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。你为什么不向我提出?
②用来委婉地责备某人过去应该做某事而没有去做，常译为“本来应该”。如：
You could have helped him. 你本来应该帮助他的。
③表示“差点儿就要”。如：
I could have died laughing. 我差点儿笑死了。
2. may / might用于表推测的用法
表示推测，两者都可用，只是might 比may 语气更不确定，表示的可能性更小。
(1) 在句型使用方面：两者均可用于肯定句和否定句，但用于疑问句时，may通常不用于句首，但可用于疑问句的句中（如特殊疑问句等），而might尽管可以用于疑问句的句首，但不算普通，通常会改用其他句式（如用could等）。如：
He may [might] know the answer. 他可能知道答案。
He may [might] not believe you. 他可能不会相信你。
And who may [might] she be? 那么她会是哪一位呢？
(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 may [might] tell his wife. 他也许会告诉他妻子。
He may [might] be writing a letter. 他可能在写信。
She may [might] have read it in the papers. 她可能在报上已读到过此事。
(3)“might+完成式”除表示对过去的推测外，还有以下重要用法：
①表示过去某事可能发生而实际上却并没发生。如：
It was really very dangerous. I might have killed myself. 那真的是太危险了，我差点没命了。
A lot of men died who might have been saved．很多人本来可以获救的却死了。
②表示委婉的批评或责备。如：
You might have made greater progress. 你的进步本来可更大一些的。
You might at least have answered my letter. 你至少可以回我一封信嘛。
3. must表示推测的用法
must 表示很有把握的推测，其意为“一定会”“肯定会”，只用于肯定句，一般不用于否定句或疑问句。表示对现在或未来的情况作推测，后接动词原形；表示对过去情况的推测，接动词完成式。如：
I must be the happiest woman on earth! 我一定是世界上最幸福的女人了。
No, he must be lying. 不，他一定在撒谎
He must have mistaken my meaning. 他一定误会了我的意思。
4. should have done 的用法
should have done只用于谈论过去情况，主要有两个用法：一是用于推测过去已经发生的情况，二是用于指本该发生而实际上未发生的情况。如：
You should have told me so before. 你早就应该告诉我。
He should have arrived by now. 此时他本该到了。
Look at the time! We should have been at the theatre ten minutes ago. 瞧都什么时候了! 十分钟前我们就该到戏院了。
5. need have done 的用法
need have done结构主要用于否定句或疑问句，一般不用于肯定句。用于否定句时，表示本来不必做某事，但实际上却做了；用于疑问句时，用于询问某一过去动作的必要性。如：
You needn’t have hurried. 你当时实在不必那么匆忙。
She needn’t have come in person — a letter would have been enough. 她本不必亲自来——写封信来就足够了。
Need you have paid so much? 你当时真须要付那么多钱吗?
Need they have sold the farm? 他们那时非得把农场卖掉不可吗?
历届NMET中表推测的情态动词的用法
情态动词是中学英语学习中的一个重点和难点，也是高考的重点考察内容之一。其中表示推测用法的情态动词在近几年的高考中更是屡见不鲜。现结合近几年的高考题目，对表推测的情态动词的用法作一归纳，希望对各位考生会有所帮助：
【考例】1. Naturally, after I told her what to do, my daughter _____ go and do the opposite!
A. may
B. can
C. must
D. should
(2003年普通高等学校春季招生统一招生考试英语试题（安徽卷）) 【分析】Can,may,must都可用来表示”推测”，但侧重点各有不同：
May常用来指”事实上的可能性”，而can则表示一种”理论上的可能性”例如：
The railways may be improved.
=It is possible that the railways will be improved.
=Perhaps/Maybe/Possibly the railways will be improved.
铁路可能会得到改进。（意味着已有具体的改进计划或方案。）The railways can be improved.=It is possible for the railways to be improved.
铁路可以得到改进。（意思是铁路还不完善，尚有问题存在。）
理论上的可能性(can)比事实上的可能性(may)更弱。
在一般的陈述句，can与sometimes几乎相同，表示一种偶然的可能性。比如：
Even expert drivers can make mistakes.甚至是很熟练的驾驶员也可能会犯错。
=Even expert drivers sometimes make mistakes.
=It is possible for the expert drivers to make mistakes.
因此，如果讲的是一种特殊情况，不是一般情况，就用may,试比较：Mr Reed looks pale.He may be ill.
Mr Reed is in poor health.He can be ill at any time.
Must指逻辑必然,作“想必”、“准是”、“一定”解，用来表示我们对某事有把握的推论或揣测。（考虑到迹象如此，再无别的结论=It seems certain that….）:
They must be very tired now, for they have been working the whole morning.
他们现在一定是非常累了，因为他们整个上午都在工作。
析：填 C.must。意思是”不出所料，当我告诉女儿要做的事时，她准会去做相反的事。”
【考例】1、Mary ___ be in Paris.I saw her in town only a few minutes ago.(NMET1994)
A.mustn?t
B.shouldn?t
C.can?t
D.may not
2、.--Is John coming by train? (NMET 2002 Tianjing )
--He should,but he ___ not.He likes driving his car. A．must B.can C.need D.may
【分析】May用于否定时，not不是否定may，而是否定句中的动词，这一点与can不同，试比较：
He may not know the truth.他可能不知道事情的真相。（=It is possible that he didn?t know the truth.）
He cannot know the truth.他不可能知道事情的真相。
must表示推测的这种用法通常用在肯定句中，在疑问句中常用can(可能)，在否定句中常用can?t(不可能，不会是)，而不用mustn?t。例如：
--- Somebody is knocking at the door. Who can it be ? It must be Wang Hong.
--- No, It can?t be Wang Hong, because she left for Shanghai
this morning.
---有人在敲门。会是谁呢？一定是王红。
---不，不会是王红，因为她今天早晨就动身去上海了。
因而You must be joking.在意义上相当于You can?t be serious.析：1、填C。意思是”玛丽不可能在巴黎。几分钟前我还看见她在镇上。2、填D。意思是”--约翰会坐火车来吗？--应该会，但他可能不会。他喜欢开车。”
【考例】1.---I heard they went skiing in the mountains last winter. (NMET 2002Beijing )
---It ___ true because there was little snow there.
A.may not be
B.won't be
C.couldn't be
D.mustn't be
【分析】Could,might表示过去的可能性。
I thought it might be true.我本认为那是真的。
He could be very unreasonable.他有时可能毫不讲理。
析：填C。它是对去年冬天所发生的事进行评价。
【考例】1.--Are you coming to Jeff?s party? (NMET 2000) --I?m not sure.I_____go to the concert instead.
A.must
B.would
C.should
D.might
2.---Look!The clouds are gathering.
---Yes.I'm afraid it _____ be pouring down soon.
A,can B,must C,should D,might
【分析】could和might表示现在的情况时，更带有不肯定性和慎
重味道，构成礼貌或婉转说法，包含或许的意思：
A:I wonder where Tom is. B:He may/might/could be in the library.(Perhaps he is in the library.)
因此在wonder, fear,be afraid等后接的从句中,通常用may/might/could,表达一种探询的观点：
I was afraid you might be out of sorts.我怕你可能心情不痛快。假设性的可能和试探性的可能，也用could和might：
Our team might still win the race.(可以意译为：It is possible,th ough unlikely,that ……)
析：1、2均填D.might
【考例】Mr. Bush is on time for everything. How _________ it be that he was late for the opening ceremony? A．can B．should C．may D．must
(2001年上海普通高校春季招生考试试卷)
【分析】表示推测的may通常不用于一般疑问句，而要用can代替。Can用于一般疑问句时，还可表示惊讶或怀疑，意思是”（到底）可能有这样的事吗？”，比如：
“There is the doorbell.””Who can it be at this time of day?”有人按门铃。””这个时候到底会是谁呢？”
Must也偶尔用于疑问句：Must there be some good reason for the delay?这个问句设想的是一个肯定的回答，可以解释为”Does there have to be some good reason……?”
may可用于特殊疑问句或wh-从句，意思是”（到底）是…”、”不知是否…”：
I wonder what it may mean.我不知道这究竟是什么意思。
How old may his father be?他父亲到底有多大年纪？（比How old is his father?委婉的说法。）
析：填1、A.can.（布什先生做什么事都很按时。他怎么可能会在开幕式上迟到呢？）
【考例】1. Sorry I'm late. I ________ have turned off the alarm clock and gone back to sleep again.( 2000年普通高等学校春季招生考试(北京、安徽卷)
A. might
B. should
C. can
D. will
2.─There were already five people in the car but they managed to take me as well.
─It__ a comfortable journey. (NMET95)
A.can't be
B.shouldn't be
C.mustn't have been
D.couldn't have been
【分析】“情态动词have + -ed分词”结构可以表示对已发生的事情进行推测, 就表示的可能性程度而言，must最大，could其次，may 更次之，might最小。
must + have + -ed分词: 用于肯定句, 表示推测过去某事“肯定,一定，准是”发生了。其否定形式为：can?t / couldn?t have v-ed, 表
示过去不可能发生某事。may(might) + have + -ed 分词: 用于肯定句和其他否定句, 表示对已发生事情的不肯定的推测, 意为“可能, 大概”, 其中might较may语气更弱, 把握更小。Can/could用于否定或疑问句中,表示对过去发生的事件的“怀疑或不肯定”。could 比can更表示说话人语气的不肯定。例如：
I mailed that letter a week ago. He must have received it.我一周前就发出了那封信, 想必他一定收到了。
I can?t find my keys. I may / might have left them at th e school yesterday.
Jack can?t have arrived yet,otherwise he would have telephoned me.（上海1997）
It couldn't have been Mr. Smith. He has gone to China.不太可能是史密斯先生。他已去了中国。
另外，注意may不可用于疑问句，它的这种功能已为can所取代。例如Can they have missed the bus?的答句是：Yes,they may have done.而不是Yes,they can have done.这一点要注意。
Must偶尔也能用于否定句：His absence must not have been noticed.此句和His absence can?t have been noticed.的意思是一样的。许多评论者认为这类句子是不可能成立的，但它们正在为越我来越多的人所接受和使用，在美国英语中尤其如此。
对正在发生的事情进行推测，则采用”情态动词+be+现在分词”结构，其中情态动词的区别与上相同。
析：答案A、D。can通常不用于肯定句表猜测；”should+have+-ed 分词”表示”过去本来应该做……”，但实际上没有做，意思是”本该…..”，带有责备口气:I was really anxious about you.You shouldn?t have left without a word. (NMET2001) ；”will+have+-ed分词”只是将来完成时的一种形式。【考例】1.It's nearly seven o'clock. Jack ____be here at any moment. (NMET95)
A.must
B.need
C.should
D.can
【分析】should(ought to)表示很可能、预期的意思，指一种尝试性推论，可认为是must的语气较弱的对应词，意思是”应该会、一定。。。吧”。试比较：
Our guests must be home by now.(…I am certain?)我们的客人现在一定到家了。（根据他们动身的时间、路程远近、速度等具体条件，我能断定/肯定他们现在已经到家了。）
Our guests should(ought to) be ho me by now.(…They probably are,but I?m not certain.)我们的客人现在该到家了。（含义是我想他们很可能到家了，但我不能肯定”）
与must不同还在于它常常表示将来：
--When can I come for the photos?I need them tomorrow afternoon.
--They_____be ready by 12:00. (NMET1998) A.can B.should
C.might
D.need
表示不太可能可用should n?t(oughtn?t to):
There shouldn?t(oughtn?t to) be any difficulties.不该有任何困难。
析：填C。意思是”将近七点了。杰克很可能随时会到。”另外，在近几年的NMET中，对情态动词及其它语法项目的考查均放到一定的语境中进行，要求考生利用所学英语各项基础知识进行初步的语言运用，而不再是单纯的语法知识题和短语题。这类试题往往通过题干的其他部分或附加句子提供某个信息，然后让考生根据这个信息进行合理推理，产生新的想法和认识。因此，在做这类题时，除要熟悉所考查的语法规则外，还要认真分析句子的结构，注意抓住关键词，分析上下文的逻辑关系。不能单凭语法规则做题。
巩固练习
1.Michael __ be a policeman, for he's much too short.
A. need't
B. can't
C. should D .may
2.Johnny,you __ play with the knife. You __hurt youself.
A.won't,can't
B.mustn't,may
C.shouldn't,must
D.cant't,shouldn't
3.Peter __ come with us tonight,but taken he isn't very sure yet.
A.can
B.may
C.will
D.must
4.Put on more clothes.You __ be taken feeling cold with only a shirt on.
A.must
B.can
C.could
D.would
5.It's nearly seven o'clock.Jack __ be here at any moment.
A.must
B.need
C.should
D.can
6.I didn't hear the phone.I __ asleep.
A.must be
B.must have been
C.should be
D.should have been
7.Jack __ yet,otherwise he would have telephoned me.
A.mustn't have arrived
B.shouldn't have arrived
C.can't have arrived
D.need not have arrived
8.--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
9.He __you more help,even though he was very busy.
A.might have given
B.might give
C.may have given
D.may give
10.Yesterday Jane waooked away from the discussion.Otherwise,she __ something the would regret later.
A.had said
B.said
C.might say
D.might have said
11.There was plenty of time.She __.
A.mustn't have hurried
B.needn't have hurried
C.should have written it out
D.couldn't have hurried
12.Tom ought not to __ me your secret,but be meant no harm.
A.have told
B.tell
C.be telling
D.haven't told
13.I told Sally how to get there ,but perhaps I __ for her.
A.had to wirte it out
B.must have written it out
C.should have written it out
D.ought to write it out
14.If you had worked harder,you __.
A.would succeed
B.had succeeded
C.should succeed
D.would have succeeded
15.--If he __,he __that food. --luckily he wsa sent to the hospital immediately.
A.was warned;would not take
B.had been warrned;had not taken
C.would be warned;had not taken
D.would have been warned;had not taken
16.--I stayed at a hotel while in New York. --Oh,did you?You __ with Barbara.
A.could have stayed
B.could stay
C.would stay
D.must have stayed
17.Sorry I'm late.I __ have turned off the alarm and gone back to sleep again.
A.might
B.should
C.can
D.will
18.--Shall I tell John about it? --No you __.I've told him already.
A.needn't
B.wouldn't
C.mustn't
D.shouldn't
19.The new airoprt __ if they had not stopped working on it.
A.would complete
B.had been completed
C.had completed
D.would have been completed
20.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
21.That young man has made so much noise that he __ not have been allowed to attend the concert.
A.could
B.must
C.would
D.should
22.Susan __ written a report like this.
A.can have
B.mustn't have D.can't have D.ought to not have
23.There wasd a lot of fun at yesterday's party.You __ come,but why didn't you? A.must have B.should C.need have D.ought to have
[答案及难点解析] 1.B 2.B mustn't表示“禁止”，may表示“不可能” 3.B can表示“理论上的可能、普遍性的可能、当然的可能，并非说话人主观认为可能，即并非猜测”，故不可选A。4.A 5.C at any moment/minute 意为“随时，马上”。 6.B 由句中的时态可知是在对过去的事件进行推测，故用情态动词+have done。7.C 由otherwise…一句可知说话人对Jack没有来持确定的态度。除所给答案外，A也正确。8.D与7题相似，C也是正确的，意为“肯定不舒服”。9.A may不可表示过去的事。10.D 11.B表示“当时本没必要那么匆忙”。12.A 13.C 14.D 15.B 16.A二人相遇的可能性不大。17.A18.A19.D对过去情况的虚拟假设，注意要用被动语态。20.D21.D22.C据常识可知是在对过去的事进行推测。23.D
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。你为什么不向我提出? ②用来委婉地责备某人过去应该做某事而没有去做，常译为“本来应该”。如： You could have helped him. 你本来应该帮助他的。 ③表示“差点儿就要”。如： I could have died laughing. 我差点儿笑死了。 2. may / might用于表推测的用法 表示推测，两者都可用，只是might 比may 语气更不确定，表示的可能性更小。 (1) 在句型使用方面：两者均可用于肯定句和否定句，但用于疑问句时，may通常不用于句首，但可用于疑问句的句中（如特殊疑问句等），而might尽管可以用于疑问句的句首，但不算普通，通常会改用其他句式（如用could等）。如： He may [might] know the answer. 他可能知道答案。
情态动词表推测用法总结(整理稿)
情态动词表推测用法总结 （一）情态动词表推测 能用于表推测的情态动词： 英语情态动词表推测的时态构成 （1）语气部分：（以下情态动词语气由强至弱） 肯定句：must、may、might（=could） 否定句：can’t（=couldn’t）、mayn’t、mightn’t 疑问句：can、could（语气更加委婉不确定） （2）时态部分： 一般现在或一般将来时间的推测：情态动词+be；情态动词+v. 对过去时间的推测：情态动词+have done 对正在进行的时态的推测：情态动词+be doing （二）表许可、请求 1、 can, could 2、may, might 3、must 4、shall 5、will, would 1. can, could 1) 用在疑问句中，表示一般的请求。两者不同在于：用could 要比用can更加委婉，特别是没有把握得到允许时。 Can I go with you? 我能和你一起去吗？Could I ask you something? 我能问你一个问题吗？ 2) 用在陈述句中，表示许可：You can leave when you finish your work. 做完事情后你才可以走。 2. may, might 1) may用在疑问句中，也表示一般的请求。同can相比，may比较正式，常常表示尊敬之意。并且，may在疑问句中常用于第一人称，很少有May you…/they…这样的句型。Might比较少用在疑问句中，它表示请求的时候常用陈述句。 May I make a suggestion? 我可以提个建议？ 2) 用在陈述句中，表示许可，此时与can, could相近。 You may have a rest before we set out again. 我们再次出发之前你可以先休息一下。 3. must 1) 表示说话人“不许”和“禁止”某人做某事，有很强的劝告语气。 Cars must not be parked here.此地不准停车。 2) Must的一般疑问句的回答有两种，表示肯定，用Yes, you must. 表示否定，用No, you needn’t. Must I post this letter tomorrow? 我明天必须得寄掉这封信吗？ Yes, you must. 是的，你必须明天寄掉。
(完整word版)情态动词表推测专项练习题
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 go B. had to go C.must have gone D.has gone 2. We had a wonderful time yesterday. You ———— .Why didn't you come? A. had to come B.should have come C.might have come D.must have come 3. ─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 4. My sister met him at the Grand Theatre yesterday afternoon, so he ___ your lecture. A. couldn't have attended B. needn't have attended C. mustn't have attended D. shouldn't have attended 5. I was really anxious about you. You _____ home without a word. A. mustn't leave B. Shouldn't have left C. Couldn't have left D. needn't leave 6. Oh, I’m not feeling well in the stomach,I_____ so much fried chicken just now. A. shouldn’t cut B. mustn’t have eaten C. shouldn’t have eaten D. mustn’t eat 7. Mr.White _____ at 8:30 for the meeting, but he didn’t’ show up. A. should have arrived B. should arrive C. should have had arrived D. should be arriving 8. You ______ be tired - you've only been working for an hour. A. must not B. won' t C. can' t D. may not 9. - Isn' t that Ann's husband over there? - No, it _______ be him -I'm sure he doesn't wear glasses. A. can't B. must not C. won't D. may not 10. 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’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 doing B. must have been doing C. could have done D. would have done 12. He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside. A. should B. must C. wouldn’t D. can’t 13. ---- 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 through B. might go through C. ought to have gone through D. 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 put 15. —Catherine, I have cleaned the room for you.
情态动词表猜测的用法
情态动词表猜测的用法 情态动词must,can,could,should,may,might 等可以用在句中表示猜测。 1.“情态动词+动词原形”表示对现在或将来情况的猜测 I don’t know where she is. She may be in Wuhan. 2.“情态动词+进行式”表示对现在或将来正在进行的情况的猜测 At this moment, our teacher must be correcting our exam papers. 3.“情态动词+完成式”表示对过去情况的猜测 You must have been caught in the rain on your way home yesterday. 4.“情态动词+完成进行式”表示对过去正在进行的情况的猜测 Your mother must have been looking for you. 5.推测的否定形式用can’t/couldn’t，may not/might not表示
Mike can’t have found his car, for he came to work by bus this morning. 6.句子中含有表示猜测的情态动词时，其反 意疑问句的构成不能再用原句中的情态动词，而应根据原句在去掉情态动词的情况下的主谓关系来确定其反问形式。 ①The man in the white clothes must be a doctor, isn’t he? ②She must have seen the film before, hasn’t she? ③He must have an uncle abroad, doesn’t he? ④You must have met Uncle Wang in the shop yesterday, didn’t you? 7.在表示“猜测”方面的区别 情态动词must,can,could,should,may,might 都可以用于表示“猜测”（注意：could, might 表示推测时不表示时态, 其推测的程度不如can, may）。实际上，“猜测”与“可能性”在逻辑上是有必然联系的。如果认为没有某种可能性，人们就不会作出某些猜测。因此，请注意六个情态动词之间的区别与它们各
初中英语情态动词表推测练习题
★★★★★ 情态动词表推测 【2013天津】—? —, ' . A. ’t B. C. D. 't 【2013四川南充】—, ? —’s. . A. B. C. ’t 【2013湖南益阳】24. . . A. B. C. ’t 【2013江苏盐城】— a ? —, I’ I . A. B. ’t C. D. ’t 【2013福建泉州】—? — . . 's a . A. B. C. 【2013山东潍坊】21. ’t , . A. B. C. D. 【2013湖南株洲】, 's . ! . A. B. C. 【2013黑龙江绥化】—? —’s. ’s . A. ’t; B. ’t; C. ’t; 【2013 湖北黄冈】—’s ? . ? —. ’s . A. B. ’t C. D. ’t 【2013广西贺州】. . . A. ’t B. C. D. ’t 【2013甘肃兰州】—. ? —. , ’s . A. ’t B. C. ’t D. 【2013湖北宜昌】—! — ! a , a . A. B. D. D. 【2013湖北孝感】—. . ? —. . a . A. B. C. D. ’t 【2013湖北十堰】— a ! ! —I’m . ’s . A. ’t B. C. D. 【2013山东烟台】—? —’s. , . A. ’t B. C. ’t D. 【2013浙江宁波】’s a . A. ’t B. ’t C. D. 【2013广东】—. ? —. a . A. B. C. ’t D. ’t 【2013福建福州】—? — . . 't B. 't C. 't 【2012河南】—?
最新情态动词表推测的讲解及练习题
九年级英语表推测语气的讲解与练习 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be e.g.She must 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 done e.g.She might 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： 1.must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 sure 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？
情态动词表推测用法总结(整理稿)
补充强调：推测的句型特点(对某一次的推测句型有两部分：语气和时态) (1)语气部分：(以下情态动词语气由强至弱) 肯定句：must、may might ( =could) 否定句：can，t ( =couldn 't )、mayn t> mightn 't 疑问句：can> could (语气更加委婉不确定 (2)时态部分： have done 表示对过去的推测 be doing 表示对正在进行的推测 be表示对现在的推测 语气部分写在前时态部分写在后，组合在一起就是推测 (-)情态动词表推测的三种句_ 能用于表推测的情态动词:must, can, could, will, would, may, might, should, ought to 1. 在肯定句中一般用must (一定)，may (可能)，might / could (也许，或许)。 (1)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。 (2)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 (不可能)，may not/might not (可能不)。 (1)It can J t/couldn 't be the headmaster? He has gone to America.这不可能是校长，他去美国了。 (2)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 (能..?)。 (1) Could he have finished the task? 他可能把任务完成了吗？ (2) 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并非的过may, can 去式，而表示语气较为委婉或可能性较小。 (二)情态动词表推测的三种时丄
情态动词表推测专项练习题
1. Look! The light is out in her room. She ———— to bed already. A. must go B. had to go C.must have gone D.has gone 2. ─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 3. My sister met him at the Grand Theatre yesterday afternoon, so he ___ your lecture. A. couldn't have attended B. needn't have attended C. mustn't have attended D. shouldn't have attended 4. You ______ be tired - you've only been working for an hour. A. must not B. won' t C. can' t D. may not 5. - Isn' t that Ann's husband over there? - No, it _______ be him -I'm sure he doesn't wear glasses. A. can't B. must not C. won't D. may not 6. 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 doing B. must have been doing C. could have done D. would have done 7. He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside. A. should B. must C. wouldn’t D. can’t 8. 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 put 9.—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
2019年秋人教版九年级Unit 8情态动词表推测精练(含答案及解析)
2019年秋人教版九年级 Unit 8 情态动词表推测精练 一、单项选择 1. —Look! It ______ be David in the classroom. —It _______ be him. Because I saw him in the library a moment ago. A. may; mustn’t B. must; can’t C. can; can’t D. mustn’t; can 2. Harry's been driving all day—he ______ be tired. A. need B. can C. shall D. must 3.—Look! The man at the gate ______ be our headmaster. He is always standing there every morning. —No, it ______ be him. He is holding a meeting in the office now. A. must; can’t B. must; mustn’t C. can’t; can’t D. can’t; mustn’t 4. －I have been to the moon twice. －You_____ be joking! It's impossible! A . can B. may C. must D. need 5. —Do you have any plans for this Sunday? —I'm not sure. I ______ go to the countryside to see my grandmother. A. can B. must C. may D. need 6. —Is that woman your head teacher? —No, it ______ be her. Our head teacher is in her office. A. mustn’t B. can’t C. needn’t 7. —Will Karen come to our party? —She hasn't decided yet. She _______ come. A. need B. must C. may D. has to 8. The green dictionary _______ belong to _______. Her name is on it. A. may, Carla's B. must, Carla C. can't，Carla D. must, Carla's 9.—Is that man Mr. Smith? —It _____ be him. He has gone to New York on business.
表示推测的情态动词
表示推测的情态动词 ■肯定的推测 must, should, may(might) 或could（一般不用can），其中，must的语气最强，译为“一定，准是，想必是”；may(might) , could的语气最弱，译为“也许”、“可能”。如：Th e computer doesn’t work. There must be something wrong with it. 这台计算机开 不了机。一定是有什么毛病了。 It should be fine tomorrow. 明天很可能天晴。 If you look at the moon, you may/might have many questions to ask. 如果你看看月亮，或许会有许多问题要问。 This project could create 5,000 new jobs. 这项新工程可能给5千人带来新工作。 ■否定的推测 表示可能但不是肯定无疑时，常用should not(恐怕不会) ，或用may not, might not或could not，译为“可能不，也许不”；否定语气较强时，则用can’t或couldn’t，译为“不可能”。如： Don’t worry, your father may not have been hurt seriously. 别急，你父亲也许伤得不厉害。 He might not be in England. 他或许不在英国。 There shouldn’t be any difficulty about getting you a visa. 给你弄个签证恐怕不会有什么困难。 After what had happened he could not continue to work there. 鉴于所发生的事情，他不可能继续在那里工作下去了。 He can’t be more than thirty. 他不可能在三十以上。 ■疑问句中的推测 一般用can或could。如： What can he mean? 他可能是什么意思呢? What could have become of him now? 现在他可能怎么样了呢? ■后接的动词形式 对现在或将来的推测一般接动词原形；若表示说话是正在发生的情况，用情态动词+be +现在分词；若要表示对过去的情况进行推测时，用“情态动词+ have + 过去分词”。如：You must know Diana surely. 你准会认识戴安娜。 You must be joking. 你准是在说笑话。
最新高中情态动词练习题及答案详解
最新高中情态动词练习题及答案详解 一、单项选择情态动词 1．I’m sorry, but you _____ go wrong. There’s no such man here. A．need B．can C．must D．will 【答案】C 【解析】 【详解】 考查情态动词。句意：很抱歉，但是你一定是弄错了。这儿没有这么个人。A. need需要； B. can能够； C. must必须； D. will将会。must指有把握的推测，“一定；必定”，结合下文There’s no such man here.可知一定是弄错了。故选C。 2．Using AI， many companies are now conducting experiments that__________ possible just a few years ago． A．would have been B．might have been C．shouldn't have been D．couldn't have been 【答案】D 【解析】 【详解】 考查情态动词表推测。句意：很多公司现在使用人工智能进行试验，这在几年前是不可能的。根据“a few years ago”可知，此处表示“过去不可能”，应该用couldn’t have done，故D 项正确。 3．Mr. Baker, some students want to see you. ______ they wait here or outside? A．May B．Should C．Shall D．Will 【答案】C 【解析】 【详解】 考查Shall的用法。句意：贝克先生，有些学生想见你。他们是在这里等还是在外面 等?Shall用于第一、第三人称疑问句中，表示说话人征求对方的意见或向对方请示。故选C。 【点睛】 Shall的用法 Shall作为助动词，一般用于第一人称Ⅰ和We，表示一个将来的动作，构成将来时态。Shall后面接动词原形。例如： （1）I shall think it over and Let you know my idea.我将考虑一下此事，然后告诉你我的想法。 （2）We shall have a good time in the park.我们在公园里会玩得很高兴的。常考的特殊用法 1. Shall用于第一人称，表示征求对方的意愿。如：What shall we do this evening? 2. Shall用于第一、第三人称疑问句中，表示说话人征求对方的意见或向对方请示。如：
情态动词表推测的用法
情态动词表推测的用法 一、must表示推测的用法 must表示推测时，只用于肯定句，表示很大的可能性，意为“一定，准是，必然会”。其否定形式是can’t/couldn’t (不可能)。例如： 1. You haven’t eaten anything since this morning; you must be hungry. 2. That can’t be Mary —she’s in hospital. 二、can/could表示推测的用法 1. can表示推测时，多用于肯定句和疑问句。当用于肯定句时，指“有时可能会”，是理论上的可能，其时间意义宽泛不具体。例如： Even experienced teachers can make mistakes. 2. could表示推测时，既可以用于肯定句，又可以用于疑问句。例如： My book has disappeared. Who could have taken it? 3. can’t/couldn’t表示推测时，用于否定句，是语气最强的否定推测，意为“不可能，一定不(是)”。例如： He can’t/couldn’t have see n her there. 【即学即练】 一、用表示推测的情态动词must, could, , can的适当形式填空。 1. — Hi, Tom. Any idea where Jane is? — She be in the classroom. I saw her there just now. 2. — I hear they went skiing in the mountains last winter. — It be true because there was little snow there. 3. Accidents happen on such rainy days. 二、翻译下列句子，注意情态动词的推测用法和情态动词后动词的形式。 —那个人一定是布朗先生。—不可能是他，他去纽约了。 【反义疑问句】又叫附加疑问句。它表示提问人的看法，没有把握，需要对方证实。反义疑问句由两部分组成：前一部分是一个陈述句，后一部分是一个简短的疑问句，两部分的人称时态应保持一致。如：She was ill yesterday, wasn’t she? They don’t work hard, do they?
情态动词表推测归纳
情态动词表推测归纳 一、can／could can和could没有时态上的区别，只是表示可能性的大小，can表示的可能性比could大。 （1）对现在或将来动作或状态的推测 The shy girl can’t (couldn’t) be our monitor. 这位害羞的女孩不可能当我们的班长。 （2）对过去事实的推测 can （could）＋have＋动词过去分词，表示推测过去某动作“可能”发生了，或者表示过去某动作有可能发生，但未发生，意为“本来可以……”。 can’t（could’t）＋have＋动词过去分词，表示推测过去动作一定没有发生。He’s an hour late, and the bad weather can have delayed him. 他迟到了一小时，可能是恶劣的天气使他耽误了。 The road isn’t wet. It couldn’t have rained last night. 路面没有湿，昨天晚上肯定没下雨。 二、may/might （1）对现在或将来动作或状态的推测 She may (might) be washing her clothes. 她可能正在洗衣服。 （2）对过去事实的推测 A.may／might＋have＋动词的过去分词，表示推测过去某动作“也许”发生了； might＋have＋动词的过去分词，表示推测的语气更加委婉。 He says that she may/might have misunderstood him. 他说她可能误解他了。 B.may/might＋have＋been＋动词的现在分词，表示推测过去某动作是否正在 进行或一直在进行。 He may/might have been buying stamps when you saw him. 你看见他时他可能正在买邮票。
情态动词表推测用法讲解及配套练习
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： 1.must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 sure 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）他准时个工人，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？ 2.?can / 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”。 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？ （4）could可用于表示某事有可能发生或可能是事实。 Don’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 station?
情态动词表推测专项练习题
: 1. Look! The light is out in her room. She ———— to bed already. A. must go B. had to go have gone gone 2. We had a wonderful time yesterday. You ———— .Why didn't you come A. had to come have come have come have come 3. ─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 4. My sister met him at the Grand Theatre yesterday afternoon, so he ___ your lecture. A. couldn't have attended B. needn't have attended C. mustn't have attended D. shouldn't have attended 5. I was really anxious about you. You _____ home without a word. A. mustn't leave B. Shouldn't have left | C. Couldn't have left D. needn't leave 6. Oh, I’m not fe eling well in the stomach,I_____ so much fried chicken just now. A. shouldn’t cut B. mustn’t have eaten C. shouldn’t have eaten D. mustn’t eat 7. _____ at 8:30 for the mee ting, but he didn’t’ show up. A. should have arrived B. should arrive C. should have had arrived D. should be arriving 8. You ______ be tired - you've only been working for an hour. 》 A. must not B. won' t C. can' t D. may not 9. - Isn' t that Ann's husband over there - No, it _______ be him -I'm sure he doesn't wear glasses. A. can't B. must not C. won't D. may not 10. 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 doing B. must have been doing 》 C. could have done D. would have done 12. He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside. A. should B. must C. wouldn’t D. can’t 13. ---- The woman biologist stayed in Africa studying wild animals for 13 years before she Oh, dear! She _______ a lot of difficulties! A. may go through B. might go through C. ought to have gone through D. 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 put # 15. —Catherine, I have cleaned the room for you. —Thanks. You it. I could manage it myself.