专项：情态动词
一考点：情态动词的用法和辨析，情态动词表示推测和可能，由情态动词引导的一般疑问句的回答。
二类型：1 只是情态动词：can, could, may, might, must
2 可做情态动词，可做实义动词：need, dare
3 可做情态动词，可做助动词：will, would, shall, should
4 特殊：have to, ought to, used to
三特征：1 有一定的词义，但不能单独作谓语，必须与行为动词和系动词连用构成谓语。
2 无人称和数的变化。（have to 除外）
Eg: He has to stay here.
3 后接动词原形。
4 具有助动词作用，可构成否定，疑问或简短回答。
四用法：
1. can ①表示能力，“能，会”。Eg : Can you play basketball?
②表示怀疑，猜测，常用于否定句或疑问句。
Eg :Li hua can’t be in the classroom.
③表示请求，允许，多用于口语，译“可以”= may.
Eg: you can go now.
④can 开头的疑问句，肯定句，否定句用can或can’t.
2.could①can 的过去式，表示过去的能力。
Eg :I could swim when I was seven years old.
②could 开头的疑问句，肯定和否定回答用could, couldn’t如果could
表示现在的委婉，用can 回答。
Eg: Could I have a drink? Yes, you can.
3.may①表示推测，“可能，也许”，用于肯定句。
Eg: He may come tomorrow.
②表示请求，“许可,可以”。Eg: May I borrow your book?
注：表示请求，许可时，主语为第一人称的一般疑问句，否定回
答用mustn’t“不可以，禁止，不许”,不用may not“可能不”。
③表示祝愿。Eg :May you success.
4.might①表示“可以”，用于过去时中。
Eg: He told me I might smoke in the room.
②用于现在时，表示说话更委婉，礼貌。
Eg:He might be doing his lessons now.
5.must①表示“必须，应该”。
②表示推测，常用在肯定句中，表“一定”。
Eg:There is someone knocking at the door.It must be Jim.
③否定句中，mustn’t 表示禁止，“不允许”。
④以must 开头的疑问句，肯定句回答用must,否定回答用needn’t , 表示
“不需要，不必”=“don’t have to”.
⑤表示“偏偏”。Eg: Must you play the piano at this time.
6.need①情态动词：+do,用need 提问或回答，肯定句回答用must ,否定句回答
用needn’t. Eg: You needn’t come to school so early.
②实义动词：+to do ,用助动词提问和否定。
③+doing 表示被动。
④needn’t have done 表示没必要做某事但是做了。
Eg: I actually needn’t have bought so much wine.
7.dare①情态动词，多用于疑问句，否定句，条件句中。
Eg: I’m afraid you dare not to do such a thing.
注：I dare say 习惯说成“也许，我想”。
Eg: It will rain this afternoon, I dare say.
②实义动词：dare to do ,用于肯定句中，当用于否定句或疑问句时，to 可
以省略。Eg: This student doesn’t dare to raise any question in class. 8.shall①用于第一人称表示征求意见，询问。
Eg: Shall I open the window?
Shall we have lunch here?
②表示说话人的态度，“命令，警告，允诺，威胁”。
Eg: You shall finish your homework first.
③用于第三人称，在条约，规定，法令等文件中表示义务或规定，“应
该，必须”。（不常用）
9.should①表示义务，责任“应该”。Eg:We should obey traffic laws.
②作为shall 过去式，用于第一三人称，表示征求意见。Eg:Mr lee
asked if he should get his visa.
③表示“竟然”。
Eg: It’s unthinkable that the boy should sing such a beautiful song.
④表示说话人的特殊情感，如惊奇，愤怒，失望等。
Eg: How should I know?
⑤表示劝告，建议，“应该”。
Eg: You should listen to your teacher.
10.will①用于第二人称表示询问，请求，也可以表达现在的“意愿”。Eg: Will you
pass me the book?
②表示意愿，决定，允诺，用于各种人称。
Eg: I will try my best to help you.
③表示规律性的“注定会”。
Eg: People will die without air or water.
11.would①表示过去的意愿或委婉询问。
Eg: Would you tell me the way to the station?
12.have to①“必须，不得不”，强调客观需要，含有时态的变化。
Eg: I’ll have to ask Jim instead.
②区别：must 表示“必须，应该“，主观看法。
13.ought to ①表示职责，义务或要求，及人们应该去做的正确的事或好事。Eg:
Humans ought to stop polluting nature.
②比should 语气强，ought to 反映客观情况，should表示主观看
法。
③ought to have done 本应该做而没有做。
Eg: You are late. You ought to have arrived five minutes earlier. https://www.doczj.com/doc/1c11963523.html,ed to①表示“过去常常，过去是“，没有人称和数的变化，可以和过去的
时间状语连用。否定形式：usedn’t to 或didn’t use to ,疑问词将
use提前或Did…use to …?
Eg: He didn’t use to be so careless.
②区别would :带有主观性，并且现在做不做不知道。Used to :客观
性，和现在进行对比，过去常常，现在就不怎么做了。
Eg: He would phone me on Sunday.
Eg: I used to be very fond of music when I was young.
③区别：be used to doing （情态动词）习惯于…
Used to do （情态动词）过去是，过去常常…
Be used to do (过去式) 被用来做…
Eg: I am already used to noisy city life here.
My parents used to live in South America.
This machine is used to cut up waste paper.
15.其他：⑴had better do 最好做某事Eg: You had better stay at home.
否定：had better not do
⑵be able to与can 表示能力时用法相同，但前者有时态的变化，有
能力成功做某事。
Eg: We will be able to come back next week.
专题练习：
1( ) 1 John___ come to see us tonight, but he isn't very sure yet.
A. may
B. can
C. has to
D. must
( ) 2 They ___ do well in the exam.
A. can be able to
B. be able to
C. can able to
D. are able to
( ) 3 -May I take this book out?
-No, you___. A. can't B. may not C. needn't D. aren’t
( ) 4 You___ go and see a doctor at once because you're got a fever.
A. can
B. must
C. dare
D. would
( ) 5 -Can you speak Japanese?
-No, I____. A. mustn't B. can't C. needn't D. may not
2( ) 1 -He___ be in the classroom, I think.
-No, he ___ be in the classroom. I saw him go home a minute ago.
A. can; may not
B. must; may not
C. may; can't
D. may; mustn’t
( ) 2 -Shall I get one more cake for you, Dad?
-Thanks, but you___, I've had enough. A. may not B. must not C. can't D. needn’t ( ) 3 Even the top students in our class can't work out this problem, so it be very difficult. A. may B. must C. can D. need
( ) 4 He isn't at school. I think he ___ be ill. A. can B. shall C. must D. has to ( ) 5 ___ I take this one? A. May B. Will C. Are D. Do
3( ) 1 The children___ play football on the road. A. can't B. can C. mustn't D. must ( ) 2 You ___ be late for school again next time.
A. mustn't
B. needn't
C. don't have to
D. don't need to
( ) 3 -Must I do my homework at once?
-No, you___. A. needn't B. mustn't C. can't D. may not
4( ) 1 His arm is all right. He___ go and see the doctor.
A. has not to
B. don't have to
C. haven't to
D. doesn't have to
( ) 2 He had to give up the plan, ___ he? A. did B. didn't C. does D. doesn't
( ) 3 They had to walk here, ___ they? A. mustn't B. did C. didn't D. hadn't
5( ) 1 He had better stay here, ___ he? A. didn't B. don't C. hadn't D. isn't
( ) 2 You'd better___late next time. A. not to be B. not be C. won't be D. don't be ( ) 3 You'd better ___ your hair ___ once a month.
A. had; cut
B. had; cutted
C. have; cut
D. have; cutted
( ) 4 You___ ask that man over there. Maybe he knows the way.
A. had better not to
B. had not better
C. had better
D. had better not
6( ) 1 -Shall we go and visit the History Museum next Sunday?
A. Here you are
B. Sorry, I can't
C. Yes, please
D. Let me try
( ) 2 -Why don't you ask Mike to go with us?
-Thanks, ___. A. I will B. I won't C. lean D. I may
( ) 3 -___ I take the newspaper away?
-No, you mustn't. You____read it only here.
A. Must; can
B. May; can
C. Need; must
D. Must; must
7( ) 1 Excuse me. ___ you please pass me that cup?
A. Do
B. Should
C. Would
D. Must
( ) 2 ___ you like to have another try?
A. Could
B. Will
C. Would
D. Do
( ) 3 -Would you like to go boating with us?
-Yes, ___.A. I'd like B. I want C. I'd like to D. I do
8( ) 1 You___ worry about your son. He will get well soon.
A. needn't
B. can't
C. mustn't
D. have to
( ) 2 The poor man needs our help, ___ he?
A. need
B. needn't
C. does
D. doesn't
( ) 3 -Must we do our homework first?
-No, you___. You may have a rest first.
A. mustn't
B. needn't
C. may not
D. can't
情态动词知识点总结 一、初中英语情态动词 1．Rock music ______ sound popular with the young, but it's not the favor of the aged people. A. must B. need C. should D. may 【答案】 D 【解析】【分析】句意：摇滚音乐在年轻人中听起来受欢迎，但是它不受上了年龄的人的 赞同。must, 表示猜测时，指把握比较大的肯定猜测，肯定……；need需要；should,应该；may，表示把握比较小的肯定猜测，可能，也许。结合句意，故选D。 【点评】考查情态动词辨析，注意几个常见情态动词的意思和用法。 2．——Shall we meet at the station at 7 am? ——In fact, we _______. The train _______ until 9 a. m. A. mustn't; doesn't leave B. mustn't; leaves C. needn't; won't leave D. needn't; will leave 【答案】 C 【解析】【分析】need，需要，否定式是needn't；must的含义是必须一定，其否定形式mustn't表示禁止的含义。句意：我们上午七点在车站见面好吗？——实际上，我们不必。 火车到上午九点钟才出发。结合语境可知后一空描述的是将要发生的动作，故用一般将来 时态。选C。 【点评】情态动词的考查是初中英语考查的重点，平时学习中一定要熟记这些词的基本词 义及用法上的不同，注意其用法及在句子中表达语气的不同。考试中结合语境选择合适答案。 3．We __________ pay to get into the concert. It's free. A. can't B. mustn't C. might not D. don't have to 【答案】 D 【解析】【分析】句意：我们进入音乐会不必付钱。这是免费的。A.can"t 不可能； B. mustn"t 禁止； C.might not 可能不；D. don"t have to不必。根据It's free.可知音乐会是免费的，因此不必付钱。故选D。 4．—Where is George? —He _______ be here just now. His coffee is still warm. A. need B. can't C. must D. shouldn't 【答案】 C 【解析】【分析】句意：——乔治在哪里？——他刚才一定在这里，他的咖啡还是热的。A.
情态动词 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 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℃。 He can’t (couldn’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 (could) they have gone to? 他们会去哪儿了呢？ He can’t (couldn’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 (Could) 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 (might) 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 (Might) I ask for photo your baby? 我可以要一张你宝宝的照片吗？ 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.
英语情态动词用法总结(完整) 一、单项选择情态动词 1．--- Difficulties always go with me! --- Cheer up! If God closes door in front of you, there be a window opened for you. A．must B．would C．could D．can 【答案】A 【解析】 【详解】 考查情态动词辨析。句意：——困难总是伴随着我！——高兴点! 如果上帝在你面前关上了门，一定有一扇窗户为你打开。A. must必须；B. would将要；C. could能，会；D. can能，会。must表示对现在的状态推测时，意为“一定”，表示可能性很大的推测。符合语境。故选A。 【点睛】 1) must用在肯定句中表示较有把握的推测，意为"一定"。 2) must表对现在的状态或现在正发生的事情的推测时， must 后面通常接系动词be 的原形或行为动词的进行式。 3) must 表示对已发生的事情的推测时，must 要接完成式。 4) must表示对过去某时正发生的事情的推测，must 后面要接完成进行式。 5) 否定推测用can't。 本句中的。must表示对现在的状态推测时，意为一定，表示可能性很大的推测。符合第2点用法。 2．Paul did a great job in the speech contest. He many times last week. A．need have practised B．might practise C．must have practised D．could practise 【答案】C 【解析】 【详解】 考查情态动词。句意：保罗在演讲比赛中表现得很好。他上星期一定练习了很多次。must have done是对过去发生的动作最有把握的猜测，意思是“一定”。故C选项正确。 3．He is a bad-tempered fellow, but he ________ be quite charming when he wishes. A．shall B．should C．can D．must 【答案】C 【解析】 【详解】 考查情态动词辨析。句意：他是个脾气不好的家伙，但当他希望自己有魅力的时候，他可
最新英语语法情态动词归纳总结 一、单项选择情态动词 1．Mr. Smith is almost on time for everything. How ________ it be that he was late for the meeting? A．can B．should C．may D．must 【答案】A 【解析】 【详解】 考查情态动词辨析。句意：史密斯先生几乎任何事情都是准时的。他怎么可能开会迟到了？ A. can可能，可能性，表示可能性时，常用于否定句和疑问句中，且有时还带有“惊奇、不相信” 等感情色彩。B. should 应该； C. may也许，表示可能性时常用于肯定句中，不用于疑问句中。D.must常用于肯定句中表推测，“一定……”的意思；本题是强调句型的一个变式：强调其特殊疑问句how的形式。根据前句“斯密斯先生几乎是很准时”可推测出“怎么可能开会迟到呢？”。根据句意可知，用于疑问句中的“可能性”且有不相信的色彩，四个选项只有“can”符合题意。故选A 【点睛】 情态动词就是表示说话者对事情的一种看法，也就是一种语气。情态动词的用法一直是命题者常设置的考点和重点，平时要加强记忆。 2．--- Oh, my God! I just missed the last bus back home. --- That’s really bad. I’m sure you ______ it, but you just didn’t hurry up. A．had caught B．could have caught C．could catch D．can catch 【答案】B 【解析】 【详解】 考查情态动词+have done结构。句意：——哦,我的上帝!我刚好错过了回家的末班车。——这是非常糟糕的。我肯定你能赶上，但你就是不抓紧。could have done“本来能做而没有做”。故选B。 3．-- Did Jim come? -- I don’t know. He _______ while I was out. A．might have come B．might come C．must have come D．should have come 【答案】A 【解析】 【详解】 考查情态动词推测用法。句意：Jim来了吗？--我不知道，在我不在的时候，可能来过。根据前文I don’t kn ow.可知，说话者不知道Jim来没来，因此后文推测来过，但是语气很不确定，故可知选A。对过去情况的推测为情态动词+have done，must have done 一定做了某
情态动词 一、考点、热点回顾 【词汇辨析】 1.sometimes/ some times/sometime/ some time: sometimes: “有时”=at times. He is sometimes late for school. some times: “几次” I have been to Nanjing some times. sometime: “某一时刻” I bought it sometime last spring. We’ll meet again sometime next week. some time: “一段时间” We have to stay here for some time. 2. many/ much/ a few/ a little/ few/ little (1)many修饰可数名词，much修饰不可数名词；都表示许多。例如： 许多书许多牛奶 (2)a few和a little都表示"有一点儿"，侧重于肯定，相当于"some"，但 a few修饰可数名词， a little修饰不可数名词，例如： He has a few friends in London. ---Would you like some coffee? ---Yes, just a little. (3)few和little表示"几乎没有"，侧重否定。few后接可数名词，little后接不可数名词。例 如： He is a strange man. He has few words. Hurry up, there is little time left. 【固定搭配】加-ing be busy doing sth.忙于做…… eg: Mother is busy cooking. look forward to + doing sth. 期待做…… eg: Tom l ooks forward to seeing his father again. Thank you for (doing) sth. 为了…感谢你 eg: Thank you for your help. have fun doing sth愉快地做某事 eg: I had great fun playing in the water. =have a good time doing sth eg: I had a good time playing in the water. have problem/trouble/difficulty (in)doing sth.做某事有困难 eg: I have difficulty finishing my homework in 2 hours. 【情态动词】又叫情态助动词。它们具有以下特点： ⑴ 它们必须与其他动词连用，即：情态动词＋动词原形 表示说话人对所述动作的看法，如需要、可能、意愿或怀疑等。 ⑵绝大多数情态动词没有人称和数的变化，即第三人称单数不加-s （以be和have 开头的情态动词短语除外）。 ⑶ 在意义上，情态动词具有“多义性”。 例：can既可表示能力，又可表示可能、允许等意义。 【情态动词的基本用法】
一、选择题 1．One ______ easily lose his way when he visits or comes to a new place. A．may B．must C．need D．should 2．—Is that Kate’s green bike? —It ____________be hers. She likes pink. A．can’t B．could C．mustn’t D．might 3．—Can we walk across the road now? —No, we . We have to wait until the light turns green. A．couldn’t B．needn’t C．shouldn’t D．mustn’t 4．---Mum, must I finish my homework today? ---No, you . Tomorrow is Sunday and you may have a rest today. A．shouldn’t B．mustn’t C．can’t D．don’t have t o 5．A: Is Jim coming by train? B: I’m not sure. He _______ drive his car. A．must B．may C．need D．should 6．You look quite tired. You'd better ________ a good rest. A．stop to have B．stop having C．to stop to have D．to stop having 7．From March 23rd, 2013, anyone under the age of 14 ________ go into Disneyland alone. A．couldn’t B．mustn’t C．needn’t D．mightn’t 8．—Can I take some milk and biscuits to the reading room? —No, our school has a rule that students _______ eat or drink there. A．can’t B．mustn’t C．needn’t D．may not 9．— Mom, I got a big box from express(快递). What is it? —I’m not sure. It ________be a present from your grandmother. A．should B．might C．must D．will 10．(2018·山东临沂) Could you please speak a little louder? I ______ hear you very well. A．can’t B．must n’t C．shouldn’t D．needn’t 11．-Could you help me with my English homework, Nancy? -Of course I____________. Glad to help. A．could B．can C．must D．do 12．My head teacher has made a set of rules to show what we students ________ and ________ not do in class. A．must; must B．will; will C．need; need D．might; might 13．Since the road is muddy,it ________last night, ________? A．must be rained; wasn’t it B．must have rained; didn’t it C．must rained; didn’t it D．must have rained; wasn’t it
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. 情态动词有一定的词义。 2. 情态动词不能单独做谓语，它必须和其他动词的原形一起构成谓语。 3. 情态动词没有人称，数的变化。 （三）情态动词的结构和意义 1.情态动词的基本句型 ?肯定句：主语+情态动词+动词原形+...... ?否定句：主语+情态动词+not+动词原形+...... ?疑问句：情态动词+主语+动词原形+...... 2. 情态动词的意义 must“必须”；can/could“能，会”；may/might “可以”；should“应该”； would“愿，要”；have to“不得不”；need“需要” （四）情态动词的基本用法 1.can (could主要指过去时间) 1）表示人或物本身所具有的能力，意为“能，能够，会” : Two eyes can see more than one. / I can swim very well. 2）表示可能（理论上或是逻辑判断上） He can’t (couldn’t) have enough money for a new car. 3）表示允许： Can I have a look at your new pen? He asked whether he could take the book out of the reading-room. 4）表示对现在动作或状态的猜测，主要用于否定句和疑问句中或感叹句中: He can’t (couldn’t) be over sixty.他不可能超过六十岁。 5）could表示比can更委婉客气的提出问题或陈述看法，指的是现在时间。 Can (Could) you lend me a hand? 帮我一把好吗？ 2. may (might) 1）表允许，询问或说明一件事可不可以做，might指过去时间；但在疑问句中might也可指现在时间，语气比may更委婉。 May (Might) I ask for a photo of your baby? 我可以要一张你宝宝的照片吗？ 在回答以may引起的问句时，肯定回答是一般可仍用may,或Yes, please. / Certainly./Sure./Of course. ； 否定回答根据说话人的语气由强到弱分别选用: must not(mustn’t)（禁止）/ had better not（最好别）/ may not（不行） 2) may表可能,但所表示的可能性不如can所表示的那样肯定。might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。 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（have to表示客观需要） 1）表示“必须”（主观看法）时，用于肯定句或疑问句；用于否定句时表示“禁止”。 We must do everything step by step. 我们一切都必须循序渐进地做。 You must get home before 9:00. 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。 3)must的疑问句，肯定回答用must，否定回答用needn’t或don’t have to。 4. should 1）表责任或义务，意为“应该”，用于各种人称。
专项：情态动词 一考点：情态动词的用法和辨析，情态动词表示推测和可能，由情态动词引导的一般疑问句的回答。 二类型：1 只是情态动词：can, could, may, might, must 2 可做情态动词，可做实义动词：need, dare 3 可做情态动词，可做助动词：will, would, shall, should 4 特殊：have to, ought to, used to 三特征：1 有一定的词义，但不能单独作谓语，必须与行为动词和系动词连用构成谓语。 2 无人称和数的变化。（have to 除外） Eg: He has to stay here. 3 后接动词原形。 4 具有助动词作用，可构成否定，疑问或简短回答。 四用法： 1. can ①表示能力，“能，会”。Eg : Can you play basketball? ②表示怀疑，猜测，常用于否定句或疑问句。 Eg :Li hua can’t be in the classroom. ③表示请求，允许，多用于口语，译“可以”= may. Eg: you can go now. ④can 开头的疑问句，肯定句，否定句用can或can’t. 2.could①can 的过去式，表示过去的能力。 Eg :I could swim when I was seven years old. ②could 开头的疑问句，肯定和否定回答用could, couldn’t如果could 表示现在的委婉，用can 回答。 Eg: Could I have a drink? Yes, you can. 3.may①表示推测，“可能，也许”，用于肯定句。 Eg: He may come tomorrow. ②表示请求，“许可,可以”。Eg: May I borrow your book? 注：表示请求，许可时，主语为第一人称的一般疑问句，否定回
情态动词的总结（综合性） 情态动词： 1.只能作为情态动词的：can/could may/might ought to must 2.可作为情态动词，也可作为实义动词：need dare 3.可作为情态动词，也可作为助动词:should/shall will/would 4.相当于情态动词：have to used to Can/could ： 1、能力ability （could是其过去式） 2、猜测用于否定句和疑问句中（could是其过去式） 3、可能性征求许可（could比它更委婉一些） 4、有时会，一时可能 be able to 过去某一次成功做某事，指的是经过一定的努力才得以成功 may/might 1、征求许可 2、推测，用于肯定句当中 3、祝愿 might表推测，语气更加不肯定，指现在或将来，只有在宾语从句当中，才有表示过去的可能性Will/would 1、纯将来时态，意愿意志决心（would是其过去式） 2、习惯性、倾向性总是总会（would是其过去式） 3、表示请求用于第二人称的疑问句当中would更加委婉 4、一时拒绝，不愿听从命令 would和used to的区分： would：过去常常，但是只能表示过去的习惯性动作，不能表示状态，现在可能这样，也可能不这样Used to：过去常常，既可表示过去的动作，也可表示过去的状态，不过现在不再是那样的状态Shall 1、将来时态，第一人称陈述句 2、表示征求许可，第1、3人称的疑问句当中 3、第二人称或第三人称，表示许可，警告，命令，决心，威胁，法律条文 Should 1、义务建议，应该 2、表示推测按理应该 3、表示惊讶，不满，竟然 Must 1、必须做（责任义务） 2、推测，肯定句当中，一定、准是、语气非常肯定 3、偏要，指做一些让人不满的事 以must开头的疑问句和以need开头的疑问句回答（略） Need 1、做情态动词（用于否定句和疑问句当中） 2、做实义动词 情态动词+have done的形式 A.对过去事实的推测 1、must have done 一定做了 2、can’t/couldn’t have done 不可能做了 3、may/might have done 可能已经做了某事 B.对过去事实的虚拟 1、ought to /should have done 本该做却没做 2、shouldn’t have done 本来不该做却做了 3、needn’t have done 本不必做的事情却做了 4、could have done 本来能做的事情却没有做
一、选择题 1．You should________ the teacher________being late for school. A．apology to, about B．apologize to, for C．apologies to, for D．apologize to, on 2．-Listen! A wolf is crying! -It _______ be a wolf, because a wolf never comes out at this time. A．mustn’t B．needn’t C．can’t D．don’t 3．— Do you think it is safe to shop online? — I think so. On Taobao, customers return goods with no questions asked，but they ______ pay delivery costs. A．can’t; can B．must; must C．can; have to D．mustn’t; can 4．—Is Wendy in the classroom now? —I’m not sure. She ________ be there. I saw her in the library ten minutes ago. A．may not B．must not C．shall not D．would not 5．The designer has tried every possible way to make the robot light, so you _____ worry about its weight. A．must B．may C．can’t D．needn’t 6．You______ worry about your lessons. Be careful next time and you will get a good mark. A．don’t need to B．not need C．needn’t to D．don’t need 7．---Mum, must I finish my homework today? ---No, you . Tomorrow is Sunday and you may have a rest today. A．shouldn’t B．mustn’t C．can’t D．don’t have to 8．A: Is Jim coming by train? B: I’m not sure. He _______ drive his car. A．must B．may C．need D．should 9．—Doesn’t Frank like staying at home and looking after his little sister? —_______, but he ________ because both of his parents work. A．Yes; has to B．No; has to C．Yes; doesn’t have to D．No; doesn’t have to 10．—Have you heard about the temperature of the earth will rise to 59℃ in 2020? —Don’t worry! The news _______ be true. A．must not B．may not C．needn’t D．will not 11．The milk tastes bad. You’d better_______. A．throw it away B．to throw it away C．throw them away D．to throw them away 12．I’m sorry, children over 1.4 meters________pay the full price for the show. A．may B．must C．can D．ought to 13．He like coffee. I see him drink a cup at times.
初中英语情态动词用法归纳 情态动词有具体的词义，但也同助动词一样，需要与其他词语一起构成句子的谓语，另外情态动词没有人称和数的变化，情态动词后必须跟动词原形。 考点一：can，may，must 等情态动词在陈述句中的用法： 1. can 的用法： (1).表示能力、许可、可能性。表示能力时一般译为“能、会”，即有种能力，尤其是生来具备的能力，此时may和must均不可代替它。如：She can swim fast, but lean 她能游.得很快，但我不能。I can see with my eyes我用眼睛看。 (2).表示许可，常在口语中。如：You can use my dictionary. 你可以用我的字典。 (3).表示推测，意为可能”常用于否定句和疑问句中，此时can'译为不可能”女口：Can the news be true?这个消息会是真的吗？一Can it be our teacher那个人有可能是我们老师吗？一No, it can' t be our teacher. He is on a visit to the GreatlW不可能。咱们老师正在游览长城呢。 【例题】一I think Miss Gao must be in the library. She said she would go ther—No. She __be there, I have just been there. A.can ' t B.mustn ' t C.needn ' t D.wouldn 't 【解析】根据下文我刚去过那儿”可知，应为不可能” can'表示推测［答案］A 2. could 的用法： (1).can的过去式，意为能、会”表示过去的能力。女口：He could write poems when he was 10. 他十岁时就会写诗。 (2). could在疑问句中，表示委婉的语气，此时could没有过去式的意思。如:Could you do me a favour?你能帮我个忙吗？一Could I use your pen?我能用一下你的钢笔吗？一Yes, you can可以。(注意回答) 3. may 的用法： (1) .表示请求、许可，比can正式，如：May I borrow your bike?我可以借你的自行车吗？You may go home now现在你可以回家了。 【例题】一______ I borrow your MP3?- Sure . Here you are. A. May B.Should C.Must D. Would 【解析】在此处表示请求，意为做……可以吗”答案：A (2) .表示推测，谈论可能性，意为“可能，或许”，一般用于肯定句中。如：It may rain tomorrow .
一、选择题 1．—Could you please hang out with me this afternoon? —______. I have to make a plan for Clean-Up Day. A．Sorry, I couldn’t B．Sorry, I can’t C．Sure, I can D．Sure, I could 2．Since you are very tired, you ______ finish the work today. A．needn’t B．may not C．mustn’t D．can’t 3．―I can't stop smoking, Doctor. ―For your health, I'm afraid you . A．must B．can C．need D．have to 4．I hope you __________ to my birthday party. A．to come B．can come C．comes D．are come 5．You look quite tired. You'd better ________ a good rest. A．stop to have B．stop having C．to stop to have D．to stop having 6．—I can't stop smoking, doctor. —For your health, I'm afraid you ________. A．must B．can C．may D．need 7．—Hi, Lucy, may I sit here? —No, ________. The seats are for teachers and parents. A．you needn't B．you aren't C．you mustn't D．you don't 8．You __ drive your car so fast. It's very dangerous. A．wouldn't B．shouldn't C．couldn't D．mightn't 9．—Doesn’t Frank like staying at home and looking after his little sister? —_______, but he ________ because both of his parents work. A．Yes; has to B．No; has to C．Yes; doesn’t have to D．No; doesn’t have to 10．—Must I finish my homework this evening? —No,you ________.You have a three﹣day holiday. A．won't B．mustn't C．needn't 11．It is 11:00 p.m now. Peter hasn't come back yet. His mother ______ be very mad at him. A．may B．can C．must D．need 12．—Must we finish the work right now? —No, you ________. You can do it tomorrow. A．needn’t B．shouldn’t C．mustn’t D．can’t 13．It’s raining all day, so I ________ st ay at home. A．can’t B．has to C．have to 14．—I feel tired. —You ________ go to bed so late.
一、选择题 1．—Must I go out to have dinner with you, Mum? —No, you , my dear. You’re free to make your own decision. A．shouldn’t B．mustn’t C．needn’t D．can’t 2．—Must I finish the work today, Mum? —No, you ________.You can finish it tomorrow. A．mustn't B．can't C．shouldn't D．needn't 3．I hope you __________ to my birthday party. A．to come B．can come C．comes D．are come 4．A: Is Jim coming by train? B: I’m not sure. He _______ drive his car. A．must B．may C．need D．should 5．From March 23rd, 2013, anyone under the age of 14 ________ go into Disneyland alone. A．couldn’t B．mustn’t C．needn’t D．mightn’t 6．—Hi, Lucy, may I sit here? —No, ________. The seats are for teachers and parents. A．you needn't B．you aren't C．you mustn't D．you don't 7．— Mom, I got a big box from express(快递). What is it? —I’m not sure. It ________be a present from your grandmother. A．should B．might C．must D．will 8．You should________ the teacher________being late for school. A．apology to, about B．apologize to, for C．apologies to, for D．apologize to, on 9．I see the blackboard. I need to have my glasses. A．can B．can’t C．must D．mustn’t 10．— I wonder if these are Jim's glasses. —They _____his. He doesn't wear glasses. A．might be B．could be C．can't be 11．One ______ easily lose his way when he visits or comes to a new place. A．may B．must C．need D．should 12．I’m sorry, children over 1.4 meters________pay the full price for the show. A．may B．must C．can D．ought to 13．---I heard they went skating in the mountains last winter. ---It ______ true because there was little snow there. A．may not be B．won’t be C．couldn’t be D．will be 14．— Will Jim come to Yangzhou for a holiday? — He ________come, it depends on how much homework he will have. A．may B．should C．must D．need
情态动词的基本用法归纳 情态动词有can (could), may (might), must, have to, shall (should, will (would), dare (dared), need (needed), 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。 一、can, could 1) 表示能力（体力、知识、技能）。 Can you lift this heavy box?（体力） Mary can speak three languages.（知识） Can you skate?（技能） 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. ( No, I’m afraid not. ) 3) 表示客观可能性（客观原因形成的能力）。 T hey’ve changed the timetable, so we can go by bus instead. This hall can hold 500 people at least. 4) 表示推测（惊讶、怀疑、不相信的态度），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. (No, you can’t / mustn’t. ) 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（不用于疑问句）。 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.