情态动词表推测专项练习题

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。

初一英语情态动词推测用法练习题30题(带答案)1. The door is open. Someone ____ be in the room.A.mustB.canC.mayD.could答案解析：C。

“must”表示肯定的推测，语气非常强；“can”表示理论上的可能性；“may”表示有可能，语气较弱；“could”表示过去的可能性或委婉语气。

在这个场景中，门开着只能说明可能有人在房间，所以选择“may”。

2. There is a lot of noise coming from the classroom. The students ____ be having a discussion.A.mustB.canC.mayD.could答案解析：A。

“must”在这里表示比较肯定的推测，因为有很多噪音从教室传来，很有可能是学生们在进行讨论。

“can”和“could”表示可能性较小，“may”语气较弱。

3. Tom is not in the classroom. He ____ be in the library.A.mustB.canD.could答案解析：C。

“may”表示有可能，因为汤姆不在教室，只是有可能在图书馆，不能确定，所以选择“may”。

“must”语气太强，“can”和“could”也不太符合这个场景。

4. The light in the office is on. Someone ____ be working there.A.mustB.canC.mayD.could答案解析：C。

灯亮着只能说明有可能有人在办公室工作，“may”语气较弱，符合这个场景。

“must”太肯定，“can”和“could”也不太恰当。

5. There are some footprints on the ground. Someone ____ have walked here.A.mustB.canC.mayD.could答案解析：C。

高二英语情态动词推测用法练习题30题1.He is always smiling. He must be in a good mood.A.can beB.might beC.should beD.could be答案：must be。

“must be”表示肯定的推测，意为“一定是”。

“can be”表示理论上的可能性；“might be”表示可能性较小的推测；“should be”表示应该是；“could be”表示可能性较大，但比“must be”可能性小。

在这个句子中，“He is always smiling.”说明他一直笑，所以推测他一定心情好，用“must be”最恰当。

2.She is not in the classroom. She may be in the library.A.must beB.could beC.should beD.can't be答案：may be。

“may be”表示有可能是。

“must be”表示肯定的推测；“could be”表示可能性较大；“should be”表示应该是；“can't be”表示否定的推测。

这个句子中“She is not in the classroom.”只是说她不在教室，不确定在哪里，所以用“may be”表示可能在图书馆。

3.The boy looks very tired. He could be staying up late.A.must beB.might beC.should beD.can't be答案：could be。

“could be”表示可能性较大的推测。

“must be”表示肯定的推测；“might be”表示可能性较小；“should be”表示应该是；“can't be”表示否定的推测。

这里“The boy looks very tired.”只是看起来累，所以用“could be”表示可能熬夜了。

情态动词表推测专项练习题A。

should have arrivedB。

must have arrivedC。

might have arrivedD。

could have arrived1.Look。

The light is out in her room。

She must have gone to bed already.2.We had a wonderful time yesterday。

You should have come。

Why didn't you come?3."There were already five people in the car but they managed to take me as well." It XXX.4.My sister met him at the Grand XXX。

XXX.5.I was really us about you。

You shouldn't have left home without a word.6."Oh。

I’m not XXX。

I mustn’t have eaten so much fried chicken just now."7.Mr。

White should have arrived at 8:30 for the meeting。

but he didn't show up。

1.It seems that the person has already gone to bed。

so the correct answer is "must have gone".2.The speaker had a great time and expected the other person to come as well。

so the correct answer is "should have come".3.XXX because there were too many people in the car。

中考英语情态动词推测基础运用练习题30题(答案解析)1. Look at the man over there. He ____ be a teacher. He is so patient with those children.A. mustB. mayC. can'tD. might答案解析：A。

must表示非常肯定的推测，根据句子中“He is so patient with those children”可以看出他对孩子们很有耐心，所以非常有可能是一名老师，这里用must很合适。

may和might表示可能性比较小的推测，can't表示否定推测，不符合语境。

2. The light in the room is on. There ____ someone in it.A. mustB. canC. mayD. should答案解析：A。

房间灯亮着，根据这个情况非常肯定房间里有人，must用于肯定句中表示很有把握的推测。

can表示能力或请求许可等，与推测关系不大；may表示可能，把握性没有must强；should表示应该，不用于推测。

3. Listen! The music coming from the hall. It ____ be a concert.A. mustB. mightC. can'tD. may答案解析：A。

听，有音乐从大厅传来，根据这个情况可以很肯定地推测出这里正在举办一场音乐会，must表示肯定的推测。

might 和may表示可能性较小的推测，can't表示否定推测，不符合语境。

4. She has a very expensive car. She ____ be very rich.A. mustB. canC. mayD. might答案解析：A。

她有一辆非常昂贵的汽车，从这一点可以很有把握地推测出她很富有，must用于这种比较肯定的推测。

中考英语情态动词推测基础运用练习题30题含答案解析1.There must be someone in the classroom. The light is on.A.canB.mustC.mightD.could答案解析：B。

“must”在这里表示肯定的推测，语气最强，因为灯亮着，所以很肯定教室里有人。

“might”和“could”表示可能性较小的推测，“can”一般表示能力或可能性，在这里不太符合语境。

2.She can't be at home. She has gone to school.A.mustB.can'tC.mayD.could答案解析：B。

根据后一句“她去学校了”可知她肯定不在家，“can't”表示否定的推测，语气较强。

“must”表示肯定推测，这里不合适；“may”和“could”表示可能性较小的推测，也不符合。

3.The boy in blue look very tired. He must have stayed up late last night.A.mustB.can'tC.may答案解析：A。

“must”在这里表示肯定的推测，语气较强，因为男孩看起来很累，所以推测他昨晚肯定熬夜了。

“can't”表示否定推测，不符合；“may”和“could”可能性较小，没有“must”符合语境。

4.There may be some books on the desk.A.mustB.mayC.can'tD.could答案解析：B。

“may”表示可能性的推测，语气较弱。

“must”表示肯定推测，这里不确定书一定在桌子上；“can't”表示否定推测；“could”也表示可能性较小，但没有“may”正式。

5.He might be at the library.A.mustB.can'tC.mayD.might答案解析：D。

高考英语情态动词推测运用练习题20题1.He is always reading books. He must be very interested in literature.A.mustB.mayC.mightD.could答案：A。

“must”在这里表示肯定的推测，语气最强。

他总是在读书，所以一定对文学很感兴趣。

“may”“might”“could”虽然也可以表示推测，但语气较弱，不符合这里的语境。

2.She has a lot of knowledge about art. She could be an art major.A.mustB.mayC.mightD.could答案：D。

“could”在这里表示比较委婉的推测。

她有很多关于艺术的知识，有可能是艺术专业的。

“must”语气太强硬，“may”“might”也可以表示推测，但不如“could”委婉。

3.The man is wearing a suit and tie. He might be going to a formal event.A.mustB.mayC.might答案：C。

“might”在这里表示比较弱的推测。

这个男人穿着西装打着领带，可能是要去一个正式的活动。

“must”语气太肯定，“may”“could”也可以表示推测，但“might”更符合语境。

4.The room is very clean. She may have cleaned it.A.mustB.mayC.mightD.could答案：B。

“may”在这里表示有可能的推测。

房间很干净，她有可能打扫了。

“must”语气太强硬，“might”“could”也可以表示推测，但“may”更符合语境。

5.There are many books on the desk. He could be a student.A.mustB.mayC.mightD.could答案：D。

高二英语情态动词表推测填空练习题50题(答案解析)1.He _____ be very tired after such a long journey.A.mustB.canC.shouldD.need答案解析：A。

must 表示肯定的推测，意为“一定”，在经历了如此漫长的旅程后，他一定非常疲惫。

can 表示可能性，通常用于否定句和疑问句；should 表示应该；need 表示需要，通常用于否定句和疑问句。

2.She _____ know the answer. She is always so smart.A.mustB.canC.shouldD.need答案解析：A。

must 表示肯定的推测，她总是那么聪明，所以她一定知道答案。

can 表示可能性；should 表示应该；need 表示需要。

3.They _____ be at home. The lights are on.A.mustB.canC.shouldD.need答案解析：A。

must 表示肯定的推测，灯亮着，所以他们一定在家。

can 表示可能性；should 表示应该；need 表示需要。

4.The book _____ belong to him. His name is on it.A.mustB.canC.shouldD.need答案解析：A。

must 表示肯定的推测，书上有他的名字，所以这本书一定属于他。

can 表示可能性；should 表示应该；need 表示需要。

5.He _____ be ill. He looks so pale.A.mustB.canC.shouldD.need答案解析：A。

must 表示肯定的推测，他脸色苍白，所以他一定生病了。

can 表示可能性；should 表示应该；need 表示需要。

6.The weather _____ be nice tomorrow. The forecast says so.A.mustB.canC.shouldD.need答案解析：A。

初三英语情态动词表推测的程度单选题50题1. Tom is always very hardworking. He ______ pass the coming exam.A.mustB.mightC.couldD.should答案：A。

must 表示非常肯定的推测，因为前文提到Tom 一直很努力，所以可以非常肯定他会通过即将到来的考试。

might 和could 表示可能性较小的推测，should 表示应该，在此处没有must 肯定程度高。

2. There are only a few days left before the competition. She ______ be very nervous.A.mustB.mightC.couldD.should答案：A。

只有几天就要比赛了，所以可以比较肯定地推测她一定很紧张。

must 表示非常肯定的推测，might 和could 可能性较小，should 表示应该，在此处不如must 表示的肯定程度高。

3. The sky is very clear. It ______ be a nice day tomorrow.A.mustB.mightC.couldD.should答案：A。

天空很晴朗，所以可以很肯定地推测明天会是个好天气。

must 表示非常肯定的推测，might 和could 表示可能性较小，should 表示应该，在此处肯定程度不如must。

4. He has been studying very hard recently. He ______ get good grades in the final exam.A.mustB.mightC.couldD.should答案：A。

他最近一直很努力学习，所以可以很肯定地推测他在期末考试中会取得好成绩。

must 表示非常肯定的推测，might 和could 表示可能性较小，should 表示应该，在此处肯定程度不如must。

初三英语情态动词表推测的程度单选题50题1.John might be in the library. He said he had a lot of homework to do.A.must beB.can't beC.might beD.should be答案：C。

might be 表示可能性较低，“可能是”；must be 表示肯定推测“一定是”；can't be 表示否定推测“不可能是”；should be 表示“应该是”。

题干中只是说John 可能在图书馆，所以选择might be。

2.The book on the table could be Tom's. He likes reading.A.must beB.can't beC.could beD.should be答案：C。

could be 表示可能性较低，“可能是”；must be 表示肯定推测“一定是”；can't be 表示否定推测“不可能是”；should be 表示“应该是”。

题干中说桌上的书可能是Tom 的，所以选择could be。

3.She may come to the party later.A.must comeB.can't comeC.may comeD.should come答案：C。

may come 表示可能性较低，“可能来”；must come 表示肯定推测“一定来”；can't come 表示否定推测“不可能来”；should come 表示“应该来”。

题干中说她可能晚点来派对，所以选择may come。

4.There might be some milk in the fridge.A.must beB.can't beC.might beD.should be答案：C。

might be 表示可能性较低，“可能是”；must be 表示肯定推测“一定是”；can't be 表示否定推测“不可能是”；should be 表示“应该是”。

高二英语情态动词表推测填空练习题40题1. She ____ be at home. I saw her enter the house just now.must答案：must。

“must”表示肯定的推测，意为“一定”。

因为看到她刚刚进入房子，所以可以肯定她在家。

2. The light is on. He ____ be in the room.must答案：must。

灯亮着，所以很有可能他在房间里，用“must”表示肯定推测。

3. There is a lot of noise coming from that room. They ____ be havinga party.must答案：must。

有很多噪音从那个房间传来，所以推测他们一定在开派对。

4. She is smiling. She ____ be very happy.must答案：must。

她在微笑，所以肯定推测她很开心。

5. The book is on his desk. He ____ have read it.must答案：must。

书在他的桌子上，所以推测他一定读过这本书。

6. He knows a lot about this subject. He ____ have studied it carefully.must答案：must。

他对这个科目了解很多，所以肯定推测他一定认真学习过。

7. She is always on time. She ____ be late today.can't答案：can't。

她总是很准时，所以否定推测她今天不可能迟到。

8. The weather is so nice. They ____ be having a picnic.must答案：must。

天气很好，所以推测他们一定在野餐。

9. He is a good student. He ____ have done his homework.must答案：must。

中考英语情态动词表推测单选题50题1. Look at the dark clouds in the sky. It ______ rain soon.A. mustB. canC. mayD. should答案：C。

解析：本题考查情态动词表推测在肯定句中的用法。

must表示非常肯定的推测，意为“一定”；can表示推测时通常用于否定句和疑问句；may表示可能性较小的推测，意为“可能”；should表示按道理应该。

根据句中“dark clouds”可知有下雨的可能性，但不是非常肯定，所以用may。

2. She is so excited. She ______ have got some good news.A. canB. mustC. mightD. would答案：B。

解析：这里考查情态动词表推测。

must表示有较大把握的推测，从“excited”可以推断她很可能是得到了好消息，有比较大的可能性，所以用must。

can表推测不用于肯定句这种情况；might表示可能性较弱；would不表推测。

3. The book on the table ______ belong to Tom. His name is on it.A. canC. mustD. should答案：C。

解析：这题是关于情态动词表推测在肯定句中的运用。

must用于表示肯定性很强的推测，因为书上有Tom的名字，所以几乎可以肯定这本书是Tom的，而may表示可能性相对较小的推测；can表推测多用于否定句和疑问句；should表示应该，不表这种推测。

4. He ______ be at home now. I saw him go into his house just a minute ago.A. canB. mustC. mayD. could答案：B。

解析：本题测试情态动词肯定句中的推测用法。

must 用于推测时表示很有把握的肯定推测，根据“saw him go into his house just a minute ago”可知他现在在家是非常有可能的，有很强的确定性。

高二英语情态动词推测用法单选题40题(带答案)1.She be in the library. I saw her go there just now.A.mustB.can'tC.mightD.should答案：A。

“must”表示肯定的推测，因为看到她刚刚去了图书馆，所以确定她一定在图书馆。

“can't”表示否定的推测，与前面看到她去图书馆矛盾。

“might”表示可能性较小的推测，不如“must”肯定。

“should”表示应该，在这里不符合对现在情况的推测。

2.He be very tired. He has been working for hours.A.mustB.can'tC.mightD.should答案：A。

他工作了几个小时，所以肯定很累，“must”表示肯定的推测。

“can't”表示否定的推测，不符合。

“might”可能性较小，没有“must”肯定。

“should”表示应该，在这里不是对现在情况的推测。

3.The light is on. Someone be in the room.A.mustB.can'tC.mightD.should答案：A。

灯亮着，所以肯定有人在房间里，“must”表示肯定的推测。

“can't”表示否定的推测，与灯亮着矛盾。

“might”可能性较小，不如“must”肯定。

“should”表示应该，不是对现在情况的推测。

4.She be at home. I just called and no one answered.A.mustB.can'tC.mightD.should答案：B。

刚刚打电话没人接，所以肯定不在家，“can't”表示否定的推测。

“must”表示肯定的推测，不符合。

“might”可能性较小，这里根据打电话没人接可以确定不在家。

“should”表示应该，不是对现在情况的推测。

高考英语情态动词推测单选题20题1.She ________ be at home. I just saw her leave.A.can'tB.mustC.mightD.should答案：A。

本题考查情态动词表示推测的用法。

“can't”表示“不可能”，因为后面说刚看到她离开，所以她不可能在家；“must”表示“一定”；“might”表示“可能”；“should”表示“应该”。

2.There is a lot of noise coming from the classroom. The students ________ be having a discussion.A.canB.mustC.mightD.should答案：B。

“must”在这里表示肯定的推测，有很多噪音从教室传来，很有可能是学生们在进行讨论；“can”表示“能够”；“might”可能性比“must”小；“should”表示“应该”。

3.He ________ know the answer. He looks so confident.A.canB.mustC.might答案：B。

从他看起来很自信可以推断他一定知道答案，“must”表示肯定的推测；“can”表示“能够”；“might”表示不太确定的推测；“should”表示“应该”。

4.The book isn't here. She ________ have taken it.A.canB.mustC.mightD.should答案：C。

书不在这儿，她有可能拿走了，“might”表示不太确定的推测；“can”表示“能够”；“must”表示很肯定的推测，不太符合这里的语境；“should”表示“应该”。

5.They ________ be late. The traffic is very heavy.A.canB.mustC.mightD.should答案：C。

高二英语情态动词表推测填空练习题50题含答案解析1. Tom is always on time. He ____ be in the classroom now.A.mustB.canC.mayD.could答案解析：A。

must 表示非常肯定的推测，符合“Tom is always on time”这个前提，所以他现在肯定在教室里。

can 表示可能性，但没有must 肯定；may 表示有可能，推测程度比can 还弱；could 语气更委婉，可能性也比较小。

2. Look at the beautiful painting. It ____ be Mary's. She is good at art.A.mustB.canC.mayD.could答案解析：A。

must 表示很肯定的推测，因为提到“She is good at art”，所以这幅画很可能是她的。

can 表示有能力做某事或有可能性，但没有must 肯定；may 可能性较小；could 语气委婉，可能性也小。

3. The boy is reading an English book. He ____ be preparing for the English exam.A.mustB.canC.mayD.could答案解析：A。

must 表示肯定推测，男孩在看英语书，很有可能是在为英语考试做准备。

can 表示可能性；may 可能性较弱；could 语气委婉，可能性小。

4. There is a lot of noise coming from the classroom. The students ____ be having a discussion.A.mustB.canC.mayD.could答案解析：A。

must 表示肯定推测，有很多噪音从教室传来，很可能学生们在进行讨论。

can 有可能性；may 可能性较弱；could 语气委婉，可能性小。

情态动词表推测专项练习1. Look! The light is out in her room. She ———— to bed already.A. must goB. had to goC.must have goneD.has gone2. We had a wonderful time yesterday. You ———— .Why didn't you come?A. had to comeB.should have comeC.might have comeD.must 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 attended5. 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 well 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. Mr.White _____ at 8:30 for the meeting, but he didn’t’ show up.A. should have arrivedB. should arriveC. 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 D.needn’t11. 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 completed 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 for 13 years before she returned.---- Oh, dear! She _______ a lot of difficulties!A. may go throughB. might go throughC. ought to have gone throughD. must have gone through14. 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 done 16.—Tom is never late for work. Why is he absent today?—Something ________ to him.A．must happen B．should have happenedC．could have happened D．must have happenedThe Uniqueness of Finger-prints（指纹的唯一性）难度：＊＊＊＊词数：266 标准时间：6分钟完成时间：______正确数：______ Every human being has a unique①arrangement of the skin on his fingers and this arrangement is unchangeable. Scientists and experts have proved the uniqueness of finger-prints and discovered that no exactly similar pattern is passed on from parents to children, though nobody knows why this is the case.The ridge structure on a person’s fingers does not change with growth and is not affected by surface injuries. Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one, which bears a reproduction of the original②pattern. It is only when the inner skin is injured that the arrangement will be destroyed. Some criminals make use of this fact to remove their own finger-prints but this is a dangerous and rare step to take.Finger-prints can be made very easily with printer’s ink. They can by recorded easily. With special methods, identification③can be achieved successfully within a short time. Because of the simplicity and economy of this system, finger-prints have often been used as a method of solving criminal case. A suspected man may deny a charge but this may be in vain. His finger-prints can prove who he is even if his appearance has been changed by age or accident.When a suspect leaves finger-prints behind at the scene of a crime, they are difficult to detect with the naked eye. Special techniques are used to “develop” them. Some of the marks found are incomplete but identification is possible if a print of a quarter of an inch square can be obtained. ( ) 1. Scientists and experts have proved that the pattern of a human being’s finger skin ________.A. is similar to his mother’sB. is valuable to himself onlyC. is like that of others with the same type of bloodD. is different from that of all others( ) 2. If your fingers are wounded by knife, fire or other means, the structure of skin will ________.A. be changed partlyB. be replaced by a different oneC. be the same when the wound is recoveredD. become ugly( ) 3. Some criminals remove their own finger-prints by ________.A. using printer’s inkB. injuring the inner skinC. damaging the outer skinD. damaging the colour( ) 4. Finger-prints have often been used as a method of solving criminal case because it ________.A. is complicated but reliableB. is simple and not expensiveC. is expensive but easy to doD. can bring a lot of money。

高二英语情态动词推测用法练习题30题含答案解析1.He must be in the library. He said he would study there.mustmaycouldmight答案解析：must。

“must”表示肯定的推测，语气非常强，通常用于有充分根据的推测。

“may”表示可能，语气较弱。

“could”和“might”也表示可能，语气比“may”更弱。

本题中根据“He said he would study there.”有比较充分的根据推测他一定在图书馆，所以选“must”。

2.She must be very tired. She has been working all day.mustshouldcouldmight答案解析：must。

“must”在这里表示有明显迹象的肯定推测。

“should”表示应该，不是推测。

“could”和“might”语气较弱，不符合“has been working all day”这个强烈的迹象。

所以选“must”。

3.There must be some books on the shelf. I saw them yesterday.mustmaycould答案解析：must。

“must”在本句中表示根据昨天看到书在架子上这个依据做出的肯定推测。

“may”“could”“might”语气较弱，不如“must”肯定。

所以选“must”。

4.He must know the answer. He is the top student in our class.mustshouldcouldmight答案解析：must。

“must”表示因为他是班上的尖子生，所以有理由做出他一定知道答案的肯定推测。

“should”不是推测。

“could”和“might”语气太弱。

所以选“must”。

5.The light is on. Mom must be at home.mustmaycouldmight答案解析：must。

高二英语情态动词推测用法练习题30题(答案解析)1. The man in the corner looks so pale. He ____ be ill.A. canB. mayC. mustD. should答案：C。

解析：must用于表示对现在情况很有把握的推测，意为“一定”。

句中说角落里的男人看起来很苍白，所以很有把握推测他一定是病了。

can表示推测时通常用于否定句和疑问句，不用于肯定句表示对现在情况的推测，所以A选项错误。

may表示推测时意为“也许，可能”，把握性没有must大，此处根据语境是比较肯定的推测，所以B选项不合适。

should表示“应该”，不用于表示推测现在的情况，D选项也不正确。

2. Look at that girl! She is wearing a heavy coat on such a hot day. She ____ be crazy.A. mightB. mustn'tC. can'tD. could答案：A。

解析：might表示对现在情况不太肯定的推测，意为“可能，也许”。

句中女孩在大热天穿厚外套，说话者不太肯定地推测她可能是疯了。

mustn't表示“禁止”，不是推测用法，B选项错误。

can't表示对现在情况的否定推测时，意为“不可能”，这里说话者不是很肯定地否定，C选项不符合语境。

could可以表示推测，但在这里没有might合适，D选项也不正确。

3. There is a lot of noise coming from the classroom. The students ____ be having a party.A. wouldB. shouldC. couldD. must答案：C。

解析：could在这里表示对现在情况的推测，意为“可能”。

有很多噪音从教室传来，学生们可能正在开派对。

would表示过去将来或者虚拟语气，不用于对现在情况的推测，A选项错误。

高考英语情态动词推测运用单选题20题1. Tom is always on time. He ______ be late for the meeting.A.mustn'tB.can'tC.shouldn'tD.needn't答案：B。

本题考查情态动词表示推测的用法。

“mustn't”表示禁止；“can't”表示不可能；“shouldn't”表示不应该；“needn't”表示不必。

根据语境，Tom 总是很准时，所以他不可能迟到。

2. The light in his room is on. He ______ be at home.A.mustB.canC.mayD.might答案：A。

“must”表示肯定的推测，语气最强；“can”表示可能，但语气没有“must”强；“may”和“might”表示可能性较小。

房间灯亮着，所以他肯定在家。

3. She studies very hard. She ______ pass the exam.A.mustB.shouldC.ought toD.had better答案：A。

“must”表示肯定的推测，根据她学习很努力这个前提，可以推测她肯定能通过考试。

“should”表示应该；“ought to”表示应该；“had better”表示最好。

4. The ground is wet. It ______ have rained last night.A.mustB.shouldC.ought toD.can答案：A。

地面湿了，说明昨晚肯定下雨了。

“must”表示肯定的推测，语气最强。

“should”“ought to”表示应该；“can”表示可能，但语气较弱。

5. There is a lot of noise coming from their room. They ______ be having a party.A.mustB.canC.mayD.might答案：A。

情态动词表推测练习试题附答案1. —Would you like to ride a horse with us in the countryside?—Of course. It _____ be fun.A．canB．mayC．must(正确答案)D．need2. —You _____ be excited that you are going back to your hometown soon. —Yes, I can't wait any longer.A．shallB．canC．needD．must(正确答案)3. —Mum, I'm going climbing. Must I clean the room now? —No, you _____. You can do it this evening.A．can'tB．mustn'tC．needn't(正确答案)4. —That man must be Sarah's husband.—No, he____ be her husband. She is still single. A．can't(正确答案)B．mustn'tC．may notD．ought to5. —Isn't that Ann's husband over there?—No, it _____ be him—I'm sure he doesn't wear glasses.A．can't(正确答案)B．must notC．won'tD．may not6. —Is Mr. Hu in the reading room?—No, he _____ be there. He has gone to Tianjin. A．mustn'tB．needn'tC．won'tD．can't(正确答案)7. —Whose T-shirt is this?—It _____ be John's. It's much too small for him.A．canB．mayC．can't(正确答案)D．must8. —Where is our English teacher? Has she left?—She __ be away. Her keys are still here.A．can't(正确答案)B．won'tC．mustD．might9. —Look at the boy running on the ground. Is it Davis? —It _____ be him. I saw him go to the teacher's office just now.A．mustn'tB．can't(正确答案)C．couldD．might10. —Is there a movie on in the cinema tonight?—There _____ be. I will phone the cinema and find it out.A．might(正确答案)B．shouldC．canD．could11. —Where is Mrs Zhao?—I'm not sure. She _____ be in the library. A．mustB．canC．might(正确答案)D．should12. When winter comes, _____ spring be far behind?A．shouldB．needC．mustD．can(正确答案)13. Peter _____ come with us tonight, but he isn't very sure.A．mustB．may(正确答案)C．canD．will14. David, you mustn't play with the valuable bottle, you _____ break it. A．can'tB．may(正确答案)D．shouldn't15. I thought you _____ like something to read. So I have brought you some books. A．oughtB．might(正确答案)C．couldD．must16. Class 3 won the football match! _____ it be true?A．MayB．MustC．WillD．Can(正确答案)17. This book _____ Lucy's. Look! Her name is on the book cover.A．must be(正确答案)B．may beC．can't beD．mustn't be18. You have worked for a long time. You _____ be very tired.A．must(正确答案)C．couldD．mustn't19. The light in his room is still on, so he _____ be at home.A．can'tB．shouldC．must(正确答案)D．need20. You _____ be hungry after a long walk.A．shouldB．must(正确答案)C．needD．couldn't21. — Excuse me. Will you please tell me the way to the railway station? — Oh, sorry, but I don’t know. You ______ go and ask that policeman.A. may(正确答案)B. mustC. would22. John ______ come to see us tonight, but he isn’t very sure yet.A. may(正确答案)B. canC. has toD. must23. This book ______ Lucy’s. Look! Her name is on the book’s cover.A. can’t beB. may beC. mustn’t beD. must be(正确答案)24. ______ I finish the work today? — No, you ______.A. Must, can’tB. Must, needn’t(正确答案)C. May, needn’tD. Can, mustn’t25. ______ we ask you some questions? — Sure, go ahead!A. WillB. Shall(正确答案)C. Must26. You must come back every month. — Yes, I ______.A. mustB. shouldC. will(正确答案)D. can27. Where is Tom? — He hasn’t come to school today. I think he ______ be ill.A. has toB. had betterC. canD. must(正确答案)28. What’s the time now? —It’s still early. You ______ worry about the time.A. may notB. don’t have to(正确答案)C. can’tD. don’t need29. ______ I visit Lucy on Sunday, Mum? — Yes, you ______.A. Must, canB. May, may(正确答案)C. Need, needD. May, need30. Computers ______ do many things for us..A. can(正确答案)B. mustC. shouldD. need。