This is where the oil must be.(直爽)

4. This is where the oil ought to/should be.(含蓄)