【英语】英语情态动词易错剖析

【英语】英语情态动词易错剖析
【英语】英语情态动词易错剖析

【英语】英语情态动词易错剖析

一、单项选择情态动词

1.— Mum, little Ray broke his toys again!

—It doesn't matter. You see, accidents _____happen.

A.shall B.should C.must D.will

【答案】D

【解析】

【详解】

考查情态动词辨析。句意:——妈妈,小雷又弄坏了他的玩具。——没事的,你看,意外总会发生。A. shall将要,会;B. should应当;C. must必须;D. will总是。Will可以表示习惯,意思为“惯于,总是”。故D选项正确。

【点睛】

will/would是情态动词,其表达的意思如下。

(1)表示意志或意愿:决心,愿意,……好吗?

We will do our best to save the child. 我们会尽力抢救这个孩子。

I told her to stop crying, but she just wouldn’t listen. 我叫她别哭,可她就是不愿听。

注:表示请求、建议或征求对方意见时,用Would you…? 比用Will you…?更婉转。如:Will/Would you please keep the door open? 请让门开着好吗?

Will/Would you go with me? 你愿意和我一起去吗?

(2)表示真理或习惯:惯于,总是。如:

Oil will float on water. 油总是浮在水面上。

She will listen to music alone in her room for hours. 她独自在房间里听音乐,一听往往就是几小时。

He would get up early when he lived in the country. 他住在乡下时总是早起。

(3)表示要求:一定,必须。如:

You will report to me afterward. 你稍后一定要向我报告。

(4)表示猜测:可能,大概。如:

This will be the house you’re looking for. 这大概就是你找的那所房子了。

(5)表示功能:能。如:

This auditorium will/would seat one thousand people. 这个礼堂能容纳一千人

分析句子可知,本句中的will表示习惯,意思为“惯于,总是”且符合语境。故D选项正确。

2.What a pity! Considering his ability and experience, he ___________ it better.

A.need have done B.must have done

C.can have done D.might have done

【答案】D

【解析】

【详解】

考查虚拟语气中的情态动词。句意:真遗憾啊!考虑到他的能力和经验,他也许可以做得更好。can have done较少使用此结构,表示对过去行为的怀疑;用于疑问句时意为“难道

真的做了吗”,表示怀疑;need have done需要做某事,实际上却未做(表示虚拟语气);must have done一定做了某事(表示对过去发生的事情的肯定推测);might have done表示对发生过的事情的推测,意思是“可能已经”或“也许已经”,用于肯定句中。故D正确。【点睛】

本题是高考必考考点,一定要牢记句型意思。must have done过去肯定做了某事。should have done本应该做而实际未做。can’t have done过去不可能做了某事;shouldn’t have done 本不应该做而实际做了。need have done本有必要做某事而没做;needn’t have done本没有必要做某事;注意没有mustn’t have done的形式。

3.According to a newly released regulation on online video services, no one _____ generate, release or spread fake news or information by using such technologies.

A.can B.shall C.will D.may

【答案】B

【解析】

【详解】

考查情态动词。句意:根据最新发行的关于网络视频服务的规章,任何人都不可以使用此类技术生成、发行或者传播虚假消息。A. can 能够,有时会;B. shall 一三人称表示征求对方意见;二三人称陈述句,表示允诺、威胁、恐吓或法律条文的规定。C. will 意愿;D. may 也许,可能。根据前面的regulation(规定)可知,本题选shall更加合理。故选B。

4.Our English teacher is considerate,helpful,and warm-hearted,but sometimes

she________________ be angry at our silly mistakes.

A.should B.must

C.can D.shall

【答案】C

【解析】

【详解】

考查情态动词。句意:我们的英语老师很体贴、乐于助人、热心肠,但有时她可能为我们愚蠢的错误而发火。can表示一种客观的可能性,但不一定会发生,故C项正确。

5.—It’s already 11 o’clock , and he ______ have been here half an hour ago.

—Maybe he got caught in the rain.

A.must B.ought to

C.may D.can

【答案】B

【解析】

【详解】

考查情态动词。句意:已经11点了,他半小时前就该到了。A. must have done必定做了…(表示对过去的推测);B. ought to have done 本应该做的;C. may have done可能已经做过某事;D. can have done本来可以做的(但没有做),根据题意,故选B。

6.—Daddy, would you please buy me an iPhoneX?

—If you can pass this midterm examination, you __________ have one as a reward.

A.must B.need

C.would D.shall

【答案】D

【解析】

【详解】

考查情态动词。句意:爸爸,你可以给我买部iPhone X吗?--如果你通过考试,你就会得到一部作为奖励。A. must一定;B. need必要;C. would将,会;D. shall会。根据语境可知,这句话是父亲对子女的允诺,故选D。

【点睛】

shall的用法。

1. 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。

2. shall用于第一人称,表示征求对方的意愿。如:What shall we do this evening?

3. 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:Shall we begin our lesson? When shall he be able to leave the hospital?

4. shall用于第二、第三人称,表示说话人给对方命令、警告、允诺或威胁。如:You shall fail if you don't work harder. (警告) He shall have the book when I finish reading. (允诺)He shall be punished. (威胁)

比如本题,根据语境可知,这句话是父亲对子女的允诺,故选D。

7.Students ____ remain in their seats until all the papers have been collected according to the regulation.

A.would B.shall C.will D.could

【答案】B

【解析】

考查情态动词。句意:学生们必须呆在自己的座位上,直到所有的试卷都被收回。根据句意,“学生们呆在自己的座位上”是一项规定。shall 可表示某种规定或义务,用于第二、三人称的句子中。而其他情态动词无此用法。故正确答案为B。

8.I love the weekend, because I ________ get up early on Saturdays and Sundays. A.mustn’t B.need n’t

C.wouldn’t D.shouldn’t

【答案】B

【解析】

【详解】

考查情态动词。句意:我喜欢周末,因为周六周日不必早起。A. mustn’t不能,禁止;B. needn’t不必;C. wouldn’t不会;D. shouldn’t不应该。此处表示“不必”,故B项正确。

9.—You rang me up at about 10:00 last night, didn't you?

—No, I didn't phone you. It someone else.

A.must have been B.could be C.must be D.could have been 【答案】A

【解析】

【详解】

考查情态动词+have done。句意:“昨晚10点左右你给我打了电话,是吗?”“不,我没给你打电话。一定是别人干的。” must have done 是对过去发生的动作最有把握的猜测,意思是“一定”,结合语境可知,我没有打电话给你,因此猜测一定有别人给你打了电话。故选A 项。

10.he law is equally applied to everyone. No one _______ be above it.

A.shall B.must

C.may D.need

【答案】A

【解析】

【详解】

考查情态动词。句意:法律面前人人平等。没有人能凌驾于法律之上。A. shall用于第二、第三人称,则含有命令、警告、允诺或威胁的语气。B. must(必须,一定)用于肯定句。

C. may(可以,能够)表允许时一般不与第三人称连用。

D. need (表示没有必要或询问是否有必要) 需要;故选A。

11.The room is so clean. He ________ have cleaned it yesterday evening.

A.will B.need

C.can D.must

【解析】

【详解】

考查情态动词表推测。句意:房间如此干净,他一定是昨天晚上打扫过了。must have done 表示对过去发生的事情有把握的猜测,意思是“一定(做过)”,故D项正确。

12.—It’s really great to have a computer to store my photos.

—Don’t count on it too much. It ________ break down and you’d better make a copy of them. A.must B.can

C.should D.will

【答案】B

【解析】

【详解】

考查情态动词。句意:——有一台计算机来储存照片真是太棒了。——不要过度依赖它。它有时候也会出故障,你最好做一个备份。计算机出故障这是可能的事情,表示客观可能性用can。must肯定,必须;should应该;will表意愿。故B选项正确。

13.It has been announced that all the candidates ___________ remain in their seats until all the papers have been collected.

A.shall B.could

C.would D.ought

【答案】A

【解析】

【详解】

考查情态动词用法。句意:据宣布,所有的候选人都要坐在位置上,直到所有的试卷都被收齐。根据句意可知本句是考试规则,情态动词shall可以表示“按照规则/规定/法律要做

的事情”,符合本句语境。故A项正确。

14.It is really cold and the ground is wet; it ________ have rained last night.

A.might B.must

C.can D.should

【答案】B

【解析】

【详解】

考查情态动词辨析。句意:天气很冷而且地面是湿的,昨晚一定下了雨。根据上文the ground is wet可知,“昨晚下了雨”是肯定的,故用must have done“必定做了……”表示对过

去十分有把握的推测,故选B。

【点睛】

must have done用法辨析

must have done:表示对过去的肯定的逻辑推测,推定某件事情、动作或状态可能在过去发生过(存在过)。

He must have been a doctor, for he knows medicine so well. 他过去肯定是一位医生,他对医学如此了解。

Somebody must have stolen the ring. 肯定有人偷了这枚戒指. [该句所推断的偷窃动作发生在过去.]

The temperature must have dropped to below zero last night, because the water is frozen all over.昨夜的温度肯定降到零度以下,因为水都冻住了。

如果“must + have + 过去分词”句型与by now连用,还可以表示对现在完成的动作和状态的肯定推测,但实质上还是指所推测的过去的动作。例如:

They started early this morning; they must have arrived by now. 他们今晨很早就出发了,现在肯定已经到了。

中国学生的常见病句是:They...; they certainly have arrived.病句的句义是“他们当然已经到

达了。”(这不是对过去的肯定推测,而是断定动作已经完成。)

15.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:Shall we begin our lesson?When shall he be able to leave the hospital?

3. Shall用于第二、第三人称,表示说话人给对方命令、警告、允诺或威胁。如:You shall fail if you don't work harder. (警告)

He shall have the book when I finish reading. (允诺)

He shall be punished. (威胁)

16.I still find it hard to imagine that such a clever child __________ make such a foolish mistake.

A.shall B.must

C.can D.should

【答案】D

【解析】

【详解】

考查情态动词。句意:我仍然难以想象这样聪明的孩子竟然犯这样愚蠢的错误。should 作为情态动词,可以用来表示意外、惊喜或者在说话人看来是不可思议的,常常译为"竟会"、"居然",这么聪明的孩子竟然犯这样愚蠢的错误。表示意外,shall表示允诺,命令等,must表示必须,can表示能力及可能性。所以答案选D。

17.—Where is my dictionary?I remember I put it here yesterday.

—You___it in the wrong place.

A.must put B.should have put

C.might put D.might have put

【答案】D

【解析】

【详解】

考查情态动词。句意:——我的词典在哪里?我记得昨天放在这里了。——你或许放错了地方。“might have +动词+ed形式”表示过去可能完成的动作。根据所提供的情景Where is my dictionary? I remember I put it here yesterday.可判断出把词典放在某个地方发生在过去,所以要用“might have +动词+ed形式”。“should have + 动词+ed形式”表示“(过去)本来应该做某事”。must意为“一定”,是肯定的推测,与所提供的情景的矛盾。might put表示现在发生的事。故选D。

18.We’ll make the final decision on our scheme. ______ you change your mind, please inform us as soon as possible.

A.Should B.Were C.Would D.Had

【答案】A

【解析】

【分析】

【详解】

考查虚拟语气。句意:我们将对我们的计划做最后决定。如果你改变主意,请尽快通知我们。根据语境,此处用虚拟语气,表示与将来相反,从句用should+动词原形,省略if,should提前,陈述句是:If you should change your mind……。故选A。

【点睛】

虚拟语气中的倒装

当虚拟条件句中含有 were,had,should时,可以将if省略,然后将 were,had,should,移至句首:

1)If he should fail, he would kill himself.

→Should he fail, he would kill himself.

万一失败,他就会自杀。

2)If I were you, I would do it at once.

→Were I you, I would do it at once.

假若我是你,我就会马上做。

要是我能做此事,我一定会做。

3)If he had seen you yesterday, he would have asked you about it.

→Had he seen you yesterday, he would have asked you about it.

他昨天要是看到了你,他就会问你这事了。

该小题属于上述的第一种情况。should作为情态动词,有一种特殊的用法:在虚拟条件状语从句中表示与将来事实相反的虚拟语气,可以把should放在句首,即主语前,从而省略从属连词if。原来的表述为:If you should change your mind。故选A。

19.—It's so cold here! Why haven't you turned on your air-conditioner?

—Well, it ______ turn on.

A.shouldn't B.can't C.won't D.shan't

【答案】C

【解析】

【详解】

考查情态动词。句意:——这里太冷了!你为什么不把空调打开呢?——嗯,这个空调老是打不开。A. shouldn't不应该;B. can't不能;C. won't偏偏不,老是不,此处是表示习惯或倾向;D. shan't不会。这里使用will的否定won't表示事物的自然属性“空调总是开不开”。故选C项。

20.—Jim ________ what I said annoying though he didn’t say anything.

— So you mean you will have to apologize to him?

A.must find B.might find C.should have found D.must have found 【答案】D

【解析】

【详解】

考查must have done结构。句意:——吉姆一定觉得我说的话很让人烦,尽管他什么也没说。——所以你是说你得向他道歉?根据“though he didn’t say anything.”可知此处表示对过去事情的肯定推测,用must have done表示“过去一定做了……”,故D项正确。

21.Tom, you _____ leave all your clothes on the floor like this!

A.wouldn’t B.mustn’t C.needn’t D.may not

【答案】B

【解析】

【详解】

考查情态动词辨析。句意:汤姆,你不要把所有的衣服都这样扔在地板上! A. wouldn’t 不会; B. mustn’t 禁止;C. needn’t不需要;D. may not不可以。本句为祈使句,所以mustn’t “禁止”符合句意。故选B项。

22.—Did you attend the meeting for the experiment project yesterday?

—Yes, but I don’t think I ____ because my director was there.

A.need to have B.need to C.needed to D.need have

【答案】D

【解析】

【分析】

【详解】

考查情态动词+have done。句意:——你昨天参加实验项目的会议了吗?——是的,但我想我(本来)不需要,因为我的主管在那里。Think/suppose等宾语从句中如果有否定词时,要把从句的否定词not前移,即“否定前移”。所以not是从句中的否定词。“need have done”意为“本来有必要做而未做”;“needn’t have done”指过去本来没必要做而做了。根据上一句时间状语“yesterday”可知本句指的是过去发生的事。结合第二句“because my director was there(我的主管)在”可推断出,我本来不必要去。故选D。

23.Every coin has two sides. Beautiful songs, sometimes, ________ just be noise to others. A.must B.should C.may D.would

【答案】C

【解析】

【详解】

考查情态动词。句意:任何事物都有两面性。美丽的歌曲,有时候,对别人来说也许是噪音。A. must一定,表示肯定推测;B. should应该;C. may也许,可能;D. would将会,表示对将来的推测。分析句子可知,此处应该表示可能的推测,“美丽的歌曲,有时候,对别人来说也许是噪音。”。结合选项,故选C。

24.Peter searched all the places where he________have left her iPad but it was all in vain. A.might B.would C.must D.should

【答案】A

【解析】

【详解】

考查情态动词辨析。句意:彼得找遍了所有他可能放她的iPad的地方,但都没有找到。A. might可能;B. would将会;C. must必须,一定;D. should应该。might have done表示对发生过的事情的推测,意思是“可能已经”或“也许已经”,用于肯定句中。故选A。

25.--- I called you last night, but no one answered.

--- Sorry, I _______ sleeping.

A.must have done

B.would have been

C.must be

D.could be

【答案】C

【解析】

【详解】

考查情态动词。句意:—昨晚我给你打电话了,但没人接。—对不起,我一定是睡着了。分析可知,前文提及打电话无人应答,后文解释原因:肯定睡着了。情态动词must可用于must be+v-ing 表示“过去肯定在做某事”,符合句意要求。故选C项。

26.He ______ writing the paper now. He hadn’t written a single word when I left him ten minutes ago.

A.shouldn’t be B.can’t have finished

C.can’t be D.mustn’t have finished

【答案】B

【解析】

【详解】

考查推测句。句意:他现在不可能写完了卷子。我十分钟之前留下他时,他还没有写一个字。根据句意可知,此处考查对过去情况的否定推测,其表达为can’t have done不可能做某事,故选B项。

【点睛】

本题考查推测句

对过去情况的肯定推测是must have done

对过去情况的否定推测是can’t/couldn’t have done

例如:

The ground is wet, so it must have rained last night.

He can’t have finished his work, because he played basketball all day yesterday.

27.—It’s so hot and uncomfortable here! Why are your windows still closed?

—Oh, I’m not to blame. They ________ open.

A.shan’t B.mustn’t C.won’t D.wouldn’t

【答案】C

【解析】

【详解】

考查情态动词辨析。句意:---这里又热又不舒服!你的窗户怎么还关着? ---哦,不该责备我啊。窗户打不开了。shan’t= shall not意为“不可, 不应”;mustn’t=must not意为“不要”;wouldn't=would not 意为“不会,不愿意”。won’t=will not意为“不会, 不能”, will在这里表

示能力、功能。例如:This auditorium will seat one thousand people. 这个礼堂能容纳一千人。这句话意思是“这扇窗不能打开”,故选C项。

28.AI will surely be a feature of future life, but it _____ be used responsibly and in a proper way. A.can B.need C.must D.will

【答案】C

【解析】

【详解】

考查情态动词。句意:人工智能肯定会成为未来生活的一个特征,但必须以负责任的方式和适当的方式使用它。A. can能够;B. need需要;C. must必须;D. will将会。此处为情态动词的一般用法,结合句意表示“必须”,故选C。

29.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。

30.--- 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。

31.-- 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 know.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 一定做了某事,should have done 应该来过,不符合,故选A。

【点睛】

情态动词+have+过去分词的用法,表示推测或判断过去的情况。

can/could+have+过去分词用法:①多用于否定句和疑问句中。表示对过去某事发生的可能性的否定或质疑,意为:不可能(已经)......了-(否定句)/可能(已经)......了嘛?-(疑问句)②用于肯定句中。表示对过去没有做某事的遗憾,含有轻微的责备,意为:本来可以......的(但实际上没有......)。You could have done better, but you were too careless.(肯定句。他能做得更好的)

should/ought to+have+过去分词用法:用于肯定句中。表示对过去没有做某事的遗憾,含有责备的意思,意为:本来应该......的(但实际上没有......)。用于否定句中-表示对过去已经做了某事的责备,意为:本来不应该......的(但实际上已经......了)。He should have been asleep.(肯定句,他本应去睡觉的)He shouldn't have been asleep.(否定句,他本来不应该去睡觉的)。

may/might+have+过去分词用法:用于肯定句和否定句中,表示对过去发生某事的可能性的推测,意为:或许(已经)....../或许还没有......。It is too late. He may have gone to bed. must+have+过去分词用法:表示对过去发生的事情十分肯定的推测。must表示推测时,不能用在否定句和疑问句中。I must have forgotten to tell you.(must 的引入,表达了说话者对过去忘记告诉你的这件事肯定推测)

needn't+have+过去分词

用法:表示对过去已经做了某事的后悔,意为:本来可以不必......的(可实际上却已经......)You needn't have taken a taxi here, for it was very near to my home.

32.---Hi, Johnson, any idea where Susan is?

---It is class time, so she __________ in the classroom now.

A.can be B.must have been

C.might have been D.should be

【答案】D

【解析】

考查情态动词的用法。A. can be可能,可以是;B. must have been一定(对过去事实肯定

的推测);C. might have been可能(对过去事实肯定的推测);D. should be应该是。句意:—知道苏珊在哪里吗?—现在是上课时间,她应该在教室里。故答案选D。

33.— Excuse me, do you mind if I open the window?

— Well, if you __________. I can put on more clothes.

A.can B.may

C.must D.shall

【答案】C

【解析】

【详解】

考查情态动词。句意:-不好意思,我把窗户打开你介意吗?- 好吧,如果你必须这么做的话。我可以多穿点衣服。A. can能够;B. may可能;C. must一定;必须;D. shall会;将。must表示偏要,必须要做的事情,故选C。

34.—What happened to the young trees we planted last week?

—The trees ________ well, but I didn’t water them.

A.might grow B.needn’t have grown

C.would have grown D.would grow

【答案】C

【解析】

考查虚拟语气。——我们上周种的小树怎么了?——这些小树本来会长得很好,但是我们没有给它们浇水。根据语境可知,此处是对过去的事实进行假设,故本题选C。

35.Days later, my brother called to say he was all right, but _______say where he was. A.mustn’t B.shouldn’t C.wouldn’t D.mightn’t

【答案】C

【解析】

考查情态动词。句意:“数天后,我弟弟打电话说他很好,但不肯告诉我他在哪

里。”mustn’t“禁止”;shouldn’t“不应该”;wouldn’t“不情愿”;mightn’t“不可能”。

36.—______ you sing and dance at this late hour of the night?

—Sorry, I will stop right now.

A.May B.Shall

C.Will D.Must

【答案】D

【解析】

试题分析:考查情态动词的用法。 May可以,可能 Shall: 用于第一三人称的疑问句,表示说话人征求对方的意见或向对方请示。?用于二三人称的陈述句表示说话人给对方的命令、警告、允诺、威胁或决心等。?用于法律、法规条文、合同等,按规定应该履行的义务

等。Will 表示请求或建议;表示意愿或表示现在的习惯D. Must表示“必须”“一定”“偏要”之意。此处must表示“偏要,偏偏”。句意:——你偏要在深夜又唱又跳吗?——很抱歉,我会马上停止。

考点:考查情态动词的用法。

37.—Tony _______ what I did annoying though he didn’t say anything.

—So you think you will have to make an apology?

A.could find B.should have found

C.might find D.must have found

【答案】D

【解析】

【详解】

考查情态动词+have done。句意:—Tony一定觉得我做的事很烦人,尽管他什么也没说。—所以你认为你得道歉吗?。由“what I did”可知,此处是对过去事情有把握的推测,must have done“一定是做某事了”。故选D项。

【点睛】

情态动词+ have done结构:

1.“must + have + 过去分词”表示对过去发生的事情或状态进行推测,语气比较坚定,通常只用于肯定句.如:It must have rained last night,for the ground is wet.

2.“can / could + have + 过去分词”表示对过去某种情况的怀疑或不确定.can和could一般用于否定句和疑问句,could的语气较can弱.如:He can't have finished the work so soon.

3.“may / might + have + 过去分词”表示对已发生的动作或存在的状态进行不肯定的推

测,might的语气比may弱一点.这种结构主要用于肯定句和否定句,疑问句改用can或could.如:They may not have known it beforehand.

4.“need + have + 过去分词”表示过去做了不必做或不需要做的事情,或过去做某事纯属多余.如:I needn't have bought so much wine—only five people came.

5.“should / ought to + have + 过去分词”表示过去本该做某事但没做,其否定式表示过去不该做某事但做了,这种句式含有不满或责备之意,ought to的语气比should强一些.如:

You ought to / should have studied harder.你本应该更努力学习的.(但没有)

He oughtn't to / shouldn't have done that.他本来就不该做那件事.(可是做了)

6.“would + have +过去分词”表示对过去的某种情况进行猜测,或本来要做某事却因某种原因未做成,通常用来说明某一情况,但不像用should或ought to那样含有责备之意.如:

I guess the poet would have been about twenty when she wrote her first poem.

Another worker wouldn't have acted like that.

分析句子可知,由“what I did”可知,此处是对过去事情有把握的推测,must have done“一定是做某事了”。故选D项。

38.I ______ worry about my weekend—I always have my plans ready before it comes. A.can’t B.mustn’t C.daren’t D.needn’t

【答案】D

【解析】

【详解】

考查情态动词。句意:我没有必要担心我的周末,我总是在周末到来之前做好计划。A. can’t 不可能;B. mustn’t禁止;C. daren’t不敢; D .needn’t没有必要。由“I always have my plans ready before it comes ”可知,needn’t “没有必要” 符合句意。故选D。

39.Although you ______ find bargains in London, it’s not generally a cheap place to shop. A.should B.need C.must D.can

【答案】D

【解析】

【详解】

考查情态动词辨析。句意:尽管你能在伦敦找到便宜货,但是一般不是购物便宜的地方。

A. should应该;

B. need需要;

C. must必须;

D. can能。 can用在否定句和疑问句中可以表示具体的可能性,用在肯定句中表示理论上的可能性,本句中在伦敦可能能买到便宜货就是理论上的可能性,用can表示。故选D。

40.Sometimes it seems that doors ___________ be closed for you, but remember, they are not all locked.

A.must B.should C.may D.need

【答案】C

【解析】

【详解】

考查情态动词的用法。句意:有时候,似乎大门正对你关闭,但请记住并非所有大门都被上了锁。A. must一定,必须;B. should应该;C. may可能,也许;D. need需要。本句不宜使用绝对化的语气,从sometimes,seems等提示词可看出应使用较为温和的推测语气,因此may be(或许,也许)符合语境,而过于绝对的推测,如must be(一定是,肯定是)应予排除。此外should和need在此并不表示推测,更不符合本句语境。故选C。

(完整)初中英语情态动词练习题及答案

( )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 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 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 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 1 He had better stay here, ___ he? A. doesn'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 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 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 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 1. I told Sally how to get here, but perhaps I _______ for her. A. had to write it out B. must have written it out C. should have written it out D. ought to write it out 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. It’s nearly seven o’clock. Jack _______ be here at any moment. A. must B. Need C. should D. can 4. Johnny, you _______ play with the knife, you _______ hurt yourself.

高中英语情态动词精讲与解析

高中英语情态动词精讲与解析 概说 助动词(auxiliary)主要有两类:基本助动词(primary auxiliary)和情态助动词(modal auxiliary)。基本助动词有三个:do, have和be;情态助动词有十三个:may, might; can, could; will, would; shall, should; must, need, dare, used to, ought to. 上述两类助动词的共同特征是,在协助主动词构成限定动词词组时,具有作用词的功能: 1)构成否定式: He didn't go and neither did she. The meeting might not start until 5 o'clock. 2)构成疑问式或附加疑问式: Must you leave right now? You have been learning French for 5 years, haven't you? 3)构成修辞倒装: Nowhere can he obtain any information about his sister. Hardly had he arrived when she started complaining. 4)代替限定动词词组: A: Who can solve this crossword puzzle? B: Tom can. A: Shall I write to him? B: Yes, do. 情态助动词的特征 基本助动词与情态助动词最主要的区别之一是,基本助动词本身没有词义,而情态助动词则有自己的词义,能表示说话人对有关动作或状态的看法,或表示主观设想: What have you been doing since? (构成完成进行体,本身无词义) I am afraid I must be going. (一定要) You may have read some account of the matter. (或许已经) 除此之外,情态助动词还有如下词法和句法特征: 1)除ought和used以外,其他情态动词后面只能接不带to的不定式。如果我们把ought

初中英语情态动词的基本用法讲解

初中英语情态动词的基本用法讲解 1. can (could) 1)表示能力,could 主要指过去时间。 Two eyes can see more than one. 两只眼比一只眼看得清。 Could the girl read before she went to school? 这女孩上学前能识字吗? 2)表示可能(理论上或是逻辑判断上)。 The temperature can fall to —60 °C , that is 60 °C below freezing. 气温可降至一60 C,也就是零下60 C。 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 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,多避免用这个词,而用其它方式,如Yes, please. / Certainly. / Please don' t ./ You' d better not. / No, you mustn ' t.等,以免显得太严峻或不客气。 2)表可能(事实上)。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。 She may not know about it. 她可能不知道这件事。 He was afraid they might not agree with him. 他担心他们可能不同意他的意见。 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 1)表示义务。意为“必须” (主观意志)。 We must do everything step by step. 我们一切都必须循序渐进地做。 You mustn' t talk to her like that. 你不可能那样对她说话。 --Must we hand in our exercise —books now? 我们现在就要交练习本吗? --No, you needn' t. / No, you don' t have to. 不必。(这种情况下,一般不用mustn' t)2)表示揣测。意为“想必、准是、一定”等,只用于肯定句。

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初中英语情态动词用法归纳

初中英语情态动词用法归纳 话题:动词情态教育学习 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 I can’t .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’t译为“不可能”。如:Can the news be true?这个消息会是真的吗?—Can it be our teacher?那个人有可能是我们老师吗?—No, it can’t be our teacher. He is on a visit to the Great Wall.不可能。咱们老师正在游览长城呢。【例题】—I think Miss Gao must be in the library. She said she would go there.—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’t表示推测[答案] A2. could 的用法:(1).can的过去式,意为“能、会”,表示过去的能力。如: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?—Could I use your pen?我能用一下你的钢笔吗?—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】—_______ 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 .明天可能会下雨。She may be at home.她可能在家呢.(3) .may的过去式为might,表示推测时。可能性低于may。如:He is away from school. He might be sick.他离开学校了,可能是他生病了。(4) .表示希望、祈求、祝愿,常可译为“祝愿”。通常是用may +主+V例如:May you have a good time.祝你过得愉快。May you be happy!祝你幸福!May you succeed!祝你成功!4. must的用法:(1).must表示主观看法,意为“必须、一定”。如:You must stay here until I come back.

高中英语情态动词详解及练习

高中英语情态动词详解 1. 表示请求和允许: can,could ,may,might. 过去式使语气更委婉,答语应用原形。 --- Could I use your computer tomorrow morning? --- Yes,you can.( 否定回答可用:No,I’m afraid not.) 1)can表示理论上的可能性,指某事或情况可能发生,但并不说明实际上真的发生. Children can be very tiring. 2)对现在事情的推测:情态动词+do 对过去事情的推测:情态动词+have done 对已完成事情的推测:情态动词+have done 3)反意问句: He may know the plan,doesn’t he? You must have studied English before,haven’t you? You can’ t have been caught in the rain last night,were you? 3.can & be able to 在肯定句中can表示有“能力”做,be able to表示通过想办法/努力等而能够做成了某一件事,相当于managed to do…或succeeded in doing sth. Birds can fly. The fire spread through the hotel very quickly but everyone was able to get out. 4. may / might as well do sth“还是…好”、“不妨” You might as well tell me the truth. 你还是把真相告诉我的好。 5. must和have to 1) must表示的是说话人的主观看法,而have to强调客观需要。 2)否定形式含义不同。mustn’t禁止,不许可,don’t have to不必 3) must 偏要(做令人不快的事)eg. Must you shout so loudly? 6. shall和should 1)表示说话人征求对方意见和向对方请示,用于第一、三人称。 When shall my father be able to leave hospital? Shall2) 用于第一、三人称2) 用于第二、三人称,表示说话人给对方的命令、警告、允诺或威胁以及说话人的决心。 You shall go with me (命令)/ You shall have the book when I finish it.33(允诺) He shall be punished (威胁)/ Nothing shall stop me from doing it. (决心)

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