高二英语情态动词语法
高中英语语法系列情态动词
高中英语语法系列情态动词定义：情态动词表示说话人对某一动作或状态的态度。
特点：有一定词义；不受主语人称和数的变化影响；与主要动词的原形一起构成谓语。
情态动词：can/could ; may/might; must ;need ;will/would ; shall /should ; dare / dared ;used to ; ought to etc情态动词的基本用法1. can/coulda. 表能力，could 主要指过去时间1) Two eyes can see more than one .2) The girl could read before she went to school .* be able to do 意思同can/could ,但有较多时态表达形式；在表达过去某个事件有能力干什么时，could 表虽有能力，但不一定做了；was able to 指“不但有能力，而且实际做了”。
3) He _______ escape from the fire , but he went to save the girl .( could /was able to )4) Though the fire spread quickly , everyone ________ escape . ( could /was able to )b. 表可能5) The man there can’t be Mr. Zhang . He has gone to Nanjing .6) Look ! Someone is coming ! Who can it be ?7) * The temperature can fall to – 60 °C8) * He can make mistakes sometimes though he is clever .c. 表允许9) ---Can / Could I use your pen ?--- Yes , you can ./ Sure , go ahead . ( Yes , you could 错误 )d . 表惊异，怀疑，不相信等态度（用于否定句，疑问句或感叹句中）10) Can this be an excuse for being late ?11) No , no , this can’t be true .12) How can you be so careless!2. may / mighta. 表允许13) --- May / Might I ask you for a photo of your baby ?--- Yes , please . / Certainly ./ Please don’t ./ You’d better not ./ No , you mustn’t.b. 表可能，might 语气更加不肯定14) She may be at home .15) She might come to the party , but I am not sure .c .祝愿16) May you succeed !3 . musta . 表义务，意为“必须”，主观意志；而have to 为“不得不”，客观要求。
高中英语情态动词的用法
高中英语情态动词的用法高中英语情态动词的用法一概述情态动词的共性1)情态动词一般直接加动词原形, 除ought + to do sth .在否定句或疑问句中to 可以省略2)情态动词不会因为主语的人称与数的变化而发生变化3)当情态动词表达与说话同时或说话之后的情况,直接加动词原形(do sth/be done) .在简略回答时直接用情态动词(---Can you drive a car? ---- Yes, I can)（1）She said he might come to the farewell party (表达说话之后的情况)（2）She told me that he must be ill, for his face was pale(表达与说话同时情况)4)当情态动词表达说话时已发生的情况,加动词完成式( have pp/have been pp)在简略回答时用情态动词+ have (---- Did he go to the cinema? ---- No, he should have,but he had to finish a report)(1)She may have been there yesterday(2)She should have come to his rescue when he was trapped in the elevator last night(3)He must have been praised at the meeting the other day二情态动词用法1 can1)表示现在或将来的能力,2)表示可能性“可能”（1）在肯定句中指逻辑推理的可能性，不指具体的事情的可能性，即泛指的可能性但在否定句或疑问句中可以表达具体一件事情的可能性 A: Driving carelessly can be dangerous B: Too much stress can drive a person mad C: Everybody can make mistakes in his life D:There being too much snow on a highway can lead to accidents (2)在否定句中表示“不可能”A: He can?t be hungry B: She can?t have been criticized at last week?s meeting C: She can?t possibly be tired(3)在疑问句中表示“可能吗？”A: Can she have been to the scenic spot last Friday?(4)S + can have (been)+ pp表示“可能已发生某事”，一般用在否定句或疑问句，如： Can she have been to the scenic spot last Friday? (5）在肯定句中还可以表示“有时可能” A: Scotland can be very cold in winter B: He is a bad-tempered guy, but he can be quite charming when he wishes C: You can be very annoying总之can表示可能性“可能”时可以用在肯定句、否定句和疑问句中。
情态动词用法归纳总结
情态动词用法辨析情态动词用法can could may might will would be able to shall should ought to must have to had better need dare表能力表请求表许可表意愿表建议表义务表推测表需求表敢不敢一、情态动词表能力时：1、can 和could二者的相似之处在于：二者皆可指因本身的特质或客观条件的存在，主语可能能够完成某事，强调的是主语具备某种能力，而非真实去执行某个动作。
二者的不同之处在于：can 对应现在或将来，而could 对应过去。
2、be able to 和couldcould 表示过去具备某种能力，强调再过去有完成某件事的可能性，而不一定真正去实行。
当be able to 应用于过去时，was/were able to 表示过去某次具体的行为，强调在过去成功完成了某事。
二、情态动词表请求时：1、此时could ，might ，would 并不表示过去，而是在语气上比原型更加委婉客气。
2、当用第一人称提出请求时，常用can/could 和may/might 。
相较而言，could 与may在表请求的问句中出现的频率最高；might表发请求的语气最为委婉客气，因此反而很少见；而can则常用于熟人间的对话中。
语气强度：can>could/might>might3、当用第二人称提出请求时，常用can/could和will/would。
其中could和would 表达请求的语气更委婉客气；而can与will则常用于熟人对话中。
语气强度：can/will>could/would三、情态动词表许可时：1、与表请求不同，will/would不论前接第几人称，都表示主语本身的意愿，无需得到他人的“许可”，所以will/would不可以用于表请求的句中。
2、can和may二者都可以表示对现在或将来动作的许可，其中can的使用频率更高。
高中英语语法讲解： 情态动词
高中英语语法讲解：情态动词概述1.共有10个情态动词：can/could, may/might, will/would, shall, should, ought to, must；2个半情态动词need, dare2.特点：（1）情态动词后加动词原形（即不带to的不定式）一起构成谓语；（2）没有人称和数的变化；（3）多数情态动词有过去式，但其过去式有时并不表示时态，而只起“委婉或不确定语气”的作用。
Would you do me a favour? She may/might be watering the flowers now.3.情态动词在句子中可发挥不同作用，如表能力，表责任与义务，表推测，表征求允许，表请求，表建议，表语气态度等等He can/could run 100 meters in 11 seconds.You should/ought to/must work hard to win a gold medal.Can/Could/May/Might I watch the Olympics tonight?Will/Can/Could/Would you help me with my training?He might/may/could/should/ought to/will/must watch the football match tonight.I suggest that you should watch the opening ceremony.Can this be true?4.情态动词+do 表对一般现在或将来情况的推测情态动词+ be doing 表对正在发生的事情的推测情态动词+have done 表对过去已经发生的事情的推测一、can/could 的用法1.表能力(1) can do现在一般的能力(2) could do过去一般的能力(3) could have done过去有能力做但没做具体某事（4）was/were able to do = managed to do/ succeeded in doing 过去有能力做且做了具体某事。
高考英语必备语法：情态动词
高考英语必备语法：情态动词高考英语必备语法：情态动词情态动词一、can和could1、can的用法(1)表示体力和脑力方面的能力。
(2)表示对现在的动作或状态进行主观的猜测，主要用在否定句和疑问句中。
(3)表示可能性，理论上的可能性，意为“有时候可能会”，可用于肯定句。
(4)表示允许，意思与may接近。
(5)表示说话人的推测、怀疑、惊异、猜测或不肯定等，主要用于否定句、疑问句或感叹句中。
(6)can的特殊句型cannot…too / enou gh表示“无论怎么。
也不过分”。
“越。
越好”。
cannot but+ do sth.表示“不得不，只好”。
2、could的用法(1)表示能力，指的是过去时间。
(2)表示允许，指的是过去时间。
(3)表示可能，可以指过去时间，也可以指现在时间，表示语气缓和。
(4)委婉客气地提出问题或陈述看法，指的是现在时间。
主要用于疑问句，回答时用can。
3、can与could的区别can表推测时只用于否定句和疑问句(could无此限制)。
couldn’t的可能性比can’t小。
4、can与be able to的区别(1)现在时：无区别，但后者不常用。
(2)完成时;can没有完成时，此时要用have(has,had)been able to。
(3)将来时：can没有将来时，要用will be able to。
(4)过去时：could表示一般能力，was/were able to 表示在具体场合通过努力成功做成某事的能力。
二、may 和might1、may的用法(1)表示询问或说明一件事可不可以做。
(2)表示一件事或许会发生或某种情况可能会存在，通常用在肯定句和否定句中。
注意：表示可能性时，can’t语气强，表示“不可能”，may not语气弱，表示“可能不”。
2、might的用法(1)表示询问或允许，指的是过去时间。
(2)表示可能发生的事，可以指过去时间，也可以指现在时间，语气更加不肯定，可能性比may小一些。
外研版高二英语选修6 Module 1 语法指导：情态动词 及练习含答案
情态动词一、一些情态动词的常见用法1. can和may都可表示允许。
如：Can / May I take the book out?2. would和used to都可表示“（过去）常常”，但“would +动词原形”单纯表示过去经常做某事，而“used to +动词原形”表示过去常常做某事而现在不做了。
如：Bob would always turn and wave at the end of the street.I used to smoke, but I gave up a couple of years ago.3. may, might, could, must都可表示肯定推测，其中，might语气最弱，must语气最强。
must表推测时，否定句和疑问句中用can。
如：It may or may not rain.I'm not sure I'll go to Jeff 's Party. I might go to the concert instead.It could cost your life if you are not careful.You must be Mr. Smith. I was told to pick you up.The girl riding the bike can't be Mary. She's in New York.There's someone outside. Who can it be?二、一些情态动词的特殊用法1. should表示惊异，意为“竟然”。
如：It wasn't right that such near neighbours should not know one another.2. must表示“偏要，硬要”。
如：Must you worry her with questions, just when she's busy cooking?3. shall用于陈述句中，表示许诺、威胁、决心、规定等。
2022高考英语语法金点拨-情态动词
2022高考英语语法金点拨-情态动词一．情态动词的语法特点1）情态动词除ought 和have 外，后面只能接不带to 的不定式。
2）情态动词没有人称，数的变化，即情态动词第三人称单数不加-s。
二．情态动词的用法（Can/could、May/ might、Must、Shall/should、will/would、Dare、Need、ought to）（一）. Can1.差不多用法1）表示能力The parrot can speak three languages.2）表示要求/承诺Can/Could I borrow the book from the library.Yes.I can/No.I can’t。
(Could 不表过去式；只表语气更委婉，表要求只用于疑问句)3）表示可能性Shanghai can be very cold in March.2. Can 与be able to1）can could 表示能力；可能(过去时用could)2）表示过去成功地做了某事时，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.3）在否定结构中，二者能够互换。
3. can/could + have +p.p1）在否定、疑问句中表示“对过去发生行为的可能性推测。
The door was lacked. She couldn’t have been at home.2）在确信句中表示“本来能够做而未做” You could have been more careful.4.习语：cannot / can’t（never/hardly）do…too …“越……越好，如何也只是分”。
You cannot be too careful when you drive a car.驾车时候，越小心越好。
高中英语语法——情态动词总结(附带练习)
情态动词总结I 情态动词的特征：1.本身有词义。
2.不能独立作谓语。
2. 后接动词原形一起构成谓语。
3. 不随人称和数的变化。
II 情态动词各自的基本意义及用法：1.大多数情态动词（除表‘能力、许可、意志’外），都可以表示推测，其程度有差异。
按可能性程度的高低排列为：must﹥will ﹥would ﹥ought to ﹥should完全肯定完全可能很可能﹥can ﹥could﹥may ﹥might可能有可能2. 区分情态动词的否定含义：may not或许不、可能不might not可能不can’t 不可能mustn’t不许、禁止shouldn’t不应该needn’t 不必1.情态动词表推测的反意疑问句，简单来说，就是以情态动词后的时态为淮，如句子里有明确的时间状语，则以其为准。
2.以must 为例：E.g. 1. You must be hungry now, aren’t you?2. He must be watching TV , isn’t he ?3 Tom must have lived her for a long time, hasn’t he ?4. She must have arrived yesterday, didn’t she?注：如选择题中（以She must have arrived yesterday, didn’t she？为例）既有didn’t she又有hasn’t she则以didn’t she？为最佳答案。
IV 情态动词专项练习与解析一( ) 1. You _____ return the book now. You can keep it till next week if you like.A. can’tB. mustn’tC. needn’tD. may not( ) 2. Where is my pen? I _____ it.A. might loseB. would have lostC. should have lostD. must have lost( ) 3. I wish I _____ you yesterday.A. seenB. did seeC. had seenD. were to see( ) 4. I didn’t hear the phone. I _____ asleep.A. must beB. must have beenC. should beD. should have been( ) 5. If my lawyer _____ here last Saturday, he _____ me from going.A. had been; would have preventedB. had been; would preventC. were; would preventD. were; would have prevented( ) 6. He _____ you more help, even though he was very busy.A. might have givenB. might haveC. may have givenD. may give( ) 7. If it _____ for the snow, we _____ the mountain yesterday.A. were not; could have climbedB. were not; could climbC. had not been; could have climbedD. had not been; could climb( ) 8. Without electricity human life _____ quite difficult today.A. isB. will beC. would have beenD. would be( ) 9. A computer _____ think for itself, it must be told what to do.A. can’tB. couldn’tC. may notD. might not( ) 10. Jenny _____ have kept her word. I wonder why she changed her mind.A. mustB. shouldC. needD. would( )11. We _____ last night, but we went to the concert instead.A. must have studiedB. might studyC. should have studiedD. would study( ) 12. — Could I borrow your dictionary?— Yes, of course you _____.A. mightB. willC. canD. should( ) 13. Tom ought not to _____ me your secret, but he meant no harm.A. have toldB. tellC. be tellingD. having told ( ) 14. — If he _____, he _____ that food.— Luckily he was sent to the hospital immediately.A. was warned; would not takeB. had been warned; would not have takenC. would be warned; had not takenD. would have been warned; had not taken ( ) 15. Peter _____ come with us tonig ht, but he isn’t very sure yet.A. mustB. mayC. canD. will( ) 16. I told Sally how to get here, but perhaps I _____ for her.A. had to write it outB. must have written it outC. should have written it outD. ought to write it out( ) 17. I didn’t see your sister at the meeting. If she _____, she would have met my brother.A. has comeB. did comeC. cameD. had come ( ) 18. — Shall I tell John about it?—No, you _____. I’ve told him already.A. needn’tB. wouldn’tC. mustn’tD. shouldn’t ( ) 19. When a pencil is partly in a glass of water, it looks as if it _____.A. breaksB. has brokenC. were brokenD. had been broken( ) 20. It’s nearly seven o’clock. Jack _____ be here at any moment.A. mustB. needC. shouldD. can( ) 21.— There were already five people in the car but they managed to take me as well.— It _____ a comfortable journey.A. can’t beB. shouldn’t beC. mustn’t have beenD. couldn’t have been ( ) 22. Johnny, you _____ play with the knife, you _____ hurt yourself.A. won’t; can’tB. mustn’t; mayC. shouldn’t; mustD. can’t; shouldn’t ( ) 23. The fire spread through the hotel very quickly but everyone _____ get out.A. had toB. wouldC. couldD. was able to ( ) 24. — When can I come for the photos? I need them tomorrow afternoon.— They _____ be ready by 12:00.A. canB. shouldC. mightD. need( ) 25. — I stayed at a hotel while in New York.— Oh, did you? You _____ with Barbara.A. could have stayedB. could stayC. would stayD. must have stayed ( ) 26. — Will you stay for lunch?— Sorry, _____. My brother is coming to see me.A. I mustn’tB. I can’tC. I needn’tD. I won’t( ) 27. — Are you coming to Jeff’s party?—I’m not sure. I _____ go to the concert instead.A. mustB. wouldC. shouldD. might( ) 28. — Write to me when you get home.— _____.A. I mustB. I shouldC. I willD. I can( ) 29. I was really anxious about you, you _____ home without a word.A. mustn’t leaveB. shouldn’t have leftC. couldn’t have leftD. needn’t leave( ) 30. — Is John coming by train?— He should, but he _____ not. He likes driving his car.A. mustB. canC. needD. may专项练习（二）1. I didn’t see her in the meeting room this morning. She _____ at the meeting.A. mustn’t have spokenB. shouldn’t have spokenC. needn’t have spokenD. couldn’t have spoken2. One ought _____ for what one hasn’t done.A. not to be punishedB. to not be punishedC. to not punishedD. not be punished3. If you really want yourself to be in good health, you must ___ always ___ so much.A. not; be smokingB. not; have smokedC. not; to smokeD. be not; smoking4. With so much work on hand, you _____ to see the game last night.A. mustn’t goB. shouldn’t goC. couldn’t have goneD. shouldn’t have gone5. Most of the students felt rather disappointed at the English party. They say that it ______ better organized.A. had beenB. had to beC. must have beenD. could have been6. I’m surprised that he _____ in the exam.A. should failB. would have failedC. may have failedD. should have failed7. The little girl _____ there alone.A. not dare goB. dares not goC. dare not goD. dare not to go8. “Must we do it now?” “No, you _____.”A. won’tB. needn’tC. can’tD. don’t9. He said he would rather not _____ it right now.A. doingB. to doC. doD. to be doing10. You _____ to the meeting this afternoon if you have something important to do.A. needn’t to comeB. don’t need comeC. don’t need comingD. needn’t come11. Put on more clothes. You _____ be feeling cold with only a shirt on.A. canB. couldC. wouldD. must12. I _____ play football than baseball.A. would ratherB. had betterC. like betterD. prefer13. I thought you _____ like something to read, so I have brought you some books.A. mayB. mightC. couldD. must14. There was plenty of times. She _____.A. mustn’t have hurriedB. couldn’t have hurriedC. must not hurryD. needn’t have hurried15. The plant is dead. I _____ it more water.A. will giveB. would have givenC. must giveD. should have given16. You _____ return the book now. You can keep it till next week if you like.A. can’tB. mustn’tC. needn’tD. may not17. It’s still early, you _____.A. mustn’t hurryB. wouldn’t hurryC. may not hurryD. don’t have to hurry18. Please open the window, _____?A. can’t youB. aren’t youC. do youD. will you19. We _____ for her because she never came.A. mustn’t have waitedB. shouldn’t have waitedC. mustn’t waitD. needn’t wait20. — May I stop here? — No, you _____.A. mustn’tB. might notC. needn’tD. won’t21. It’s a fine day. Let’s go fishing, _____.A. won’t weB. will weC. don’t weD. shall we22. I didn’t see her in the meeting room this morning. She _____ at the meeting.A. mustn’t have spokenB. shouldn’t have spokenC. needn’t have spokenD. couldn’t have spoken23. — Please don’t make a noise. — _____. I’ll be as quiet as a mouse.A. Yes, I won’tB. No, I won’tC. No, I willD. Yes, I will24. The young man has made so much noise that he _____ not have been allowed to attend the concert.A. couldB. mustC. wouldD. should25. — Where is John? — He _____ in the library.A. should beB. must beC. can beD. must have been26. Since the road is wet this morning, _____ last night.A. it must rainB. it must be rainingC. it must have rainedD. it must have been rain27. — Will your brother stay home tonight?— I’m not quite sure. He _____ to the cinema tonight.A. must goB. can goC. may goD. may be going28. She’s already two hours late. What ______ to her?A. can have happenedB. may have happenedC. should have happenedD. must happen29. You must be a writer, _____?A. mustn’t youB. are youC. must youD. aren’t you30. I got up early that morning, but I _____ so because I had no work to do.A. mustn’t have doneB. didn’t need to doC. needn’t have doneD. can’t have done31. He _____ have come here yesterday, but he didn’t.A. couldB. shouldC. ought toD. all the above32. I missed the last bus, so I _____ go home on foot.A. mustB. have toC. mayD. had to33. He ought to win the first prize, _____ he?A. oughtn’tB. shouldn’tC. mustn’tD. both A and B34. Everyone _____ do his best for the modernizations of our country.A. canB. mayC. shouldD. might35. Let’s clean our classroom, _____?A. will youB. don’t weC. shall weD. do you36. Let us play basketball, ______?A. will youB. don’t weC. shall weD. do you37. He asked me for this book many times. Please tell him that he _____ have it tomorrow.A. mustB. mayC. shallD. both B and C38. “Your phone number again? I _____ quite catch it.” “It’s 9568442.”A. didn’tB. couldn’tC. don’tD. can’t39. Mother _____ us stories when we were children.A. was used to tellB. is used to tellingC. used to tellD. used to telling40. She would rather _____ more money on books _____ on clothes.A. cos t … notB. to spare … don’tC. pay … thanD. spend … than专项练习（三）1. — Has Li Lin started? He said he would join in the party.— He ______. He is a man of keeping his word.A. could have leftB. must have leftC. can’t comeD. won’t be c oming2. — May I park my car here?— No, you ______. No car is allowed to park here.A. may notB. needn’tC. mustn’tD. daren’t3. — Excuse me, could you tell me where the Yajia Supermarket is?—It’s two blocks straight ahead. You ______ miss it.A. mustn’tB. can’tC. needn’tD. shouldn’t4. — I saw Mr. Sun at Tongyu Station this morning.—You ______. He’s still on holiday in Hawaii.A. couldn’t haveB. mustn’t haveC. shouldn’tD. needn’t5. — How about paying a visit to Dr. Wang, our former Chinese teacher?— Good idea. I will e-mail him today so that he ______ know ______ to expect us.A. shall; whyB. could; whenC. would; whatD. will; how6. Everything has two sides. Beautiful songs, sometimes, ______ be just noise to others.A. mustB. mayC. shouldD. could7. Someone ______ my umbrella. I found it wet yesterday.A. must be usingB. must have usedC. must useD. must have been using8. — How dangerous it was!— Yes, but for the passer-by’s quick action, th e girl ______.A. was drownedB. could have been drownedC. had drownedD. should be drowned9. You ______ scold such a pupil who always keeps silent so seriously that you ______ hurt him.A. should; canB. may; willC. mustn’t; mayD. can’t; must10. — Why does Alice know so much about Angkor Wat?— She ______ have been there, or ...A. mustB. oughtn’t toC. mayD. can’t11. —You may laugh, but I’ve been thinking of becoming a vegetarian.— Oh, you ______ be crazy. You will be hungry all the time.A. mustB. mayC. willD. need12. —What’s the matter with you?—Oh, I’m not feeling well in the stomach. I ______ so much fried fish just now.A. shouldn’t eatB. mustn’t have eatenC. shouldn’t have eatenD. mus tn’t eat13. — ______ he have been chosen as captain of the football team?— Yes, he ______.A. Can; must haveB. Must; must haveC. Can; mustD. Must; must14. Mr. Zhang ______ in Shanghai tomorrow morning.A. can have arrivedB. will have arrivedC. may have arrivedD. must have arrived15. Miss Wang started at 8 o’clock, and she ______ be there now.A. shouldB. canC. can’tD. need16. — It must be Mr. Li who did it. — No, it ______ be Mr. Li.A. mustn’tB. wouldn’tC. can’tD. may17. You ______ finish reading the book as soon as possible.A. mayB. canC. needD. should18. — Need you go to work now? — Yes, I ______.A. mustB. needC. canD. dare19. Your trousers are dirty. ______ them for you?A. Shall I washB. Will I washC. Am I going to washD. Am I washing情态动词专项练习与解析一【练习解析】1．C 从原题中You can keep it till next week if you like这一信息句可知，“你不必现在还”。
高中英语知识点归纳情态动词和现在完成时的否定和疑问句总结
高中英语知识点归纳情态动词和现在完成时的否定和疑问句总结情态动词及现在完成时的否定和疑问句总结情态动词（Modal Verbs）和现在完成时（Present Perfect Tense）是高中英语中的重要知识点，它们在语法和语义上都有一定的特点和用法。
本文将对情态动词和现在完成时的否定和疑问句进行总结和归纳。
一、情态动词的基本用法情态动词是一类特殊的助动词，常用的情态动词包括can、could、may、might、shall、should、will、would、must等。
情态动词具有以下几个基本用法：1. 表示能力、可能性和允许性例如：- I can swim.（我会游泳。
）- It may rain tomorrow.（明天可能会下雨。
）- You can't smoke here.（这里不允许吸烟。
）2. 表示推测和猜测例如：- He must be tired.（他一定累了。
）- She might be at home.（她可能在家。
）- They couldn't have known about it.（他们不可能知道这件事。
）3. 表示义务和建议例如：- Students should wear uniforms to school.（学生们应该穿校服上学。
）- You must finish your homework before going out.（你必须在出去之前完成作业。
）二、现在完成时的构成和基本用法现在完成时表示过去发生的动作对现在造成的影响或结果。
它由助动词have/has加上过去分词构成，其中have用于第一人称和第二人称，has用于第三人称单数。
现在完成时的基本用法如下：1. 表示过去开始并延续到现在的动作或状态例如：- I have lived in this city for five years.（我在这个城市住了五年了。
）- They have been friends since childhood.（他们从小就是朋友。
高中英语知识点归纳情态动词与情态副词的区别与用法
高中英语知识点归纳情态动词与情态副词的区别与用法情态动词和情态副词是英语语法中的两个重要概念，尽管它们在形式上相似，但在用法和含义上有一些区别。
本文将详细介绍情态动词和情态副词的区别和用法。
一、情态动词的定义和用法情态动词是一类特殊的助动词，用于表示说话人的态度、情感或推测。
常见的情态动词有can、could、may、might、shall、should、will、would、must等。
1. 表示能力和才能：- Can：表示能力、许可或请求，用于肯定句和疑问句中。
- He can swim.（他会游泳。
）- Can I borrow your pen?（我能借用你的笔吗？）- Could：过去式，表示过去的能力或请求。
- I could run faster when I was young.（我小时候跑得更快。
）- Could you open the window, please?（请你开下窗户好吗？）2. 表示推测和建议：- May：表示可能性、允许性或请求。
- It may rain tomorrow.（明天可能会下雨。
）- May I use your phone?（我可以用一下你的手机吗？）- Might：表示较小的可能性或社交礼貌。
- He might be at home.（他可能在家。
）- Might I have a glass of water, please?（我可以请你倒杯水吗？）3. 表示义务和建议：- Shall：主要用于疑问句或表示请求或建议。
- Shall we go now?（我们现在走吗？）- You shall do your homework.（你必须完成作业。
）- Should：表示应该、建议或责任。
- You should apologize.（你应该道歉。
）- She should study harder.（她应该更加努力学习。
）4. 表示必须和命令：- Must：表示必须、必要或断定。
高中英语语法之情态动词
高中英语语法之情态动词一、概念情态动词是表示能力,义务,必须,猜测等说话人的语气或情态的动词。
二、相关知识点精讲1．can1)表能力can 表能力时意味着凭体力或脑力或技术等可以无甚阻力地去做某事。
I can climb this pole.我能爬这根杆子。
He is only four , but he can read.他只有4岁，但已认得字了。
Fir e can’t destroy gold.火烧不毁金子。
因为 can 不能和其他助动词连用，所以表示将来式时用will be able to。
You will be able to skate after you have practiced it two or three times.你练习两三次后就会溜冰了。
2)表可能性多用于否定与疑问结构中，但也可用在肯定句中。
Can the news be true?这消息可能是真的吗？It can’t be true.它不可能是真的。
What can he possibly mean?他可能是什么意思？can 用在肯定句中表示理论上的可能性（一时的可能）。
Attending the ball can be very exciting.The road can be blocked.这条路可能会不通的。
may 在肯定句中表示现实的可能性。
The road may be blocked.这条路可能不通了。
3)表示允许（和 may 意思相近）常见于口语。
Can (May) I come in ?我能进来吗？Can I smoke here ?我可以在这里抽烟吗？2.could 的用法1)表过去的可能和许可，（多用于间接引语中）At that time we thought the story could not be true.那时我们认为所说的事不可能是真的。
Father said I could swim in the river.爸爸说我可以在河里游泳。
市鸽悉学校高二英语情态动词专题讲解
盘船州斜盒市鸽悉学校高二英语情态动词专题讲解情态动词的语法特征1. 情态动词不能表示正在发生或已经发生的事情，只表示期待或估计某事的发生。
2. 情态动词除ought 和have 外，后面只能接不带to 的不定式。
3. 情态动词没有人称，数的变化，即情态动词第三人称单数不加-s。
一、情态动词的非推测性用法1. can表示能力时,注意它与be able to 的区别。
① can的主语可以是人或物,而be able to 通常是有生命的东西。
The machine can work out two million problems per second.② can只有现在和过去两种时态形式,即:can和could;而be able to有谓语动词的各种时态变化,还有非谓语动词形式。
I've always wanted to be able to speak English.③在过去时态中,强调"有能力"时,用could,强调"条件或情况允许" (有时还强调通过努力创造条件干成某事)时,用was / were able to。
比较:I couldn't buy a ticket. (暗示我当时没有钱,所以没能买票。
)I wasn't able to buy a ticket. (则暗示票已经卖完了,所以我没能买到。
)2．can, could在表示允许(permission)时，其含义是be allowed to/be permitted to，相当于汉语“可，可以”等。
在疑问句中表请求许可，具体分三种情况：1)请求允许做某事: Could I ask you smoking, if you are not so busy?2)请求别人做某事: Can you hold the ladder for a minute, please?此含义还可以用诸如Will you …? / Would you … ?来表示。
高考英语情态动词用法及解题技巧
高考英语情态动词用法及解题技巧高考英语情态动词用法及解题技巧导语：情态动词是中学英语语法的重点，也是高考的热点。
只用作情态动词的有：can/could，may/might，must，ought to，be able to;既可作情态动词又可作实义动词的有：need，dare;既可作情态动词又为助动词的有：shall/should/w1ll/would。
以下是小编为大家精心整理的高考英语情态动词用法及解题技巧，欢迎大家阅读参考!1情态动词need的用法1. need作情态动词，一般用于疑问句和否定句中，表示“需要”、“必要”。
当其用于现在时和将来时时，在宾语从句中可当过去时用。
肯定回答用must(或have to, ought to, should) 来表达。
否定式为need not / needn't表示“不必，不需要”。
如：(1) You needn't show your passport at the entrance unless the guard asks you for it.(2) —Shall I tell Jack about it?—No, you needn't. I've told him already.2. need作实义动词，意为“需要”、“要求”。
如：(1) You don't need to leave so early.(2) He needs to try one more experiment.2情态动词dare的用法1. 情态动词，表示“敢”，后接动词原形，用于否定句、疑问句和条件状语从句中。
如：(1) We dare not refuse their request.(2) Dare you walk through the forest at night?2. 当实义动词用时，可用于各种句型中。
dare作实义动词用在否定句和疑问句中时，其后接不定式有时可省去“to”。
高中英语2025届高考语法复习情态动词与虚拟语气知识讲解
高考英语语法复习情态动词与虚拟语气知识讲解一、情态动词（1）表示能力时，can只用于一般现在时，could仅用于一般过去时；而be able to则有更多的时态，如将来时、完成时等。
I haven’t been able to read that report yet.He will be able to skate as well as you.（2）Was/were able to表示能力时，侧重经过努力而成功做到某事；而could仅表示具备能力，不说明是否实施了能力。
He studied hard and was able to pass the exam.（3）用在其他动词，如might,may,would,want,hope等之后表示能力只能用be able to。
He might be able to fix your car.（1）must还可以表示质问或感情色彩，意为“偏要，偏偏”。
Why must it snow on Saturday?（2）should还可以表示惊奇、愤怒、失望等特殊情感，尤其用在以why,who,how等开头的疑问句中或某些感叹句中。
why should you be so late today?（1）must作“必须”讲的一般疑问句，其肯定回答用must，否定回答用needn’t或don’t have to。
-Must I pay now?-Yes, you must./No, you needn’t.（2）need还可以作实义动词，有人称和数的变化，后跟带to的不定式作宾语。
She needed to go out for a walk.（1）两者在表示过去的习惯动作或行为时常可通用。
When we were children, we would/used to go skating every winter.（2）Used to与would都不能与表示具体频率、次数的词及特定的时间状语或具体的一段时间连用。
高中英语情态动词详细讲解及例句
一、情态动词无人称和数的变化，不能单独做谓语，只能和行为动词或状态动词构成谓语二、情态动词分为：情态助动词：can(could)、may(might)、must、have to (had to )、ought to 、shall(should)、will(would) 12个半情态助动词：dare、need、used to、had better、would better(5个)三、情态助动词1.can and could1)ability：be able to do /manage to do/succeed in doing sth.eg.The army can defeat their enemy.eg.The army is able to defeat their enemy.eg.The army succeed in defeating their enemy.2)permission:eg.Can I smoke here?eg.You can’t smoke here.3)possibility:用在否定句、疑问句、感叹句中-eg.This can’t be done by him.当被用在肯定句中时，表达的是理论上的可能性，不涉及是否真的会发生eg.even expert drives can make mistakes.要表达现在或者将来的可能性，用may /might或could.eg.I may leave for Beijing next month.但在特殊疑问句中，或与副词hardly、only等连用的陈述句中表达可能性只用can/couldEg.where can the noise be coming from?eg.It can hardly be the postman,he comes only in the morning.4)有时会：the road can be blocked.5)could 表示轻微的怀疑或委婉的看法I’m sorry I couldn’t lend you the book now.His story could be true,but I hardly think it is.6)could 表示委婉的请求，主要用于疑问句，不用于肯定句Could you lend me some money?Yes,I can /No,I am afraid not.7)could 的常用结构：could+动词+比较级“非常，再.....不过了”It couldn’t be better.Couldn’t +过去分词+比较级“非常，再.....不过了”They couldn’t have tried harder to make me eel welcome.Can’t..too..=can never too“无论怎样...也不为过,越...越好”I can’t thank you too much.I owe my progress to you.Can’t (help/choose) but do/can but +动词原形“不得不，只好”We can but agree with him.Can’t help doing 忍不住，不得不I can’t help laughingCan’t be (it) 控制不住，没有办法It can’t be helpedCan’t....without 没有...就不能One can’t succeed without perseverance.2.may and might1)permission:May I use your pen?Yes,you may./No,you may not.2)Possibility:用于推测，表示不确定,不用于疑问句中She may know Tom’s address.出现I’m afraid.I’m not sure等表示不确定时，常用may/might.I’m afraid he might not come to attend the meeting today.从语气上判断，may表示的可能性比might 大，might更多的表示怀疑He may be very busy now.He might be very busy now.3)用于让步状语从句中However hard you may study,you cannot master English in a month.4)用于祈使句，表示祝愿May you succeed!5)might 常用于表示轻微的责备和委婉的请求You might post the letter for me if you are going near a post box.You might have let me know before!6)习惯用法：may as well do”理所当然，有足够的理由”She may be proud of her sonMay /might (just) as well do=had better do(最好)You might as well stay at home tonight.May/might as well+do A+as+do+B”与其做B不如做A”You might as well throw the money away as lend it to him.One may as well not know a thing at all as know it but imperfectly3.must and have to1)表示义务，一定要，必须You must arrive in good time.The meeting is very important.2)表示肯定性或难以避免，必然会，肯定会All men must die.3)must 表示有把握的推测，一定是，准时Must do/must be doing/must have doneThe tall fellow must be a basketball player.Let’s have something.You must be starving.He must have received mu letter which has mailed last week.4)must 表示非要，偏要，常以第二人称为主语，意指不耐或令人不愉快的事情，用于其他人称，表示主语固执，意为偏偏Why must you buy that car?Jane was never a pleasant young girl.After you gave her your advice,she must goand do the opposite.5）must 的三种否定形式表示不可能must be --can’t be must have done--can’t have doneYou must have met him before.You can’t have met him before.表示不必must do--need not to/don’t have toWe must get up at six tomorrow morning.We don’t have to get up at six tomorrow morning.表示决不能，严禁must--mustn’tYou mustn’t park your car here.6)回答以must提问的句子Must we clean all the rooms?Yes ,you must/No ,you don’t have to/No ,you needn’t7)must 可做名词，表示必须有的东西，必须做的事Warm clothes are a must in the mountains.8)must和have to 表示必须时，有一下差别Must 表示的是说话人主观的看法，而have to则往往强调客观需要The play is not interesting ,I really must go now.I have to work when I was your age.Must 一般只表现在，have to 则有更多的时态。
高中英语语法情态动词
1 比较can 和be able to1）can/could 表示能力；可能（过去时用could）, 只用于现在式和过去式（could）。
be able to可以用于各种时态。
例如：They will be able to tell you the news soon. 他很快就能告诉你消息了。
表示成功地做了某事时，用was/were able to，不能用could。
例如：He was able to flee Europe before the war broke out. = He managed to flee Europe before the war broke out.2）提出委婉的请求，（注意在回答中不可用could）。
例如：--- Could I have the television on? 我能看电视吗？--- Yes, you can. / No, you can\‘t. 可以/不可以。
3）在否定句、疑问句中表示推测或怀疑。
例如：He couldn\’t be a bad man. 他不大可能是坏人。
Could he help us ?The girl couldn’t have stolen your electronic dictionary .•4）有时会，he can be difficult to get along with , even though he is good 5）否定推测用can\'t。
例如：If Tom didn\'t leave here until five o\'clock, he can\'t be home yet.如果汤姆五点才离开这儿，他此时一定还未到家。
2 比较may和might1）表示允许或请求；表示没有把握的推测；may 放在句首，表示祝愿。
例如：May God bless you! 愿上帝保佑你！He might be at home. 他可能在家。
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。安全思想变，腰里的钱包也鼓了，就想着去城市安生，住着高楼大厦，交通便利，生活配套设施齐全。家乡，那片贫瘠却一成不变的山水成为即将被遗弃的地方。村落里剩下的 人越来越少，村庄里住户家数也越来越少，村庄的天空和大地似乎越来越空旷，一年又一年，一家又一家不是举迁到外地就是全部搬到县城。那片有着好山好水好风光的田原里住着走不出去的渐渐变老 的人们，越来越清静，越来越孤单，越来越珍惜大家在一方水土生活的时光。曾经人多时，家家户户不时有人因田间的水分争吵、大打出手，为了田间地头那几亩庄稼为了一日三餐的口粮以前的家乡人 折煞了腰，但是现在那些田地，任凭荒芜也没有人争抢。家乡还是用着世界上最落后的农耕方式。因为是丘陵地带，因为是亚热带地区，因为风调雨顺太难得，种田的人依然只能靠天吃饭。家乡的人们， 穷够了，苦够了，所以忍受能力强，在外面能吃苦能忍让能拼博。新生代的年轻人思想变化更快，世界有多大，要出去看过了才知道，心境有多宽，要多年历练后才知晓。不得不看到家乡人的思想在发 生着翻天覆地的变化，精神面貌随着物质的改变而顺应着改变。一直以来，红安靠着打工经济来维持并带动着有限的消费。因为生在老区山区落后的地方，红安的男孩女孩小时候的生活条件有限，为了 供养小孩的上学，上辈人要辛苦更多倍，红安的小辈们心中的压力和思想包袱更重。 有一天，当家乡已成故乡，成了一个曾经回去很少，或者叫老家的地方，我们在一边享受着现代物质生活的同时，也在怀念着曾经纯真并且远逝的时代。家乡已成故乡，因为那里只盛产一些记忆，却无 法安生。那里没有高房子，没有小车子，没有新时代的气息。有的是永远如当年般清澈的池水，如当年般青秀的山脉，如当年般干净的空气，如当年般明亮的星空。