高中情态动词练习题及答案

高中情态动词练习题及答案 精品文档 高中情态动词练习题及答案 1. It is usually warm in my hometown in March, but it ____ be rather cold sometimes. A. mustB. can C. should D. would 2. You ______ be hungry already ---- you had lunch only two hours ago! A. wouldn’t B. can’t C. mustn’tD. needn’t 3. ---- What do you think we can do for our aged parents? ---- You ____ do anything except to be with them and be yourself. A. don’t have toB. oughtn’t to C. mustn’t D. can’t 4. John promised his doctor he ______ not smoke. And he has never smoked ever since. A. mightB. should C. could D. would 5. What a pity! Considering his ability and experience, he ______ better. A. need have done B. must have doneC. can have doneD. might have done 6. Liza ______ well not want to go on the trip ---- she hates traveling. 1 / 39 精品文档 A. will B. canC. must D. may 7. She ______ have left school, for her bike is still here. A. can’tB. wouldn’t C. shouldn’t D. needn’ t 8. According to the air traffic rules, you _____ switch off your mobile phone before boarding. A. may B. can C. wouldD. should 9. ---- I can’t find my purse anywhere. ---- You ______ have lost it while shopping. A. may B. can C. shouldD. would 10. ---- I’m sorry. I _______ at you the other day. ---- Forget it. I was a bit out of control myself. A. shouldn’t shout B. shouldn’t have shoutedC. mustn’t shoutD. mustn’t have shouted 11. ---- What sort of house do you want to have? Something big? ---- Well, it _______ be big ---- that’s not important. A. mustn’t B. needn’t C. can’t D. won’t 12. ---- What does the sign over there read? 2 / 39 精品文档 ---- “No person _______ smoke or carry a lighted cigarette, cigar or pipe in this area.” A. willB. may C. shall D. must 13. Some aspects of a pilot’s job ______ be bring; and pilots often _______ work at inconvenient. A. can; have toB. may; canC. have to; may D. ought to; must 14. My MPplayer isn’t in my bag. Where _______ I have put it? A. can B. mustC. shouldD. would 15. The weather turned out to be fine yesterday, I _____ the trouble to carry my umbrella with me. A. should have taken B. could have taken C. needn’t have takenD. mustn’t have taken ANSWERS:1 —BBADD6—10 DADAB11—1BCAAC 16. In crowded places like airports and railway stations, you ______ take care of your luggage. A. can B. may C. mustD. will 17. ---- She looks very happy. She ______ have passed the exam. ---- I guess so. It’s not difficult after all. A. should B. could C. must D. might 3 / 39 精品文档 18. I told your friend how to get to the hotel, but perhaps I _______ have driven her there. A. could B. must C. mightD. should 19. ---- Mr. Gordon asked me to remind you of the meeting this afternoon. Don’t forget it! ----OK, I _______. A. won’tB. don’t C. can’t D. needn’t 20. ---- How is your tour around the North Lake? Is it beautiful? ---- It _______ be, but it is now heavily polluted. A. willB. wouldC. shouldD. must 21. The biggest problem for most plants, which ______ just get up and run away when threatened, is that animals like to eat them. A. shan’tB. can’tC. needn’tD. mustn’t 22. ---- Where is my dictionary? I remember I put it here yesterday. ---- You _______ it in the wrong place. A. must put B. should have putC. might put D. might have put 23. ---- What’s the name? ---- Khulaifi. ______ I spell that for you? 4 / 39 精品文档 A. ShallB. Would C. CanD. Might 24. ---- Who is the girl standing over there ? ---- Well, if you ______ know, her name is Mabel. A. mayB. canC. mustD. shall 25. I was really anxious about you. You _______ home without a word. A. mustn’t have leftB. shouldn’t have left C. couldn’t have leftD. needn’t have left 26. My sister met him at the Grand Theatre yesterday afternoon, so he ______ have attended your lecture. A. couldn’t B. needn’tC. mustn’tD. shouldn’ t 27. ---- Are you coming to Jeff’s party? ---- I’m not sur. I _______ go to the concert instead. A. must B. would C. should D. might 28. Johnny, you ________ play with the knife. You ________ hurt yourself. A. won’t; can’t B. mustn’t; may C. shouldn’ t; must D. can’t; shouldn’t 29. You _______ pay too much attention to your 5 / 39 精品文档 reading skill, as it is so important. A. shouldn’t B. cannotC. mustn’t D. needn’ t 30. ---- Is John coming by train? ---- He should, but he ______ not. He likes driving his car. A. must B. may C. can D. need ANSWERS: 16—20 CCDAC21—2BDACB—30 ADBBB 31. ---- Will you stay for lunch? ---- Sorry, I _______. My brother is coming to see me. A. mustn’t B. can’tC. needn’t D. won’t 32. Sir, you _______ be sitting in this waiting room. It is for women and children only. A. oughtn’t to B. can’t C. won’t D. needn’ t 33. It is raining very hard. We _________ stay here until the rain stops. A. dare B. must C. have toD. are able to 34. It’s a fine day. Let’s go fishing, ________ ? A. won’t we B. will youC. don’t youD. shall we 35. When he was there, he ______ go to that coffee 6 / 39 精品文档 shop at the corner after work every day. A. wouldB. should C. might D. had better 36. My brother _____ come to your party tonight because he _____ prepare for tomorrow’s exam. A. can’t; shouldB. mustn’t; canC. can’t; must D. mustn’t; had to 37. English is a language that many people around the world _____ not speak perfectly but _____ at least understand. A. would; might B. will; mustC. might; could D. can; may 38. ---- ________ I book a table for dinner a few days ahead of time? ---- Yes, you ________. The restaurant is always full, especially during the holidays. A. Must; willB. Must; can C. Shall; shallD. Shall; must 39. ---- It _______ be Mary in the office. ---- I’m sure it _______ be her. I saw her off at the bus station just ten minutes ago. A. must; shouldn’t B. should; can’t C. must; can’ t D. can; mustn’t 7 / 39 精品文档 40. Their answers are exactly the same ---- one of them ______ from the other. A. must copy B. must have copied C. should copy D. should have copied 41. ---- _________ I tell John about it? ---- No, you needn’t. I have told him already. A. ShallB. Will C. Can D. May 42. ________ you please help me with my English? A. Would B. DoC. Shall D. Can 43. ---- Must I start at once? ---- No, you ___________. A. needn’t B. mustn’tC. can’t D. won’t 44. ---- Need I hand in my exercise book at once? ---- Yes, you __________ A. must B. needC. can D. will 45. ---- Could I borrow your dictionary? ---- Yes, of course you _______. A. mightB. willC. can D. should ANSWERS:1—3BACDA6—40 CCDCB41—4AAAAC 46. ---- Listen! Someone is knocking at the door. I ________ be Father. ---- It _______ be him; he is supposed to be back 8 / 39 精品文档 home tomorrow. A. may; may B. must; can’tC. can; can’t D. could; must 47. Twenty minutes have passed; the bus _______ come at any moment. A. shallB. should C. can D. must 48. She ________ have flown to Beijing last night, for I stayed with her all the time. A. mustn’t B. may notC. shouldn’tD. can’t 49. You ______ the work better, but you didn’t try your best. A. must have done B. will have doneC. could have done D. can have done 50. The light is on. We _______ have forgotten to turn it off before we went out. A. shouldB. must C. could D. might 51(May I stop my car here? No, you_,,,. A. can't B. mustn't C. needn't D. don't have to Must we clean the house now?No, you _______. A. needn'tB. may not C. mustn't D. can't 53. John ________ his father about his failure in the exam. 9 / 39 精品文档 A. dares not tell B. dares not telling C. dare not tellD. dares not to tell 54. You________ return the book now. You can keep it next week if you like. A. can't B. mustn't C. needn't D. may not 55. Johnny, you _______ play with the knife, you hurt yourself. A. won't; can'tB. mustn't; mayC. shouldn't, must D. can't; shouldn't 56. The fire spread through the hotel very quickly but everyone ________ get out. A. had to B. would C. could D. was able to 57. ---- Would you go out for a walk with me? ---- No, I______ . My girl friend is coming. A. wouldn't B. shall not C. won'tD. shouldn't 58. Man _______ die without water. A. will B. can C. needD. shall 59. If he started at 0'clock, he _______ be there by now. A. needB. shallC. ought to D. must 60. I mailed the letter two weeks ago. She _____ it. 10 / 39 精品文档 A. must receiveB. can't receive C. might receive D. must have received ANSWERS:6—50 BBDCB51----5BACCB56----60 DCADD 61.The professor gave orders that the experiment _______ before:30p.m. A. be finishedB. will finish C. must be finished D. would be finished 62. There was plenty of time. You _____. A. mustn't hurry B. mustn't have hurried C. needn't hurry D. needn't have hurried 63. Tom was a diligent boy. He ________ go to school though it was raining hard. A .was able toB. could C. couldn't D. wasn't able to 64. ______I go back before lunch? No, I don't think you________. A. Need; must B. Do; need to C. Must; have to D. May; ought to 65. The teacher __________ do all the exercises, but a pupil _______. A. needn't; must B. may not; mustC. needn't; needn'tD. can't; must 11 / 39 精品文档 66. ---- Would you open the window please ? ---- Yes, I______. A. will B. would C. do D. can 67. A lion _______ only attacks a human being when it is hungry. A. should B. can C. will D. shall 68. ---- Must I finish this novel this morning ? ---- No, you_____. A. mustn't B. might not C. don't have to D. can't 69. The taxi ____ only hold six passengers. It is full. You _______ take the next one. A. may...may B. can...may C. may...can D. must...can 70. I _______ a little earlier, but I met a friend of mine on the way. A. may come B. may have come C. could have comeD. must have come 71. I wish to go home now, _______ I? A. may B. can'tC. mustD. do 72. He must have finished his homework, __________ he? A. mustn't B. didn't C. needn't D. hasn't 12 / 39 精品文档 73. This pen looks like mine, yet it isn't. Whose _________ it be? A. mustB. can C. may D. might 74. He didn't do well in the exam. He ________ hard at his lessons. A. must have workedB. ought to have worked C. would have worked D. has worked 75. I wonder how he __________ that to the teacher. A. dare to say B. dare saying C. not dare sayD. dared say ANSWERS:1----6ADACA 6----70 ACCBC1----7ADBBD 76. Mr. Baker, a number of students want to see you. _____ they wait here or outside? A. Should B. Will C. Shall D. Are 77. You __________ the trees. Look, it is raining now. A. mustn't have wateredB. needn't have watered C. could have watered D. might have watered 78. I ________ give you an answer tomorrow. I promise! A. must B. will C. may D. shall 79. As a soldier, you ________ do as the head tells 13 / 39 精品文档 you. A. willB. shall C. may D. ought to 80. The streets are all dry. It _____ during the night. A. can't have rained B. must have rained C. couldn't rainD. shouldn't have rained 81.Mary was not in her bedroom yesterday afternoon. She ____ in her classroom. A. should have been B. must have been C. must be D. should be 82. Eve was late for class again. She ____earlier. A. should get up B. must get up C. need to get up D. should have got up 83. Walking alone in the deserted village, John was scared. He thought he ______ Tom to go with him. A. might have asked B. should asked C. must have askedD. should have asked 84. When I got to the cinema, the film had already started; I____ there earlier. A. ought to get B. ought to have got C. must have got D. must get 14 / 39 精品文档 85. She can speak quite fluent English. She____. 高中英语语法之情态动词 情态动词的定义 :情态动词表示说话人对某一动作或 状态的态度。 情态动词的特点 :1)有一定词义;2)不受主语人称 和数的变化影响;3)与主要动词的原形一起构成谓语。 情态动词无人称和数的变化, 情态动词后面跟的动词 需用原形,否定式构成是在情态动词后面加 "not"。 个别情 态动词有现在式和过去式两种形式, 过去式用来表达更加 客气, 委婉的语气, 时态性不强, 可用于过去，现在或将 来。情态动词属非及物动词，故没有被动语态。 He could be here soon. 他很快就来。 We can't carry the heavy box. 我们搬不动那箱子。 I'm sorry I can't help you. 对不 起，我帮不上你。 基本助动词与情态助动词最主要的区别之一是，基本 助动词本身没有词义，而情态助动词则有自己的词义，能表 示说话人对有关动作或状态的看法，或表示主观设想: What have you been doing since? I am afraid I must be going. You may have read some account of the matter. 除此之外，情态助动词还有如下词法和句法特征: 1) 除ought和used以外，其他情态动词后面只能接 15 / 39 精品文档 不带to的不定式。如果我们把ought to和used to看做是 固定词组的话，那么，所有情态动词无一例外地只能接不带 to的不定式: We used to grow beautiful roses. I asked if he would come and repair my television set. 2) 情态助动词在限定动词词组总是位居第一: They need not have been punished so severely. 3) 情态助动词用于第三人称单数现在时的时候，没 有词形变化，即其词尾无-s形式: She dare not say what she thinks. 4) 情态动词没有非限定形式，即没有不定式和分词 形式，也没有相应的动名词: Still, she needn't have run away. 5) 情态助动词的“时”的形式并不是时间区别的主 要标志。在不少场合，情态助动词的现在时和过去时形式都 可以表示现在、过去或将来时间: Would you mind very much if I ask you to do something? She told him he ought not to have done it. 6) 情态助动词之间是相互排斥的，即在一个限定动 词词组中只能出现一个情态助动词，但有时却可以与have 和be基本助动词连用: You should have washed the wound. Well, you shouldn't be reading a novel. 16 / 39 精品文档 情态动词有四类:?只做情态动词: must,can,may,ought to ?可做情态动词又可做实义动词:need,dare?可做情态动词又可做助动词:shall,will ?具有情态动词特征:have to,used to?情态动词表猜测 情态动词的基本用法 1. can 1)表示能力，could主要指过去时间。 Two eyes can see more than one. 两只眼比一只眼看得清。 Could the girl read before she went to school? 这女孩上学前能识字吗, 2)表示可能。 The temperature can fall to –60?, that is0? below freezing. 气温可降至—60?，也就是零下60?。 He can′t have enough money for a new car. 他不可能有足够的钱买新车。 You mustn′t smoke while you′re walking around in the wood. You could start a fire. 在林子里走时勿吸烟，那样可能会引起火灾。 3)表示允许。 Can I have a look at your new pen? 我可以看一看 17 / 39 精品文档 你的新钢笔吗, He asked whether he could take the book out of the reading—room. 他问他可不可以把 书 关于书的成语关于读书的排比句社区图书漂流公约怎么写关于读书的小报汉书pdf 带出阅览室。 4)表惊异、怀疑、不相信等态度。主要用于否定句、疑问句或感叹句中。 Where can they have gone to? 他们会去哪儿了呢, He can′t be over sixty. 他不可能超过六十岁。 How can you be so careless? 你怎么这么粗心, 5)比较委婉客气地提出问题或陈述看法。 Can you lend me a hand? 帮我一把好吗, I′m afraid we couldn′t give you an answer today. 恐怕我们今天不能给你答复。 2. may 1)表允许，might可以指过去时间，也可指现在时间，语气更委婉。 You may take whatever you like. 你喜欢什么就拿什么。 He told me that I might smoke in the room. 他告诉我可以在房间里抽烟。 May I ask for a photo of your baby? 我可以要一张你宝宝的照片吗, 18 / 39 精品文档 在回答以may引起的问句时，多避免用这个词，而用其它方式，如Yes, please. / Certainly. / Please don′t ./ You′d better not. / No, you mustn′t.等，以免显得太严峻或不客气。 2)表可能。可以指过去时间，也可以指现在时间，但语气更加不肯定。 He may be at home. 他可能在家。 She may not know about it. 她可能不知道这件事。 He was afraid they might not agree with him. 他担心他们可能不同意他的意见。 They might be having a meeting, but I′m not sure. 他们有可能在开会，不过我不肯定。 3. must 1)表示义务。意为“必须”。 We must do everything step by step. 我们一切都必须循序渐进地做。 You mustn′t talk to her like that. 你不可能那样对她说话。 --Must we hand in our exercise—books now? 我们现在就要交练习本吗, --No, you needn′t. / No, you don′t have to. 不必。 19 / 39 精品文档 2)表示揣测。意为“想必、准是、一定”等，只用于肯定句。 He must be ill. He looks so pale. 他准是病了。他的脸色苍白。 She′s wearing a diamond necklace. She must have a lot of money. 她戴着钻石项链，一定很有钱。 4. shall 1)表征询意见，用于第一、第三人称疑问句。 Shall I get you some tea? 我给你点茶好吗, Shall the boy wait outside? 让那男孩在外面等吗, What shall we do this evening? 我们今晚做什么, 2)表说话人的意愿，有“命令、允诺、警告、决心”等意思，用于第二、第三人称陈述句。You shall do as I say. 按我说的做。 You shall have my answer tomorrow. 你明天可以得到我的答复。 He shall be sorry for it one day, I tell you. 有一天他会后悔的，我告诉你。 Nothing shall stop us from carrying out the plan. 什么也不能阻止我们执行这项 计划 项目进度计划表范例计划下载计划下载计划下载课程教学计划下载 5. will 20 / 39 精品文档 1)表意愿，用于各种人称陈述句。 I will do anything for you. 我愿为你做任何事。 None is so blind as those who won′t see. 不愿看的人眼最瞎。 If you will read the book, I′ll lend it to you. 如果你愿意读这本书，我会把它借给你。 2)表请求，用于疑问句。 Will you close the window? It′s a bit cold. 请你把窗户关上好吗,有点冷。 Won′t you drink some more coffee? 再来一点咖啡好吗, 3)表示某种倾向或习惯性动作。 Fish will die out of water. 鱼离开水就不能活。 The door won′t open. 这门打不开。 The boy will sit there hour after hour looking at the traffic go by. 那男孩常常坐在那里好几个钟点，看着车辆行人通过。 6. should 1)表义务。意为“应该”，用于各种人称。 You should be polite to your teachers. 你对老师应该有礼貌。 You shouldn′t waste any time. 你不应该浪费时间。 21 / 39 精品文档 2)表推测，意为“想必一定、照说应该、估计”等。 The film should be very good as it is starring first—class actors. 这部新电影是一流演员主演的，估计拍得很好。 They should be home by now. 照说他们现在应当已经到家了。 7.would 1)表意愿。 They would not let him in because he was poorly dressed. 他们不让他进去因为他衣着旧。 I said I would do anything for you. 我说过我愿意为你做任何事。 2)表委婉地提出请求、建议或看法。 Would you like another glass of beer? 再来杯啤酒好吗, Would you mind cleaning the window? 请把窗户擦一下好吗, They wouldn′t have anything against it. 他们不会有什么反对意见。 3)表过去反复发生的动作或过去的一种倾向。 Every time she was in trouble, she would go to him for help. 她每遇到麻烦都会向她求助。他告诉我盒子打不开了。 22 / 39 精品文档 8. ought to 1)表义务，意为“应该”，口气比should稍重。 You are his father. You ought to take care of him. 你是他父亲，应当管他。 You oughtn′t to smoke so much. 你不应该抽这么 多烟。 2)表推测，暗含很大的可能，语气较弱。 Han Mei ought to know his telephone number. 韩 梅该知道他的电话号码。 There′s a fine sunset; it ought to be a fine day tomorrow. 今天有晚霞，明天应该是个好天。 9. used to 表示过去的习惯动作或状态，现在不复发生或存在。 疑问式和否定式有两种。 He used to live in the countryside, but now he lives in the city.他过去住在乡下，现在住在城里。There used to be a building at the street corner, but it has been pulled down. 街道拐角处过去有座楼房，现在拆了。 I usedn′t to smoke. 我过去不抽烟。 Used you to go to school on foot? 你过去常步行 去学校吗, 23 / 39 精品文档 其他用法 首先它是动词，而且不同于行为动词，行为动词表示的是可以通过行为来表达的动作，而情态动词只是表达的一种想法。 用法是:情态动词+行为动词原形 例句:I can read this sentence in English. 我能用英语读这句话。 情态动词是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语, 只能和其他动词原形构成谓语。 We can be there on time tomorrow.我们明天能按时去那儿。 May I have your name? 我能知道你的名字吗, Shall we begin now?我们现在就开始吗, You must obey the school rules.你必须遵守校规。 情态动词数量不多,但用途广泛,主要有下列: can , may , must, need, ought to, dare , shall , will ,have ,had better. 情态动词还有一个很重要的用法，即情态动词表推测—— 情态动词表推测的用法小结 情态动词表推测的三种句式 24 / 39 精品文档 1.在肯定句中一般用must ，may，might / could。 He must/may/might know the answer to this question? 他一定/可能/也许知道这个问题的答案。 It is cold in the room. They must have turned off the heating. 屋里很冷，他们肯定把暖气关了。 2.否定句中用can’t / couldn’t, may not/might not。 It can’t/couldn’t be the headmaster. He has gone to America. 这不可能是校长，他去美国了。 He may not/might not know the scientist. 他也许 不认识那位科学家。 3.疑问句中用can/could 。 Could he have finished the task? 他可能把任务完 成了吗, Can he be at home now? 他现在能在家吗, 注:以上三种句式中情态动词的语气按程度都是依次 递减的。Might, could并非may, can的过去式，而表示语 气较为委婉或可能性较小。 情态动词表推测的三种时态 1.对将来情况的推测，用“情态动词 + 动词原形”。 She must / may / might / could arrive before.5:00 25 / 39 精品文档 前她一定/可能/也许到。 She must/may/might/could walk miles and miles among the hills without meeting anyone. 她一定/可能 /也许会在山里一连走好几英里而遇不到一个人。 2.对现在或一般情况的推测，用“情态动词 + be”，“情 态动词 +be doing”或“情态动词 + 动词原形”。 He must / may / might / could be listening to the radio now. 他一定/可能/也许正在听收音机。 He can’t / may not be at home at this time. 这个时候他不可能/可能不在家。 Mr. Bush is on time for everything .How can he be late for the opening ceremony ? 布什先生一向准时，这次开幕式他怎么可能迟到呢, 3.对过去情况的推测，用“情态动词 + have +过去分 词”。 It must / may / might / could have rained last night .The ground is wet. 地湿了，昨晚肯定/可能/也许下雨了。 The door was locked. He can not / may not have been at home . 门锁着，他不可能/可能不在家。 26 / 39 精品文档 Can / Could he have gotten the book, 难道他找到书了吗, 注:情态动词 should /ought to表推测时，意为“想 必会，理应„„”但与“have +过去分词”连用时，则又可 构成虚拟语气意为“本应该做某事却没做”。例如: It’s seven o’clock. Jack should/ought to be here at any moment. 现在七点钟了，杰克理应随时到达。 She should / ought to have attended your birthday party, but she had to look after her mother in hospital. 她本该出席你的生日晚会的，可是她得在医院照顾她妈妈。 Tom should not /ought not to have told me your secret, but he meant no harm. 汤姆本不该告诉我你的 秘密，可是他并无恶意。 功能 助动词主要有两类:基本助动词和情态助动词。基本 助动词有三个:do, have和be;情态助动词基本的有十四 个:may, might; can, could; will, would; shall, should; must, need, dare, used to, ought to.had better 上述 两类助动词的共同特征是，在协助主动词构成限定动词词组 时，具有作用词的功能: 1) 构成否定式: 27 / 39 精品文档 He didn't go and neither did she. The meeting might not start until o'clock. 2) 构成疑问式或附加疑问式: Must you leave right now? You have been learning French for years, haven't you? 3) 构成修辞倒装: Nowhere can he obtain any information about his sister. Hardly had he arrived when she started complaining. 4) 代替限定动词词组: A: Who can solve this crossword puzzle? B: Tom can. A: Shall I write to him?B: Yes, do. 重点疑难 need和dare的用法 need和dare既可用作情态动词，也可用作实义动词。 用作情态动词时，主要用于否定句和疑问句。用作实义动词 时，可用于各种句式。 1.用作情态动词 --Need I come? --Yes, you must. --我需要来吗, -- 需要。 You needn′t telephone him now. 你现在不必打电 28 / 39 精品文档 话给他。 I don′t think you need worry. 我想你不必发愁。 She dare not go out alone at night. 她晚上不敢一个人出去。 How dare you say I′m unfair? 你竟敢说我不公平, Not one of them dared mention this. 他们谁也不敢提这件事。 2.用作实义动词 You don′t need to do it yourself. 你不必亲自做这件事。 We need to tell them the news. 我们需要把这消息告诉他们。 情态动词记忆口诀: 情态动词两要点;动词原形跟后面,说话语气较委婉,can表"能力"may"许可",must"责任"或"义务",否定回答"needn't"换;should"应该",would"愿",have to "被迫"表客观. 注释 圣经注释小学小古文100篇及注释小古文100篇及注释简短小古文100篇及注释译文小古文100篇及注释 :对must构成的一般疑问句作否定回答只能用needn't. 情态动词有can , may , must, have to, shall , dare , need , ought to等。 情态动词无人称和数的变化;不能单独使用，必须与其后的动词原形构成谓语 29 / 39 精品文档 一、 can, could 1) 表示能力。 Can you lift this heavy box? Mary can speak three languages. Can you skate? 此时可用be able to代替。Can只有一般现在时和一 般过去式;而be able to则有更多的时态。 I’ll not be able to come this afternoon. 当表示―经过努力才得以做成功某事‖时应用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) 表示请求和允许。 -----Can I go now? ----- Yes, you can. / No, you can’t. 此时可与may互换。在疑问句中还可用could, might代替，不是过去式，只是语气更委婉，不能用于肯定句和答 语中。 ---- Could I come to see you tomorrow? ---- Yes, you can. 3) 表示客观可能性。 They’ve changed the timetable, so we can go by 30 / 39 精品文档 bus instead. This hall can hold00 people at least. 4) 表示推测，用于疑问句、否定句和感叹句中。 Can this be true? This can’t be done by him. How can this be true? 二、 may, might 1) 表示请求和允许。might比 may语气更委婉，而不 是过去式。否定回答时可用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. 用May I...,征徇对方许可时比较正式和客气，而用 Can I...,在口语中更常见。 2)用于祈使句，表示祝愿。 May you succeed! 3) 表示推测、可能性。 might不是过去式，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. 31 / 39 精品文档 三、 must, have to 1) 表示必须、必要。 You must come here on time. 在回答引出的问句时，如果是否定的，不能用mustn’ t，而用needn’t, don’t have to. ---- Must we hand in our exercise books today? ---- Yes, you must. ---- No, you don’t have to / you needn’t. 2) must是说话人的主观看法， 而have to则强调客 观需要。Must只有一般现在时， have to 有更多的时态形 式。 1( His play isn’t interesting, I really must go now. 2( I had to work when I was your age. 3) 表示推测、可能性 1( You’re Tom’s good friend, so you must know what he likes best. 2( Your mother must be waiting for you now. 3. The road is wet. It must have rained last night. 马路湿了，昨晚一定下雨了。 四、need need 作情态动词用时, 常用于疑问句、否定句。在肯 32 / 39 精品文档 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) need作实义动词用时， 有人称、时态和数的变化。 1.The house needs to be painted. 2. The house needs painting. 3. He needs to finish his homework today. 五、 shall 1) shall 用于第一人称，征求对方的意见。 What shall we do this evening? 2) shall 用于第二、三人称，表示说话人给对方的命 令、警告、允诺或威胁。 1. You shall fail if you don’t work hard. 2. He shall have the book when I finish it. 3. He shall be punished. 六、 will, would 1) 表示请求、建议等，would更委婉。 Will / Would you pass me the ball, please? 2) 表示意志、愿望和决心。 1. I will never do that again. 2. They asked him if he would go abroad. 33 / 39 精品文档 3) would表示过去反复发生的动作或某种倾向。would 表示过去习惯时比used to正式，且没有―现已无此习惯‖ 的含义。 1. During the vacation, he would visit me every other day. 2. The wound would not heal. 4) 表示估计和猜想。 It would be about ten o’clock when she left home. 七、 should, ought to 1) should, ought to表示―应该‖，ought to表示 义务或责任，比should语气重。 1. I should help her because she is in trouble. 2. You ought to take care of the baby. 2) 表示劝告、建议和命令。should, ought to可通用， 但在疑问句中常用should。 1. You should / ought to go to class right away. 2. Should I open the window? 3) 表示推测 should , ought to , must。 1.He must be home by now. 2.He ought to/should be home by now. 3. This is where the oil must be. 34 / 39 精品文档 4. This is where the oil ought to/should be. 总结 初级经济法重点总结下载党员个人总结TXt高中句型全总结.doc高中句型全总结.doc理论力学知识点总结pdf 一、猜测: must, may, might, can, could 只能用于肯定句,非常肯定的猜测 ,表示可能的猜测 /疑问句,过去时用could 表示预测“应当” 二、情态动词否定式的常考点有: mustn’t 禁止、严禁、不准 needn’t不必要、没必要 can’t不可能 may not可能不、或许不 shouldn’t不应该(=ought not to ) 三、情态动词+ have done 表示对过去发生的事情的推测,批评,反悔等意 should have done 本应该做而没做 ought to have done 本应该做而没做 could have done 本可以做而没做 needn’t have done不必做的做了 may/ might have done可能做了某事 must have done一定做了 can’t have done一定没有做 练习题 1)A computer ___think for itself, it must be told 35 / 39 精品文档 what to do. A. can’t B. couldn’t C. may not D. might not 2).The fire spread through the hotel very quickly but everyone ____ get out. A. had to B. would C. could D. was able to 3)--Where is my uncle, Mary? --He ___ in the bedroom. A. must have beenB. must be C. may have been D. should have been 4)Peter ___ come with us tonight, but he isn’t very sure yet. A. must B. may C. can D. will 5) --That must be a mistake. --No, it ___ a mistake. A. must not beB. needn’t be C. can not be D. would not be 6) It’s nearly o’clock. Dad ___ come home soon. A. can B. couldC. wouldD. should 7)--Are you coming to Jeff’s party? --I’m not sure. I ___ go to the concert tonight. 36 / 39 精品文档 A. must B. wouldC. shouldD. might 8)You ___ return the book now. You can keep it till next week if you like. A. can’t B. mustn’t C. needn’t 9)Johnny, you___ play with the knife, you ___ hurt yourself. A. won’t; can’t B. mustn’t; may C. shouldn’t, must D. can’t; shouldn’t 10).I didn’t hear the phone. I ___ asleep. A. must be B. must have been C. should be D. should have been 11).I didn’t see her in the meeting room this morning. She ___ at the meeting. A. mustn’t have spoken B. shouldn’t have spoken C. needn’t have spoken D. couldn’t have spoken 12).I can’t find Mr. Smith anywhere in the office building. Where ___ he have gone? A. mustB. canC. should D. need 高考 地理事物空间分布特征语文高考下定义高考日语答题卡模板高考688高频词汇高考文言文120个实词 考题: 1. I thought you _____like something to read, so 37 / 39 精品文档 I have brought you some books. A. mayB. mightC. wouldD. must 2. Where is my pen? I ____it. A. might lose B. would have lost C. should have lost D. must have lost 3. I didn’t hear the phone. I ___asleep. A. must be B. must have been C. should be D. should have been 4. ---There were already five people in the car, but they managed to take me as well. ----It ____a comfortable journey A. can’t be B. shouldn’t be C. mustn’t have been D. couldn’t have been 5. It’s nearly seven o’clock . Jack ___be here at any moment. A. must B. needC. should D. could 6. They will ______ run this machine on their own in three months. A. canB. couldC. mayD. be able to 7. That big cinema ______ seat,000 people. A. can B. should C. ought to D. is able to 8. — Could I borrow your dictionary? 38 / 39 精品文档 — Yes, of course you _______. A. mightB. willC. canD. should 9. — Might I watch TV after supper? — Yes, you ________. A. may B. must C. mightD. can 10. --Will you stay for lunch? 39 / 39