Module 5 Grammar and Culture Corner
执笔人：赵清芝孙晓妮审核人：王志超签批人：王艳艳
情态动词
情态动词是高考的重点考查项目，对学习情态动词的要求是：
首先、了解情态动词各自的基本意义及用法，然后掌握情态动词表示推测的用法（其中重点是对表过去推测的用法）还要注意带有情态动词的反意疑问句的用法。
情态动词的特征：
1.本身有词义，但完全。因此不能独立作谓语，只能和动词原形一起构成谓语。
2.后接动词不定式一律不带to
3.不随人称和数的变化。
情态动词各自的基本意义及用法
表四、need与dare的用法对比表
表五、should与ought to用法对比表
表七：used to 与would 用法对比表
情态动词表推测的意义：
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。按其可能性程度的高低排列为：
Must ﹥will ﹥would ﹥ought to ﹥ should ﹥ can ﹥ could ﹥ may ﹥ might 肯定 完全可能 很可能 可能 有可能 2.注意区分情态动词的否定的含义：
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 3.情态动词表推测具体运用：情态动词可以对现在、进行、过去推测
巩固提高
1. I’m going to Europe on vacation together with John if I ___ find the money. A. can B. might C. would D. need
2. --- ____you interrupt now? Can’t you see I’m on the phone?
--- Sorry Sir, but it’s urgent.
A. Can
B. Should
C. Must
D. Would
3. I use a clock to wake me up because at six o'clock each morning the train comes by my house.
A. couldn't
B. mustn't
C. shouldn't
D. needn't
4. One of our rules is that every student ____ wear school uniform while at school.
A. might
B. could
C. shall
D. will
5. Jack is a great talker. It’s high time that he _____ something instead of just talking.
A. will do
B. has done
C. do
D. did
6. Days later, my brother called to say he was all right, but ____ say where he was.
A. mustn’t
B. shouldn’t
C. wouldn’t
D. mightn’t
7. --- I don’t really like James. Why did you invite him?
--- Don’t worry. He come. He said he wasn’t certain what his plans were.
A. must not
B. need not
C. would not
D. might not
8. It _______ be the postman at the door, It’s only six o’clock.
A. mustn’t
B. can’t
C. won’t
D. nee dn’t
9. If you ______ smoke, please go outside.
A. can
B. should
C. must
D. may
10. --- Will you read me a story, Mummy?
--- OK. You ________ have one if you go to bed as soon as possible.
A. might
B. must
C. could
D. shall
11. --- Shall I inform him of the change of the schedule right now?
--- I am afraid you _____,in case he comes late for the meeting .
A. will
B. must
C. may
D. can
12. They have arrived at lunchtime but their flight was delayed.
A. will
B. can
C. must
D. should
13. You_________ buy a gift, but you can if you want to.
A. must
B. mustn’t
C. have to
D. don’t have to
14. --- I haven’t got the reference book yet, but I’ll have a test on the subject next month.
--- Don’t worry. You______ have it by Friday.
A. could
B. shall
C. must
D. may
15. --- May I take this book out of the reading room?
--- No, you . You read it in here.
A. mightn’t
B. won’t
C. needn’t
D. mustn’t
16. --- I take the book out?
--- I'm afraid not.
A. Will
B. May
C. Must
D. Need
17. "You __ have a wrong number," she said. "There's no one of that name here. "
A. need
B. can
C. must
D. would
18. --- Sorry, Professor Smith. I didn't finish the assignment yesterday.
--- Oh, you have done it as yesterday was the deadline.
A. must
B. mustn't
C. should
D. shouldn't
19. --- Why____ you be talking so loudly while others are studying?
--- I'm terribly sorry.
A. shall
B. must
C. will
D. may
20. --- We want someone to take charge of this project.
--- _____ the young man have a try?
A. may
B. shall
C. will
D. need
21. I promise she ____ get a nice present on her twentieth birthday.
A. shall
B. should
C. must
D. would
22. The World Wide Web is sometimes jokingly called the World Wide Wait because it ____be very slow.
A. should
B. must
C. will
D. can
23. --- Is there any flight to New York today?
--- I think there _____, for the weather is too bad.
A. may not be
B. shouldn't be
C. can't be
D. mustn't be
24. Mr. Bush is on time for everything. How ____it be that he was late for the opening ceremony?
A. must
B. should
C. can
D. may
25. --- Is it good to look up every new word when I come across it in reading?
--- No. You ___because you are likely to guess the meaning from the context.
A. can't
B. mustn't
C. don't have to
D. ought not to
Cultural Corner
Activity 1: Read this passage and answer the following questions:
1. What does Mr McCorquodale like doing when he travels?
2. What does he take with him when he travels?
3. On what conditions is he allowed to stick a pin in the map?
4. How does he evaluate China?
5. Why does Mr McCorquodale like traveling?
【英语】高一英语情态动词专项训练及答案含解析 一、单项选择情态动词 1．-- Catherine, I have cleaned the room for you. ---Thanks. You _______ it. I could manage it myself. A．needn’t do B．shouldn’t have done C．mustn’t do D．needn’t have done 【答案】D 【解析】 【详解】 考查情态动词辨析。句意: ---凯瑟琳，我已经为你打扫了房间。 - - -谢谢。你本不必这么做的。我自己能行。A. needn’t do不必做某事；B. shouldn’t have done本不应该做某事； C. mustn’t do禁止做某事；D. needn’t have done本不必做某事。由“Thanks. I could manage it myself”可知，needn’t have done“ 本不必做某事，而实际上做了某事”符合句意。故选D 项。 2．Frankly speaking, I am not sure whether I ________ this in the old days with that kind of equipment, which looks quite odd and ridiculous. A．should have done B．need have done C．would have done D．must have done 【答案】C 【解析】 【详解】 考查情态动词+have done。句意：坦率地说，我不确定在过去我是否会用这种设备做这件事，这看起来很奇怪和可笑。A. should have done表示本应该做某事，而实际上没有做某事；B. need have done表示本来需要做某事而没有做；C. would have done虚拟语气，表示对过去事情的假设，意思是“本来会做”；D. must have done表示对过去事情的肯定推测，译成“一定做过某事”。由“in the old days”可知，本句表示对过去事情的假设。故选C项。 3．My sister met him in the street yesterday afternoon, so he ______ your lecture. A．sho uldn’t have attended B．couldn’t have attended C．mustn’t have attended D．needn’t have attended 【答案】B 【解析】 试题分析：考查情态动词用法。Shouldn’t have done本不应该做某事，实际上却做了（虚拟语气）；couldn’t have done不可能做某事（对过去情况的推测）；needn’t have done本不需要做某事，实际上却做了（虚拟语气）；句意：我的姐姐昨天下午在街上遇见了他，所以他不可能去听了你的演讲。故B正确。 考点：考查情态动词用法 点评：考本题是高考必考考点，一定要牢记句型意思。must have done过去肯定做了某事。should have done 本应该做而实际未做。can’t have done 过去不可能做了某事；shouldn’t have done 本不应该做而实际做了。 need have done 本有必要做某事；needn’t
高中英语情态动词精讲与解析 概说 助动词(auxiliary)主要有两类：基本助动词(primary auxiliary)和情态助动词(modal auxiliary)。基本助动词有三个：do, have和be；情态助动词有十三个：may, might; can, could; will, would; shall, should; must, need, dare, used to, ought to. 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： He didn't go and neither did she. The meeting might not start until 5 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 5 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. 情态助动词的特征 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? （构成完成进行体，本身无词义） I am afraid I must be going. （一定要） You may have read some account of the matter. （或许已经） 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不带to的不定式。如果我们把ought
情态动词 一、概述 情态动词表示说话人对某一动作或状态的态度，认为“可能、应当、必要”等等，但本身意义不完全，不能单独作谓语，必须和其他动词一起构成谓语。除ought, used, have后跟不定式外，其他情态动词一律跟动词原形。情态动词主要有：can/could, may/might, must, ought to, used to, need, dare, shall/should, will/would, have to等。 二、基本用法 （一）can和could的用法 1．表示能力，可译为“能，会”。 I can swim. 我会游泳。 Emily can dance well and her mother could dance well when she was young. The cinema can seat 1,000 people. I could not read such an easy book when I was 7 years old. 2．表示允许、许可，常用在口语中。could比can语气上要客气。 --- Could I use your dictionary? 我可以用一下你的字典吗？ ---Yes, go ahead. 可以，用吧。（或Yes, you can. 但不能说Yes, you could.） Could/ Can you tell me how to get to the zoo? 劳驾，你能告诉我怎么去动物园吗？ He asked me whether he could take the book out of the reading room. 3. 表示可能（理论上或是逻辑判断上）。 The temperature can fall to–60℃,that is60℃below freezing.气温可降至—60℃，也就是零下60℃。 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．表示推测，可用于肯定句（can罕见）、否定句和疑问句，但更常见于疑问句或否定句。在此种用法中can和could没有时态的区别，只是表示可能性的大小，can表示推测的可能性比could大。 Can he be ill at home? 他会是生病在家吗？ Can the story be true? 这个故事会是真的吗？
高中英语语法之情态动词 （一）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。 （二）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（或称不带to的不定式）一起构成谓语（除ought to作固定词组看待）。 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? （构成完成进行体，本身无词义） I am afraid I must be going. （一定要） You may have read some account of the matter. （或许已经） 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. （三）情态动词有四类：①只做情态动词：must,can(could),may(might),ought to ②可做情态动词又可做实义动词：need,dare ③可做情态动词又可做助动词：shall(should),will(would) ④具有情态动词特征：have(had,has) to,used to ⑤情态动词表猜测 （四）情态动词的基本用法 1. can (could) 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（理论上或是逻辑判断上）。 The temperature can fall to –60℃, that is 60℃ below freezing. 气温可降至—60℃，也就是零下60℃。 t) have enough money for a new car. 他不可能有足够的钱买新车。 He can′ t (couldn′ re walking around in the wood. You could start a fire. You mustn′ t smoke while you′
情态动词全解析 一、何谓“情态动词” 情态动词主要用来表示说话人的情感、态度等，是中学英语语法的重点，也是高考的热点，是单项填空必考的一个知识点。情态动词在近五年高考中主要考查四点：情态动词表示推测和可能性的用法；情态动词与虚拟语气；情态动词的表达“情感、态度、语气等”，情态动词表示“必要性”等方面的用法。 二、情态动词的特点 1.没有人称和数的变化。 2. 有些情态动词有过去式的变化: . will → would , can → could , may→ might , dare → dared 三、情态动词的否定形式 情态动词+ not +动词原形can not: can't , must not: mustn't , need not : needn't 四、情态动词的用法及相互间的区别（注意：这是常考的考点） 1. can , be able to be able to 表示经过努力后, 能够做到; be able to 有多种形式的变化。can 1). 表示体力或脑力方面的能力; 2). 表示允许、可能性。 could 是can的过去式, 表示过去有能力及过去存在的可能性; 用于疑问句表示委婉地提出问题。 1) The fire spread through the hotel very quickly but everyone ____ get out. A. had to B. would C. could D. was able to 2) -Will you stay for lunch -Sorry, __. My brother is coming to see me. A. I mustn't B. I can't C. I needn't D. I won't 表示询问或说明一件事可不可做; 表示某事有可能发生。might是may的过去式; 用在疑问中比may委婉、客气。 1) -May I take this book out of the reading-room -No, you mustn't. ( Yes, you may.) 2) -Might I make a suggestion -Yes, you may. 3. must 1). 表示必须要做的事: 必须 2) 表示很有把握的推断: 一定, 准是。have (has)to : have (has)got to 必须, 不得不。过去式: had to 3) -Must I get to the station before three o'clock -Yes, you must. ( No, you needn't. ) 4) I'm afraid you will have to wait a while. 5) She must be in the classroom now. 6) Mary ____ be in Paris, I saw her in town only a few minutes ago. A. mustn't B. shouldn't C. can't D. may not 4. shall 1) 在疑问句中, 用于第一、三人称表示说话人征求对方的意见或向对方请求。 2) 用于二、三人称,表示说话人给对方的命令、警告、允诺等概念。 1) - Shall I place an order with you now -No, you needn’t. -Shall he turn down the radio a bit -
人教版英语英语情态动词专项练习经典含答案 一、初中英语情态动词 1．—Must I clean the classroom now? —No, you_______. A. mustn't B. can't C. needn't 【答案】 C 【解析】【分析】句意：--我必须现在把教室打扫干净吗？--不，你不必。must I do …?的否定回答是No, you needn't 或者 No , you don't have to 。根据是否定回答，故选C。 2．—Where is Monica? I can't find her anywhere. —She be in the library. She loves reading books when she is free. A. must B. need C. can't 【答案】 A 【解析】【分析】句意：——莫妮卡在哪？我到处都找不到她。——她肯定在图书馆，她喜欢空闲时看书。A肯定，肯定句中表示推测，B需要，C不可能，否定句中表示推测，根据 She loves reading books when she is free ，可知是肯定句表示推测，故选A。 【点评】考查情态动词，注意情态动词表推测的用法。 3．Please don't make so much noise. I ________ hear the speaker very well. A. needn't B. can't C. shouldn't D. mustn't 【答案】 B 【解析】【分析】句意：请不要发出那么多噪音。我不能很好地听清楚发言者的话。needn't不必；can't不能；shouldn't不应该；mustn't禁止。根据前半句的Please don't make so much noise.可知别人发出了太多噪音，所以他无法听见演讲者的话，故用情态动词can't。故选B。 【点评】考查情态动词，结合句意和词义做出判断。 4．A hard-working man ______ become a great scientist, but a great scientist _______ be a hard-working man. A. can't; can B. may not; must C. can't; must D. may not; can 【答案】 B 【解析】【分析】句意：一个勤奋的人可能不会成为一位伟大的科学家，但是一位伟大的科学家一定是一个勤奋的人。can't不可能，不会；can可能，能，会；may not 可能不；must 必须，一定；结合句意，可知，第一个空为“可能不”，第二个空为“一定”，故答案为B。
英语情态动词专项练习题及答案含答案解析推荐精选 一、初中英语情态动词 1．——Do you have any plans for this summer vacation? ——I'm not sure. I ___ take a trip to Taiwan. A. must B. need C. may D. should 【答案】C 【解析】【分析】句意:一今天暑假你有什么计划吗?一我还不确定。我可能去台湾去旅行。A.必须，一定;B.需要，必要;C.可能;D.应该。根据句中I'm not sure可知，说话人还没有确定的计划，所以这只是一个可能，应选C。 2．All passengers ______ go through safety check before they take a plane. A. can B. may C. must D. could 【答案】 C 【解析】【分析】句意：所有乘客登机前必须接受安全检查。A. can能够，表示能力；B. may可以，表示许可；C. must必须；D. could可能，可以。登机前必须安检。故选C。【点评】情态动词词义辨析。以及can、may、must、could四个词的词义和用法。 3．— Sorry, I forgot to take money with me. Maybe I can't buy the book you like. — Mum, you ______ worry about it. We can pay by Alipay （支付宝）. A. can't B. needn't C. mustn't D. shouldn't 【答案】 B 【解析】【分析】句意：——对不起，我忘记带钱了。也许我不能买你喜欢的书。——妈妈，你不用担心。我们可以用支付宝支付。A. can't不能，指不允许或否定推测；B. needn't 不需，指没必要；C. mustn't不能，表禁止；D. shouldn't不应该，表建议。根据句意语境，本句是说妈妈不需要担心，故答案为B。 【点评】考查情态动词。理解句意并掌握情态动词的意义和用法区别。 4．— __________I wear a tie to Janet's birthday party? — No,you needn't. But do remember to bring her a present. A. Must B. Should C. Need D. Can 【答案】 A 【解析】【分析】句意：——我必须戴领带去参加Jane的生日聚会吗？——不，你不必，但是记住给她带个礼物。对于must的否定回答是用needn't。而should应该；need需要；can可以。所以根据回答可知选A。 【点评】考查情态动词的基本用法。 5．A hard-working man ______ become a great scientist, but a great scientist _______ be a
一、情态动词用法 1.情态动词的具体用法 A.能干can/could do; (经过努力)能干be able to (have the ability to do, be capable of doing) B.必须干/不得不干must / have to do; 不许干：mustn’t do C.(经允许)可以干may/ might do; 不可以干：may not do D.应该干should /ought to/ be to/ be supposed to do E.将要干will/would/shall do; (按法律，许诺，命令，威胁，第二三人称中) 将干shall do F.(某段具体时间)常干would do; (现在不做，过去常做) used to do G.宁愿做would rather do; 最好做had better do; 不妨做might as well do H.需要做need do ; 敢做dare do 2.情态动词表猜测 A.一定是must be ;一定已经干了某事must have done sth.; 一定不是can’t/couldn’t be ; 一定没干过某事can’t/couldn’t have done sth. B.可能（不）是may/might (not ) be; 可能已经（没）干某事may/might (not) have done sth. 3.情态动词与虚拟语气 A.本应该干某事（带有批评责备之意）should/ ought to have done sth.；本不该做了某事而做了shouldn’t /oughtn’t to have done sth B.本不必干某事needn’t have done sth. C.本可以干某事can/could have done sth. D.本（不会）干某事would (not) have done sth. E.真希望做过某事would like to have done sth. F.Should 在表建议的从句中： (a)It’s high time that sb. should do/did sth (b)It’s important sb. (should) do sth. (c)I suggest sb. (should ) do sth. 二、理解情态动词 Lucy is an outgoing lady. She can play many kinds of musical instruments. Actually, she could play the piano when she was 8 years old. Lucy also keeps taking exercise every day. She says that she has to do some sports because she must keep slim. “You shall get fat soon if you don’t take exercise every day.” She usually says to her friends. As for her, an elegant lady should try to keep fit. However, last week, she found that she might put on weight and she worried and decided to lose her weight. And these days she is always thinking that she may succeed soon if she tries all her best. However, she is always lack of time because she ought to take care of her children. One night after supper, she walked quickly in order to go dancing at the Tomorrow Park and she was late. On her way, she thought that the dancing must have
英语情态动词专项练习 I. 单项选择（40%） 1. --Let’s go to Taishan Park by taxi. –It’s not far. We ______ take a taxi. 2.A. needn’t B. can’t C. mustn’t D. couldn’t 2. I think Miss Gao must be in the library. She said she would go there. --No, she ______ be ther e. I have just been there. A. can’t B. mustn’t C. needn’t D. wouldn’t 3. You ______ play with fire, Tom. It’s very dangerous. A. needn’t B. may not C. mustn’t D. wouldn’t 4. As we know, fish ______ die out of water. A. may B. is going to C. can D. will 5. –Can you answer my question, Lily? –Yes, I ______. A. may B. need C. must D. can 6. –Excuse me, ______ you tell me the way to the nearest bus station? --Sorry, I can’t. I’m a stranger here. A. can B. need C. must D. may 7. --______ I have to show the school report to my parents, Miss King? --Yes, you do. A. Must B. Do C. Can D. May 8. When autumn comes, some tree leaves ______ red. A. sound B. turn C. smell D. taste 9. --______ we swim in that river? –No, you ______. It’s dangerous to swim there. A. Must, can’t B. Can, may not C. Shall, don’t D. May, mustn’t 10. After such a long journey, the children ______ be very tired now. A. can B. must C. have to D. need 11.You’ve made the same mistakes again. You ______ be more careful next time. A. can B. may C. had to D. should 12. --______ I fill in the check-in form right now, sir? --No, you needn’t. You can complete it this afternoon. A. May B. Can C. Would D. Must 13. –Must I finish reading the book today? --No. You ______ if you have something else to do. A. mustn’t B. couldn’t C. can’t D. don’t have to 14. You look tired now. You ______ stay at home and have a rest. A. had to B. had better C. would like to D. would rather 15. –Could I look at your pictures? –Yes, of course you ______. 16.A. could B. can C. will D. might 16. Look at those big black clouds. It ______ rain. Let’s hurry. A. must B. will C. would D. is going to 17. –Mum, may I watch TV now? --Sure, but you ______ help me with my housework first. A. can B. may C. must D. could 18. –Would you like to go swimming with me this afternoon? --I’d love to. But I’m afraid I ______. I have too much work to do.
高中英语情态动词用法归纳与练习 A: can / could = be able to 1 表示能力两种时态can (could)，其他时态要用be able to的形式 He can speak French. Was/were able to 可以表示成功做成某事的含义* managed to do / succeeded i n doing With our help, he was able to build the house. 2 表示请求或许可Could 比Can 更加客气* may Can I go now? Yes, you can. 3 表示推测或可能性，常用于否定句和疑问句 Can he be at school? Today is Sunday. He can't be at school. Can’t couldn’t/ Can ? Could? have done There is no light in the room. Can she have gone to bed? She can’t have gone to school----- it’s Sunda y. Could have done 可用在肯定句中表示过去存在的可能性* may have done She could have gone out with some friends yesterday. Could have done 可以表示虚拟语气 某事可能发生（并没有发生） It was silly to throw the TV out of the window. It could have hit somebody. 批评某人没有完成某事(本可以做某事) You are late again. You could have got up earlier. 4 can 表示客观上的可能性* Anybody can make mistakes. B: may and might 1 表示请求和允许类似用法can could(更加口语化) May I watch TV now? Yes, you may. 2 表示可能性; 猜测might比may更加不确定may/might have done 对过去的揣测* He may be busy these days. May not 可能不；不可能；一定不可 3 表示祝愿Wish you success! May you succeed!* C: must and have to 1 表示必须；一定要可以用have to 代替 must 现在；将来的必须而且是主观看法* have to 有多种时态而且强调客观情况 I really must stop smoking now. I had to leave early because I wasn’t feeling well. Must I come here?
英语情态动词用法详解 一、单项选择情态动词 1．Look! There are so many mistakes in your composition. You ________ have fixed full attention on it. A．can B．should C．need D．might 【答案】B 【解析】 【详解】 考查情态动词。句意：看！你的作文里有那么多的错误。你本应该把所有的注意力都集中在它上面的。表示“本应该做但实际上没有做”应该用should have done结构，can have done 表示可能；need表示需要；might have done表示可能做过某事；故选B。 2．---Hi, Johnson, any idea where Susan is? ---It is class time, so she __________ in the classroom now. A．can be B．must have been C．might have been D．should be 【答案】D 【解析】 考查情态动词的用法。A. can be可能，可以是；B. must have been一定（对过去事实肯定的推测）；C. might have been可能（对过去事实肯定的推测）；D. should be应该是。句意：—知道苏珊在哪里吗？—现在是上课时间，她应该在教室里。故答案选D。 3．The room is so clean. He ________ have cleaned it yesterday evening. A．will B．need C．can D．must 【答案】D 【解析】 【详解】 考查情态动词表推测。句意：房间如此干净，他一定是昨天晚上打扫过了。must have done 表示对过去发生的事情有把握的猜测，意思是“一定（做过）”，故D项正确。 4．— Excuse me, do you mind if I open the window? — Well, if you __________. I can put on more clothes. A．can B．may C．must D．shall 【答案】C 【解析】
情态动词 情态动词是高考考查的重点语法项目之一，2005年全国17套高考试题对此都有考查。下面就近几年来高考试题中出现的情态动词的考点进行归纳分析，以便同学们复习掌握。 一、情态动词表推测 1. 肯定的推测一般用must, should, may（might）或could（不用can），其中，must的语气最强，译为“肯定”、“准是”、“想必是”；should的语气次之，译为“很可能”、“应该”，指按常理推测；may（might），could的语气最弱，译为“也许”、“可能”。 ①Helen _______ go on the trip with us but she isn’t quite sure yet. （2005年安徽卷） A. shall B. must C. may D. can ②—I’ve taken someone else’s green sweater by mistake. —It ___ Harry’s. He always wears green. （2005年广东卷） A. has to be B. will be C. mustn’t be D. could be ③I have lost one of my gloves. I _______ it somewhere.（2005年北京春季卷） A. must drop B. must have dropped C. must be dropping D. must have been dropped ④If I ____ plan to do anything I wanted to ,I’d like to go to Tibet and travel through as much of it as possible. （2005年湖北卷） A. would B. could C. had to D. ought to 2. 否定推测分为两种情况： 1）语气不很肯定时，常用may not, might not或could not，译为“可能不”、“也许不”。 You might just as well tell the manufacturer that male customers ______ not like the design of the furniture. （2004年上海春季卷） A. must B. shall C. may D. need 2）否定语气较强时，则用can’t，译为“根本不可能”、“想必不会”，表示惊异、怀疑的感情色彩。 ①—Do you know where David is? I couldn’t find him anywhere. —Well. He ______ have gone far——his coat’s still here.（2005年湖北卷） A. shouldn’t B. mustn’t C. can’t D. wouldn’t ②— Isn’t that Ann’s husband over there? — No, it _______ be him I’m sure he doesn’t wear glasses. （2004年全国卷Ⅰ） A. can’t B. must not C. won’t D. may not 3. 疑问句中的推测，往往用can或could。 Mr. Bush is on time for everything. How ______ it be that he was late for the opening ceremony？（2001年上海春季卷） A. can B. should C. may D. must 4. 对已发生事情的肯定推测常用“must, may, might等+完成式”；否定推测常用“can, could, may, might等+完成式”。 ①I was on the highway when this car went past followed by a police car. They _______ at least 150 kilometers an hour.（2005年重庆卷） A. should have been doing B. must have been doing C. could have done D. would have done ②He _______ have completed his work; otherwise, he wouldn’t be enjoying himself by seaside. （2005年北京卷）
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 could 1)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/could Eg.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 laughing Can’t be (it) 控制不住，没有办法 It can’t be helped Can’t....without 没有...就不能 One can’t succeed without perseverance.