❶ 高中英語情態動詞
①只復做情態動詞:must,can,may……
②可做制情態動詞又可做實義動詞：如：need, dare
③具有情態動詞特徵：have(had,has) to,used to, ought to
④可做情態動詞又可作助動詞：如：shall(should),will(would)[
注意
mustn't代表強烈禁止 must表示主觀，have to表示客觀。
美式英語中常用must not 而不用 mustn't. mayn't,mightn't和shan't也很少用
常用
can (could), may (might), must, need, ought to, dare (dared), shall (should), will (would)
❷ 高中英語 情態動詞練習
dare作為特殊情態動詞，常用於疑問和否定句。無三單過去式變化。後接省略to的不專定式動詞屬。
dare作為普通實義動詞，常用於肯定句。有三單和過去式變化。後接to do不定式動詞。
根據句意及dare用法，a和c錯誤。只有b和d正確。根據時間判斷，選b為合適正確答案。
❸ 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專義,簡明列出個語法的注意點,對於應試生而言屬是非常有用的語法補習課!
希望對你有幫助。
❹ 高中階段英語語法「情態動詞」以及「非謂語動詞」的重點和難點是什麼
情態動詞
情態動詞 (Model Verbs) 又稱為情態助動詞 (Model Auxil-iaries)。英語中助動詞主要有兩類：一是基本助動詞，如have, do, be；二是情態助動詞，如may, must, need等。情態動詞與其他動詞連用表示說話人的語氣。情態動詞可表達建議、要求、可能和意願等。情態動詞沒有人稱和數的變化。在大學英語四、六級考試中，情態動詞部分重點測試以下內容：
（1）情態動詞+行為動詞完成式
（2）情態動詞+行為動詞進行式
（3）情態動詞+行為動詞完成進行式
（4）某些情態動詞的特殊用法
一、情態動詞+行為動詞完成式
情態動詞+行為動詞完成式即「情態動詞+ have + v-ed分詞」，表示對過去行為或動作進行推測、評論或判斷。
1. must have v-ed
must have v-ed 表示推測過去某事「一定」發生了。其否定形式為：can』t / couldn』t have v-ed, 表示過去不可能發生某事。例如：
1）Since the ditch is full of water, it must have rained last night.
2）You couldn』t have met my grandmother. She died before you were born.
2. could have v-ed
could have v-ed 表示推測過去某動作「很可能」發生了。例如：
1）「The dictionary has disappeared. Who could have taken it?」
2）「Tom could have taken it. He was alone yesterday.」
3.may / might have v-ed
may / might have v-ed 表示推測過去某事「也許」發生了.may 比 might 表示的可能性在說話人看來稍大些。例如：
I can』t find my keys. I may / might have left them at the school yesterday.
4. ought to / should have v-ed 和 ought not to / shouldn』t have v-ed
ought to / should have v-ed 和 ought not to / shouldn』t have v-ed 用於對已發生的情況表示「責備」、「不滿」，分別表示「本應該…」和「本不應該…」。例如：
1）With all the work finished, I should have gone to the party last night.
2）You ought not to make fun of him. He is not the one you laugh at but learn from.
5. needn』t have v-ed
needn』t have v-ed 表示過去做了某事，但沒有做的必要， 意為「本沒必要…」。例如：
You needn』t have waken me up; I don』t have to go to work today.
註：表示推測過去某動作發生的可能性時，就表示的可能性程度而言，must最大，could其次，may更次之，might最小。例如：
「I wonder how Tom knew about your past.」
「He must / could / may / might have heard of it from Mary.」
二、情態動詞+行為動詞進行式
情態動詞+行為動詞進行式（即情態動詞+ be + v-ing形式），表示推測或評論某動作現在是否正在進行。例如：
1）He must be playing basketball in the room.
2）She may be staying at home.
三、情態動詞+行為動詞完成進行式
情態動詞+行為動詞完成進行式（即情態動詞+ have been + v-ing 形式），表示推測或評論過去某動作是否正在進行或一直在進行。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.
四、某些情態動詞的特殊用法
1. need
考試中主要測試 need 作情態動詞與作實義動詞的區別，對此，可參見表1.need 作情態動詞時，後面跟不帶to 的動詞不定式，即 「need to」。通常用在疑問句和否定句中，表示詢問是否有「必要」，其否定形式為needn』t，表示「不必」；疑問形式為 Need … do? 極少用於肯定句。例如：
1）I don』t think we need turn the light on at that time.
2）Need you ride a bike to school?
情態動詞need與實義動詞need 在時態、肯定、否定結構上的對比見表1。
2. dare
考試中主要測試dare作情態動詞和作實義動詞的區別。
情態動詞dare 與實義動詞dare 在時態、肯定、否定、疑問結構上的對比見表2。
3. can 和 may
考試中主要測試can，may或could，might表示可能性的區別及對may構成的疑問句的回答。
時態 情態動詞need 實義動詞 need
現 You need (not) do You (don』t) need to do
在
時 He need (not) do He needs (doesn』t need) to do
過 You needed (didn』t need) to do
去
時 He needed (didn』t need) to do
將 You need (not) do You will (not) need to do
來
時 He need (not) do He will (not) need to do
句型 時態 動詞
情態動詞dare 實義動詞 dare
肯定句 現在時 dare to 少用 dare/dares to do
過去時 dare to 少用 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
（1）can, could, may, might都可以表示可能性.can, could表示潛在的可能性或理論上或邏輯判斷上存在的可能性；而may, might則表示事實上的可能性。此外，can還具有「有能力」的意思，而may與might則不具此意。例如：
1）According to the weather forecast, it may rain tomorrow.
2) Any man with a little sense can see that he is wrong.
（2）May I / we …？這一類疑問句的肯定回答為Yes, please.或Certainly；否定回答為Please don』t.或No, you mustn』t. 例如：
「May we leave now?」 「No, you mustn』t. You haven』t finished your home work yet.」
4. can 和 be able to
can 與 be able to 都可以表示能力，但兩者在用法上有點差異：can (could)表示主觀能力，不表示意願，它的將來時用will be able to; be able to表示主觀意願，強調要克服困難去做某事。例如：
1）My grandma is over seventy, but she can still read without glasses.
2）He is able to give up his bad habits.
5. must 和 have to
must 和 have to 都可以表示「必須」，但有幾點區別：
（1）must 強調「內在的職責」、「義務」，而have to 強調「外界壓力」、「不得已而為之」。
（2）have to可用於多種時態，而must一般用於現在時，其過去時與將來時分別由had to與shall / will have to代替。
（3）在回答must引起的問題時，如果是否定的答復，不能用mustn』t，而要用needn』t或don』t have to，因為mustn』t是「一定不要」、「一定不能」的意思。例如：
1）You must come to the classroom before eight.
2）It is raining hard outside, but I have to leave now.
3）「Must we do it now?」 「No, you needn』t.」
6. used to +v, be used to +v-ing和be used to +v
（1）used to +v意為「過去常常」，「過去一直」；be used to +v-ing / n（名詞）意為「習慣於」；be used to +v意為「被用來（做某事）」。
（2）used to只表示過去，而be used to +v-ing / n可表示現在、過去或將來。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.
7．用作情態動詞的其他短語
would rather, would sooner, would (just) as soon, had rather, had better, had sooner, can not but, may (just) as well等可用作情態動詞。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.
註：這些短語後一般直接跟動詞原形.would (had) rather, would (had) sooner, would (just) as soon後可跟that 引導的從句，that 常省去，從句要用虛擬語氣。對現在和將來的假設用過去時，對過去的假設用過去完成時。例如：
1）I would rather you came on Sunday.
2）I would sooner you hadn』t asked me to speak yesterday.
非謂語動詞
語法講座
非謂語動詞是高中語法的重點，也是難點，學生常常對此感到頭疼。其實只要理解並掌握非謂語動詞各種形式的特點，做起題來會很輕松。我們先來看看非謂語動詞的各種變化形式。熟悉知道了非謂語動詞形式後，做題時可分四步分析。
一、分析句子結構
1. ________many times , but he still couldn't understand it .
2. ________many times , he still couldn't understand it .
A. Having been told . B. Told
C. He was told D. Though he had been told
3. ________to the left , you'll find the post office .
4. If you ________to the left , you'll find the post office .
5. ________to the left , and you'll find the post office .
A. Turning B. To turn C. Turn D. Turned
分析：句1. 用連詞but 引導並列句子，因此，前面也是個獨立句子成分，故選C。
句2. 句中用逗號隔開，且無連詞引導，因此，前面不是句子結構，只是句子的一個成分，故選A，用非謂語動詞作狀語。
句3. 同句2，選A 。
句4. 前面用if 引導從句，故選C ，構成從句謂語。
句5. 同句1，選C。
二、分析邏輯主語
確定要選非謂語動詞之後，第二步要分析其邏輯主語。非謂語動詞雖不能作謂語，但仍具有動詞特點，其邏輯上的動作執行者就叫做邏輯主語。非謂語動詞作狀語時，其邏輯主語須和句子的真正主語一致。若不一致，則須加上自己的邏輯主語。
1. ________no buses , we have to walk home .
A. There being B. It were C. There were D. It being
2. ______Sunday I shall have a quiet day at home .
分析：句1. 表示「沒有公共汽車」，應用「there be」結構，即邏輯主語是「there」，故選A 。
句2. 同理選D。
三、分析語態
分析語態就是在確定邏輯主語之後，分析非謂語動詞和邏輯主語在搭配使用時是主動還是被動關系。
1. ______from space , the earth looks blue .
2.______from space , we can see the earth is blue .
A. Seen B. Seeing C. To see D.See
這兩個題選項中的非謂語動詞都沒有加自己的邏輯主語, 因此其邏輯主語就是句子的主語。
分析：句1. 「地球」被「看起來」，表被動，故選A，用過去分詞表被動。
句2. 我們「主動看……」即表主動，故選B。
3. The dirty clothes ______ , the girl hung them up outside .
4. ______ the dirty clothes ,the girl hung them up outside .
A. was washed B. washed C.were washed D.having washed
分析：句3. 前面應用非謂語動詞作句子的狀語，邏輯主語是「the dirty clothes」，和動詞搭配表示「衣服被洗」，故選B。
句4. 邏輯主語為句子的主語「the girl」，表示「女孩洗衣服」，為主動關系，故選D。
四、分析時態，在選定了主動或被動後，還要考慮動作發生的時間問題，即時態。
1. The building ______now will be a restaurant .
2. The building ______next year will be a restaurant .
3. The building ______last year is a restaurant.
A. having been built B.to be built
C.being built D. built
句1中 now 說明大樓正在被修，故用進行式，選C。
句2中next year 說明大樓將在明年被修，故用表將來的不定式，選B。
句3中 last year 說明大樓已被修，但不能選，因為現在分詞的完成式不能作定語，故用過去分詞，選D。
又如：
1. He stood there______for his mother .
2. ______for two hours , he went away .
A. waiting B. to wait C. waited D.Having waited
句1表示「站在那等」，兩個動詞同時發生，故選A作伴隨狀語。
句2表示已經等了兩個小時，發生在謂語動詞「went away 」之前，故用完成式，選D 。
需要注意的是，非謂語動詞的否定也是常考的項目，要認清否定形式，非謂語動詞的否定都應將not 放在前面。
如：
What is the reason for ______there ?
A. not your going B. not your go
C. your not going D. you not to go
鞏固練習:
1. ______won't be of much help .(A)
A .Tom's going B. Tom going C. Tom to go D. Tom goes
2. They managed _____the meeting room before the guests arrived. (C)
A. finishing to clean B. finishing cleaning
C. to finish cleaning D. to finish to clean
3. We must find a room big enough _____.(B)
A. for all of us to live B. for all of us to live in
C. to live in all of us D. of all of us to live
4. _____a teacher , I should set a good example to students . (A)
A. Being B. Having been C. To be D. As I being
5. _____a teacher ,one must first be their pupil . (C)
A. Being B. Having been
C. To be D. To have been
6. It was stupid _____ your advice. (C)
A. for me not to take B. for me not taking
C. of me not to take D. of me not taking
7. The teacher told him to speak louder _____by , everybody. (A)
A. so as to be heard B. so as to hear
C. in order that heard D. in order to hear
8. They suggested _____ the sports meet till next Tuesday. (B)
A. us to put off B. our putting off
C. us of putting off D. our put off
9. The doctor gave me some medicine , _____ three times a day before meals. (C)
A. to take B. to be taking C. to be taken D. I took it
10. Thanking them for their kindness , he said that the old lady really appreciated _____by them. (D)
A. visiting B. visited
C. to be visited D. being visited
11. _____made her parents very angry . (B)
A. Jane's engaging Black B. Jane's being engaged to Black
C. Jane having engaged to Black D. Jane has engaged to Black
12. Don't you think it any good_____in public places? (B)
A. forbidding smoking B. to forbid smoking
C. to forbid to smoke D. forbidding to smoke
13. China is a _____ country and we should introce _____ science and technology from the _____ countries. (B)
A. developed; advanced; developed B. developing;advanced;developed
C. developing;advancing;developing D. developed; advancing ; developing
14. _____, the work can be done much better . (C)
A. Given more time B.We had been given more time
C. More time given D. If more time had given
15. _____from space , the earth , with water _____seventy percent of its surface , looks like a "blue ball". (D)
A. Seen ; covered B. Seeing ; covering
C. Seeing; covered D. Seen; covering
16. People always shake hands with each other when _____. (C)
A. to introce B. introce C. introced D. introcing
17. _____, tears ran down her pale face. (A)
A. No word said B. Say no word
C. Not saying a word D. Without saying a word
18. Tigers _____ meat -eating animals , _____meat . (A)
A. belonged to ;fed on B. belonging to ; feed on
C. were belonged to ; feed on D. belonging to ; feeding on
19. We must take measures to prevent our earth _____. (C)
A. to be polluted B. from polluting
C. from being polluted D. from polluted
20. As the stone was too heavy to move , I left it _____ on the ground . (C)
A. laying B. lay C. lying D. lain.
❺ 高中英語常見的情態動詞且它們的意思
情態動詞
★基本概念和用法：
情態動詞是一類本身具有一定詞義的動詞，但沒有人稱和數的變化，也不能單獨使用，它必須要和其他動詞連用作句子的謂語。情態動詞可表示語氣、建議、要求、可能和意願等。常用的情態動詞有：can, could, may, might, must, shall, should, will, would, ought to, need, dare等。
★情態動詞的基本用法
1. can (could) 表能力、允許、(從理論上或邏輯上判斷）可能性以及表驚異、懷疑、不相信等態度（主要用於否定句、疑問句或感嘆句中）。could指過去或表示語氣委婉。例如：
The boy can speak three languages.這個孩子能說三種語言.
Can I borrow the book from the library?我能從圖書館里借書嗎？
I could swim when I was eight.我八歲的時候就能游泳。
2. may (might) 表允許、可能性、祝願等。might可以指過去，也可指現在，語氣更委婉。例如：
May (Might) I ask for a photo of your baby?我可以要一張你孩子的照片嗎？
She may be still waiting for us.她也許還在等我們呢。
May you have a happy holiday!祝你假期愉快！
3. will (would) 表意願(用於各種人稱的陳述句)、請求(用於疑問句)、某種傾向或習慣性動作等。would指過去或表示語氣委婉。例如：
Will you come this way, please?請這邊來。
Would you please close the window?請你關好窗子好嗎？
Fish will die without water.魚離開水會死。
Every time she was in trouble, she would go to him for help.每當她遇到麻煩，她都會找他幫忙。
4. must 表命令、推測（現在、過去或將來的猜測）、偏偏等含義。例如：
We must do everything step by step.你必須按部就班的做事情。
He must be ill. He looks so pale.他一定是病了，臉色看起啦這么蒼白。
It can』t help. He must go with me.這不管用，他必須跟我走。
5. shall 用於第一、三人稱疑問句中表示請求或徵求對方意見; 用於第二、三人稱陳述句中表示允諾、命令、警告、威脅、決心等。例如：
Shall I get you a cup of coffee?要我給你杯咖啡嗎？
You shall have my answer tomorrow.明天你就能得到我的答復。
He shall be sorry for it one day, I tell you.我告訴你，他總有一天會為此後悔。
6. should / ought to 表義務（因責任、義務等該做）、推測、建議等。ought to 的口氣比should稍重。例如：
You should be polite to your teachers.你應該對老師有禮貌。
You are his father so you ought to take care of him.你是他的父親，因此你應該照顧他。
★情態動詞的回答
疑問式
肯定回答
否定回答
Could I…?
Yes, you can.
Yes, go ahead.
No, you can』t.
Must I…?
Yes, you must.
No, you needn』t / don』t have to.
May I …?
Yes, of course.
Yes, please.
Yes, go ahead.
No, you mustn』t.
No, you can』t.
Will you ...?
Would you…?
Certainly. / Sure. / All right.
I』m sorry. I can』t.
No, thank you.
No, I won』t.
★辨析
1. can (could) 與be able to
can表示「能力」時，和be able to相當，許多場合都可以互換。但當敘述過去經過一番努力才能完成的事情或前面有特殊說明時，只能用be able to，且be able to可以用於各種時態。例如：
I can / am able to stand on my head.我能倒立。
I』m sorry I haven』t been able to answer your letter in time.非常抱歉我沒有能夠及時回答你的問題。
2. must與have to
must與have to都含有「必須」之意，must含有說話者的強烈決心 (表示主觀的看法)，have to則表示外部因素或習慣使然 (即表示客觀的必要，作「不得不」解)，且have to 有更多的時態形式。例如：
He said that he must work hard. （主觀） 他說他必須努力學習。
My brother was very ill, so I had to call the doctor in the middle of the night. (客觀) 媽媽病了，因此我不得不在半夜裡叫醫生。
We』ll have to help them as much as we can.我們將不得不盡力幫助他們。
3. would 與used to
would表示過去的習慣性動作時，只表示過去的情況，與現在無關，往往要帶有一個特定的時間狀語；used to可表示過去的習慣動作或狀態，強調「現在已無此習慣」。例如：
Whenever we were in the country, we would play hide-and-seek in the fields. 無論什麼時候我們在鄉下，我們都會玩捉迷藏。
We used to play hide-and-seek in the fields.我們過去常在野外玩捉迷藏。
★ 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. 菲利普也許在車禍中嚴重受傷的。
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」的意思。
--- Linda has gone to work, but her bicycle is still here.琳達已經去工作了，但是她的自行車還在這里。
---She must have gone by bus.她一定是坐公車去的。
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.你在實驗中本該更認真一點的。
He ought not to have thrown the old clothes away.你本不該舊衣服扔掉的。（事實上已扔了。）
注意：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.我穿的很暖和去度假，但是我沒有必要這樣穿，天氣太熱了。
❻ 高中英語情態動詞題
答案：3 should
翻譯：這位衣著時髦的女士在時裝店裡面盜竊時被逮個正著。專說來也奇怪，她屬竟然/居然會做這么一件事。
解釋：
should有一個特殊用法，意思是「居然/竟然」，表示說話人不相信或懷疑的語氣。
此題從前後文中的well-dressed lady可以看出此含義。
如果你滿意我的答案，敬請點擊「選為滿意回答」，謝謝！
❼ 高中英語 情態動詞表推斷的時候怎麼區別
你好這些情態動詞的用法如下：
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
例如：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.
最基本的虛擬語氣句型:
主句用would/ should/ could/ might +動詞原形。
❽ 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。
❾ 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
❿ 高中英語：情態動詞+have done
can't have done,一定不可能做過某事,對過去發生的事作非常有把握的否定推測
couldn't have done多用在虛擬語氣當中回Without your help, we couldn't have finished our work last week so fast.沒有你的幫忙,我們答上星期不可能這么快完成工作.(實際上工作已完成)
"他一定在家裡",一般翻譯為He must be at home.