当前位置：文档之家 › 情态动词表推测的讲解及练习题

情态动词表推测的讲解及练习题

  • 格式：doc
  • 大小：35.00 KB
  • 文档页数：7

;表推测时，英语中只使用must,may,might,may not和can't。

这五个表达的语气依次递减：must:一定（语气肯定）may：也许（不很肯定）might：或许（比may语气更弱）may not：也许不（表否定）can't：一定不（must的反义）推测现在的事情用must,may,might,may not和can't+do或bemust be at home now.The boy may play now.推测过去的事情用must,may,might,may not和can't+have donemight have been ill yesterday.He must have hold the party.情态动词must, can, could, may, might表推测的用法情态动词中的must, can, could, may, might都表推测。

其中must的可能性最大，can / could次之，may / might最小。

具体用法如下：的用法（1）表示推测“可能性”时，意思是“一定、准是”，语气较肯定，较有把握。

He must be American. = It is certain that he is American. 他准是个美国人。

（2）must表推测只能用于肯定句。

如果要表示“一定不、肯定不”的意思时，应用can’t,如询问某种可能时，应用can。

He must know my address. 他肯定知道我的地址。

（一定）He can’t know my address. 他肯定不知道我的地址。

（一定不）—Can he know my address 他知道我的地址吗（询问可能性）（3）must表示推测时，可以推测现在/正在发生的动作/过去发生的动作。

He must have a car now. （现在）他一定有辆小汽车。

He must be doing his exercises in the classroom.（正在进行）他一定在教室里做练习。

He must have finished the work.（过去发生）他一定已完成了工作。

注：must表示推测时很少用于将来的情况。

一般不用He must come tomorrow.可用It`s certain / I’m s ure that he will come tomorrow.（4）在反意疑问句中，当附属部分含有表示推测意义的must时，疑问部分的助动词应与must后面的动词在非推测情况下的用法保持一致。

He must be a worker, isn’t he （现在）他准是个工人，是吗；It must have rained last night, didn’t it （过去）昨晚一定下雨了，是不是You must have learned English for many years, haven’t you （完成时）你一定学了好多年英语，是吗/ could的用法（1）can表示推测“可能性”时，往往用于否定句或疑问句。

Can’t“一定不”，语气很肯定。

can在疑问句中意思是“会、可能”。

用于肯定句时，表示理论上的，潜在的可能性（有倾向，实际上未必会发生或者不涉及实际是否发生）往往与sometimes 或者 someone 有关。

Accidents can happen.He can’t be at home. = It is impossible that he is at home. 他一定不在家。

（2）can /can’t后可接进行时/完成时，表示对现在发生的动作或过去发生的动作进行推测。

They can’t be reading in the library. 他们一定不在图书馆读书。

|He can’t have gone to Shanghai for I saw him a minute ago.他不可能去了上海，我刚才还看见他。

It’s so late. Where can she have gone 天晚了，她可能去哪儿了呢（3）在反意疑问句中，当陈述部分含有表示推测意义的can’t时，疑问部分的助动词应与can’t后面的动词在非推测情况下的用法保持一致.He can’t be a teacher, is he 他不是教师，是吗She can’t have finished her homework, has she 她一定没有完成家庭作业，是不是could可用于表示某事有可能发生表示可能性不大的推测。

意思相当于may/mightDon’t eat it. It could be poisonous. 不要吃它，可能有毒。

<The plane could be delayed by fog. 飞机可能会因为雾晚点。

（5）could还可以用于表示客气、委婉、礼貌的请求语气。

Excuse me, could you tell me the way to the bus stationCould you help me（6）couldn’t表示否定推测，表示某事不可能真实，或由于特定事实或环境某事肯定不会发生。

It couldn’t possibly be poison. 这不可能是毒药。

表示对过去发生的事推测，常常和have done 连用He was not at home last night . He could/ might have gone to movies.…I didn't see her at the meeting yesterday; she couldn't have spoken at the meeting.3. may和might的用法（1）may, might表示推测“可能性”时，意思是“可能”、“也许”，语气没有 must肯定。

He may / might be American. = It is possible that he is American.他可能是个美国人。

注：might不表示过去时态，只是语气上比may更委婉，表示的可能性更小。

（2）may, might表推测时，可以用于否定句，意思是“可能不、也许不”，但不用于疑问句。

He may / might not be at home. 他也许不在家。

@（3）may, might可以推测现在正在发生的动作或过去发生的动作。

He may / might be sleeping now. （现在）他可能正在睡觉。

The boy may / might not be watching TV at home. （现在）这个男孩可能没在家看电视These students may / might have seen the film before.（过去）这些学生以前可能看过这部电影。

（4）may, might还可以推测将来的情况。

I think we should take raincoat with us, it may rain.#我想我们应该带上雨衣，可能要下雨了。

She might not come this afternoon. 她今天下午可能不来一、单项选择1 John___ come to see us tonight, but he isn't very sure yet.A. mayB. needC. can’tD. must2 John isn’t in the classroom. He play soccer on the playground with Bob.A. canB. mustC. shouldD. can’t3 That _______not be her husband . She is still single.《A. may C. could D. might4 You___ go and see a doctor at once because you got a fever.A. canB. mustC. dareD. would5 -Can you speak Japanese -No, I____.A. mustn'tB. can'tC. needn'tD. may not6 -He___ be in the classroom, I think.-No, he ___ be in the classroom. I saw him go home a minute ago. can; may not B. must; may not C. may; can't D. may; mustn't-7 -Is Lena swimming in the pool-No, she swim. She is terrified of water.A. may notB. must notC. can'tD. needn't8 He isn't at school. I think he ___ be ill.A. canB. shallC. mustD. might9 -What do you think “upset” mean s- I’m not sure. It mean “sad”.may B. must C. can D. should-10 The children___ play football on the road.can't B. canC. mustn'tD. mustroad is wet . It ______last night.A must rainB must have rainedC could have rainedD can have rained12 .He ______you more help , even though he was busy .A might have givenB might not give`C may not have givenD may give1. Look! The light is out in her room. She ———— to bed already.A. must goB. had to go have gone gone2. We had a wonderful time yesterday. You ———— .Why didn't you comeA. had to come have come have come have come3. ─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 been4. My sister met him at the Grand Theatre yesterday afternoon, so he ___ your lecture.A. couldn't have attendedB. needn't have attendedC. mustn't have attendedD. shouldn't have attended【5. 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 leave6. Oh, I’m not feeling we ll in the stomach,I_____ so much fried chicken just now.A. shouldn’t cutB. mustn’t have eatenC. shouldn’t have eatenD. mustn’t eat7. _____ at 8:30 for the meeting, but he didn’t’ show up.A. should have arrivedB. should arrive\C. should have had arrivedD. should be arriving8. You ______ be tired - you've only been working for an hour.A. must notB. won' tC. can' tD. may not9. - Isn' t that Ann's husband over there- No, it _______ be him -I'm sure he doesn't wear glasses.A. can'tB. must notC. won'tD. may not10. There ____ be any difficulty about passing the road test since you have practised a lot in the driving school.A . mustn’t B. shan’t C. shouldn’t’t…11. I was on the highway when this car went past followed by a police car. They ______ at lease 150 km an hour.A. should have been doingB. must have been doingC. could have doneD. would have done12. He _____ have compl eted his work; otherwise, he wouldn’t be enjoying himself by the seaside.A. shouldB. mustC. wouldn’tD. can’t13. ---- The woman biologist stayed in Africa studying wild animals for13 years before she Oh, dear! She _______ a lot of difficulties!A. may go throughB. might go throughC. ought to have gone throughD. must have gone through{14. This cake is very sweet. You __________ a lot of sugar in it. A．should put B．could have put C．might put D．must have put15. —Catherine, I have cleaned the room for you.—Thanks. You it. I could manage it myself.A．needn’t do B．needn’t have done C．mustn’t do D．shouldn’t have done16.—Tom is never late for work. Why is he absent today—Something ________ to him.A．must happen B．should have happened&C．could have happened D．must have happened情态动词+have done 结构1．---You didn’t wait for Mr. Smith last night, did you---No, but we ______. He didn’t return home at all.A. couldn’t have waitedB. needn’t haveC. didn’t need toD. should wait2．Harry ______ have won the Physics competition easily yesterday, buthe gave up.A. couldB. mightC. shouldD. must]3．---May I speak to your manager Mr. Smith at six o’clock tonight ”---“I’m sorry, Mr. Smith to a conference before then.”A. will have goneB. had goneC. would have goneD. has gone4．---Tom took away our teacher’s cell phone without being permitted. --- Really I can’t imagine that he _______ have done such a thing. A. must B. may C. can D. should6．The weather turned out to be fine yesterday. I_________ the trouble to carry my umbrella with me .A. should have takenB. could have taken\C. needn't have takenD. mustn't have taken7．He paid for a seat, when he ______ have entered free.A. couldB. wouldC. mustD. need8．I didn’t see her in the meeting room this morning. She at the meeting .A. mustn’t have spokenB. mightn’t have spokenC. can’t have spokenD. shouldn’t have spoken9．--- Hi, is that Peter Brown"---Sorry. You ______ the wrong number .A. must dialB. must have dialedC. should dialD. should have dialed 10．I was on the highway when this car went past followed by a police car . They ______ at least 150 kilometers an hour .A. should have been doingB. must have been doingC. could have doneD. would have done1. He is not poor. You ____ have lent him the money.A. can’tB. needn’tC. couldn’tD. mustn’t2. There was plenty of time. You ___ have hurried.A. won’tB. mustn’tC. needn’tD. couldn’tpaid for a seat, when he ___ have entered free. (05 山东)A. couldB. wouldC. mustD. need--- On, it ___ my brother, Peter.A. must beB. must have beenC. can have beenD. might be4. I ____ here in time, but I met an old friend of mine. I stopped and talked with him for some time.A. shouldn’t have comeB. must have comeC. needn’t have comeD. could have come5. They ____ have finished the work yesterday, but it was raining hard.A. mustB. couldC. shouldD. might___ to him. ( 05江西 22题 )A. must happenB. should have happenedC. could have happenedD. must have happened。

合集下载

初一英语情态动词推测用法练习题30题(答案解析)

初一英语情态动词推测用法练习题30题(答案解析)

初一英语情态动词推测用法练习题30题(答案解析)1. Look at that boy. He ____ be Tom. He often wears the same clothes as Tom.A. canB. couldC. mustD. may答案：C。

解析：must用于肯定句中表示非常肯定的推测，根据句子“He often wears the same clothes as Tom.”可知说话者有足够的理由断定那个男孩就是Tom，所以这里用must。

can表示能力，一般不用于表推测；could是can的过去式，也可用于表推测，但可能性较弱；may表示可能，其肯定程度不如must。

2. My mother is not at home. She ____ be at the supermarket. She always goes shopping at this time.A. shouldB. mustC. canD. would答案：B。

解析：must表示推测时，有较大的可能性。

句子中提到“She always goes shopping at this time.”这一经常发生的情况，所以有较大把握推测她在超市，所以用must。

should表示应该；can表示能力或客观可能性；would是will的过去式，通常用于虚拟语气或表示过去的习惯，这里均不符合语境。

3. There are a lot of clouds in the sky. It ____ rain soon.A. canB. mayC. mustD. should答案：B。

解析：may表示可能性，天空中有很多云只是有下雨的可能性，但不是肯定会下雨。

can表示能力或客观可能性时，通常不用于这种表天气变化的推测；must表示肯定的推测，这里根据云的情况不能肯定一定会下雨；should表示应该，不符合此处语境。

4. The book on the desk ____ be Lily's. Her name is on it.A. canB. mayC. mustD. could答案：C。

中考英语情态动词推测基础练习题40题(带答案)

中考英语情态动词推测基础练习题40题(带答案)

中考英语情态动词推测基础练习题40题(带答案)1.There is a loud noise coming from the next room. It must be Tom. He is the only one there.A.must beB.can't beC.could beD.might be答案解析：A。

“must be”表示肯定的推测，根据题干中“There is a loud noise coming from the next room. He is the only one there.”可知，有很大的噪音从隔壁房间传来，并且他是那里唯一的一个人，所以可以肯定是汤姆。

“can't be”表示否定的推测，不符合题意；“could be”和“might be”表示可能性较小的推测，也不符合题意。

2.The book on the table isn't mine. It can't be mine.A.must beB.can't beC.could beD.might be答案解析：B。

“can't be”表示否定的推测，根据题干“The book on the table isn't mine.”可知，桌子上的书不是我的，所以用“can't be”。

“must be”表示肯定的推测，不符合题意；“could be”和“might be”表示可能性较小的推测，也不符合题意。

3.Look at that girl. She is singing so beautifully. She could be aprofessional singer.A.must beB.can't beC.could beD.might be答案解析：C。

“could be”表示可能性较大的推测，根据题干“Look at that girl. She is singing so beautifully.”可知，那个女孩唱歌很好听，有可能是专业歌手。

情态动词表推测用法总结及专项练习

情态动词表推测用法总结及专项练习

情态动词表推测用法总结及专项练习第一篇：情态动词表推测用法总结及专项练习情态动词表推测用法总结及专项练习1.can / could用于表推测的用法(1)从使用句型上看，can 通常只用于否定句或疑问句，一般不用于肯定句，而could 可用于肯定句、否定句和疑问句。

两者没有时间上的差别，只是could 比 can 更委婉，更不确定。

如：It can’t [couldn’t] be true.那不可能是真的。

What can [could] they be doing? 他们会在干什么呢? We could go there this summer.今年夏天我们可能要去那儿。

注：can 有时也用于肯定句中表示推测，主要用于表示理论上的可能性(即从理论上看是可能的，但实际未必会发生)，或表示“有时”之意。

如：Even experienced teachers can make mistakes.即使是有经验的教师也可能出错。

She can be very unpleasant.她有时很令人讨厌。

(2)从时间关系看，对现在或将来情况作推测，后接动词原形；对正在进行的情况作推测，后接 be doing 结构；对过去情况作推测，后接动词完成式。

如：He could have gone home.他可能已经回家了。

He can’t [couldn’t] have understood.他不可能理解了。

Why does he know this? Can [Could] someone have told him about it? 他怎么知道? 会是哪个人告诉他了吗?(3)“could+完成式”除表示对过去的推测外，还有以下重要用法：① 表示过去没有实现的可能性，常译为“本来可以”。

如： I could have lent you the money．Why didn’t you ask me? 我本来可以借这笔钱给你的。

初一英语情态动词推测用法练习题40题含答案解析

初一英语情态动词推测用法练习题40题含答案解析

初一英语情态动词推测用法练习题40题含答案解析1.There must be a lot of students in the library. It's very quiet.must becan't bemight becould be答案解析：must be。

“must be”表示肯定的推测，意思是“一定是”。

图书馆很安静，通常情况下安静的地方可能有很多学生在学习，所以用“must be”比较合理。

“can't be”表示否定的推测，不符合题意。

“might be”和“could be”表示可能性较小的推测，没有“must be”肯定。

2.The boy in the classroom must be Tom. He is the only one who wears a blue shirt today.must becan't bemight becould be答案解析：must be。

题干中明确指出男孩是唯一穿蓝色衬衫的人，所以肯定是Tom，用“must be”。

“can't be”否定推测不符合。

“might be”和“could be”可能性小，不如“must be”确定。

3.There must be some books on the desk. I saw the teacher put them there.must becan't bemight becould be答案解析：must be。

看到老师把书放在桌子上了，所以肯定有书在桌子上，用“must be”。

“can't be”不对。

“might be”和“could be”表示不确定，这里已经确定看到老师放书了。

4.The girl who is singing must be Lily. She has a beautiful voice.must becan't bemight becould be答案解析：must be。