英语高中情态动词练习题
英语高中情态动词练习题
一、单项选择情态动词
1．Lack of sleep _______ lead to weakened immunity and memory, and also slow physical growth.
A．shall B．must C．should D．can
【答案】D
【解析】
【详解】
考查情态动词辨析。句意：睡眠不足会导致免疫力和记忆力下降，还会减缓身体发育。A. shall将；B. must必须；C. should应该；D. can会，表示理论上或是逻辑判断上，用can，故选D。
2．—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。
3．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。
4．—It’s already 11 o’c lock , 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。
5．The weather turned out to be fine. I _____________ the trouble to carry the umbrella with me.
A．should have taken B．must have taken
C．couldn't have taken D．needn't have taken
【答案】D
【解析】
【详解】
考查情态动词 + have done。句意：天气转晴了。我本不必费心把伞带在身边。A. should have taken本应该做某事，而实际上没做； B. must have taken对过去发生的事情的肯定猜测；C. couldn't have taken不可能；D. needn't have taken本来不需要，故选D。
6．---Can I pay the bill by credit card?
---Sorry, sir. But it is the management rules of our hotel that payment ______________ be made in cash.
A．shall B．need
C．will D．must
【答案】A
【解析】
【详解】
考查情态动词词义辨析。A. shall用于法律法规或条文中，表示义务、规定等；B. need需要；C. will会；D. must必须。句意：——我能用信用卡支付么？——对不起，先生，现金支付是我们酒店的管理规定。故A项正确。
7．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。
8．would可以表达过去常常做的事，过去习惯发生的动作：
Pirates would bury gold in a cave. 海盗们常常把黄金藏在山洞中。
We would take a walk along the river. 我们过去常常沿河散步。
3. would后接like、love、mind等动词，表示要求、邀请、希望或询问，此时不是说过去，而是对现在的询问：
Would you like to come to my party? 你愿意来我的派对吗？
Would you mind coming with us? 你介意和我们一起吗？
比如本题，would 表示婉转的请求，征求对方的意见，故选A。
9．Traveling by subway ______ sometimes be quite an adventure, especially during the rush hour.
A．must B．can C．shall D．should
【答案】B
【解析】
【详解】
考查情态动词。句意：乘地铁旅行有时可能相当冒险，尤其是在交通高峰期。A. must必须；一定；B. can能够；可能；C. shall将会；D. should应该；应当。本句中can表示客观可能性（客观原因形成的能力），故选B。
10．It wasn’t right to me that such near neighbors not know one another.
A．could B．would
C．should D．might
【答案】C
【解析】
【详解】
考查情态动词。句意：对我来说，很不正常，如此近的邻居居然不认识。A. could可能，能够；B. would将；C. should竟然；D. might可能，也许。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"，住的这么近的邻居居然不认识。表示意外，所以答案选C。
【点睛】
should的用法
1、should 作为情态动词,通常用来表示现在或将来的责任或义务,译作“应该”、“应当”,这时它可以和 ought to, be supposed to 互换使用.例如：You should （= ought to ） tell your mother about it at once.
2、should 作为情态动词,可以用在条件状语从句中,表示语气较强的假设,译作“万一”、“竟然”,这时也可将 should 置于从句之首,即将 should 放在主语前面,而省略从属连词 if。例如：If you should fail to come, ask Mrs Chen to work in your place. （= Should you fail to come, ask Mrs Chen to work in your place. ）
3、should 作为情态动词,可以表示谦逊、客气、委婉之意,译为“可……”、“倒……”。例如：I should say that it would be better to try it again.
4、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.尤其在以 why, who, how 等开头的修辞疑问句或某些感叹句中常常译为“竟会”、“居然”。例如：How should I know it ? 我怎么会知道这件事?
5、should 作为情态动词,可以用来表示有较大可能实现的猜测、推论,通常译为“可能”、“总该……吧”,相当于 be expected to 。例如：They should be home by now, I think. 我想现在他们总该到家了吧。
6、should 作为情态动词,用在由 so that, for fear that, lest 引导的目的状语从句和 in case （that）引导的条件状语从句中,有“能够”、“可能”、“会”之意。例如：They got up early so that they should （= could/ might） catch the first bus in time.
7、should 作为情态动词,可以用于下列虚拟语气句中：
(1）用在表示与将来事实相反的条件状语从句中,构成“ If …… should （do sth）……, …… would/ could/ might （do sth.）…… ”句式。
(2) 用在 suggest （propose）, arrange, plan, decide, advise, order, demand, request, desire, insist 等表示“建议”、“要求”、“命令”、“决定”、“安排”、“计划”、“主张”的动词后面接的宾语从句中。这里的 should 也可以省略。
本句中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"，住的这么近的邻居居然不认识。表示意外，所以答案选C。
11．— 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’r e 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。
12．One of our rules is that every student _______ wear school uniform while at school. A．might B．could
C．shall D．will
【答案】C
【解析】
【详解】
考查情态动词辨析。句意：我们其中一条规则要求每个学生在校期间都要穿校服。shall可以表示“命令，警告，强制要求；允诺；法律，规定要做……”，结合句意可知C正确。
13．The room is so clean. He ________ have cleaned it yesterday evening.
A．will B．need
C．can D．must
【答案】D
【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。
14．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。
15．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。）
16．It_____ have been Tom that parked the car here, as he is the only one with a car.
A．may B．can C．must D．should
【答案】C
【解析】
【详解】
考查情态动词表猜测的用法。句意：一定是汤姆把车停在这儿的，因为他是唯一有车的人。A. may可能；B. can可能；C. must一定；D. should应该。由as he is the only one with a car.可知一定是他把车停在这里的，非常有把握的肯定推测，故选C。
17．-- Catherine, I have cleaned the room for you.
---Thanks. You _______ it. I could manage it myself.
A．needn’t do B．shouldn’t have done C．mustn’t do D．needn’t have done 【答案】D
【解析】
【详解】
考查情态动词辨析。句意: ---凯瑟琳，我已经为你打扫了房间。 - - -谢谢。你本不必这么做的。我自己能行。A. needn’t do不必做某事；B. shouldn’t have done本不应该做某事； C. mustn’t do禁止做某事；D. needn’t have done本不必做某事。由“Thanks. I could manage it myself”可知，needn’t have done“ 本不必做某事，而实际上做了某事”符合句意。故选D 项。
18．—What does the sign over there read？
—“No person___smoke or carry a lighted cigarette,cigar or pipe in this area.”
A．will B．may
C．shall D．must
【答案】C
【解析】
【详解】
考查情态动词辨析。句意：---那边的牌子上写的是什么?---任何人不得在本地区吸烟或携带点燃的香烟、雪茄或烟斗。A. will表示现在的意志、愿望等，意为要，希望； B. may表示许可，或用于请求许可，意为可，可以；C. shall在陈述句中用于第二人称或第三人称，表示说话者的意志、命令、约定、决心、警告、威胁、预言等，意为必须，应该，要，得，给； D. must意为必须, 要,应当。分析句意可知，词句表示任何都不准在这个区域吸烟或携带点着的香烟、雪茄或烟斗。故选C项。
19．— Jim ________ what I said anno ying 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。
20．We ______ have watered these flowers yesterday. Today’s rain will be too much for them. A．can’t B．shouldn’t C．may not D．mustn’t
【答案】B
【解析】
【详解】
考查情态动词。句意：我们昨天不应该给这些花浇水。今天的雨对他们来说太大了。A. can’t不可能；B. shouldn’t不应该；C. may not或许不会；D. mustn’t禁止，不允许。情态动词的完成时should’t have done“本不应该做而做了”。根据Today’s rain will be too much for them.可知，此处指昨天不应该给这些花浇水。故选B。
【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.
21．—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。
22．According to the latest rule, people _______sort household garbage into four categories. A．can B．shall C．may D．need
【答案】B
【解析】
【详解】
考查情态动词辨析。句意：根据最新的规定，人们应该把生活垃圾分成四类。A. can能；B. shall应该；C. may也许；D. need需要。shall用于第二人称表示承诺、命令、警告、威胁
的口吻，这里是指法令规定了……，因此用shall。故选B。
23．We ________ take clean drinking water for granted. One day we may run out of it. A．needn't B．can't
C．won't D．shouldn't
【答案】D
【解析】
【详解】
考查情态动词。句意：我们不应该把拥有洁净的饮用水看作是理所当然的。也许有一天，我们会用完它。shouldn't“不应该”，符合句意。needn't不必；can't不可能；won't将不。故选D。
24．It turned out that the hotel was so near. I ______ the taxi.
A．needn't have taken B．must have taken C．should take D．could take
【答案】A
【解析】
【详解】
考查情态动词。句意：结果证明这家宾馆非常近。我本不必乘坐出租车。needn’t have done表示“本不必做某事实际上做了”，根据句意，旅馆很近不用乘坐出租车，但是乘车了。故选A。
25．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.
26．You _____ be right but I’m going back to check anyway.
A．should B．must C．need D．might
【答案】D
【解析】
【详解】
考查情态动词。句意：你或许是对的，但我还是要回去核对一下。A. should应该；B. must 一定，必须；C. need需要；D. might或许。本题主要考查情态动词表示推测的用法，由I’m going back to check anyway可知，我对此不确定。由此可知，D项符合题意。故选D项。
【点睛】
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。
(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。
二、 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。如本题，根据I’m going back to check anyway可知，我对此不确定。由此可知，D项符合题意。(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）。
三、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。
27．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。
28．If we had paid enough attention to the issue of the heavily-overloaded vehicles, the tragedy of the collapse of an overpass in Wuxi _____ avoided.
A．should B．could be C．should have been D．could have been 【答案】D
【解析】
【详解】
考查情态动词用法。句意：如果我们对超载车辆问题给予足够的重视，就可以避免无锡立交桥垮塌的悲剧。本句为“情态动词+have done”结构，结合句意表示“本来可以；本来能够”应用could have done结构，且主语与谓语动词avoid构成被动关系，故应用be done形式。故选D。
【点睛】
情态动词+have done的结构和用法有以下几种：
一、must have done sth.“一定做了某事”。表示对过去事情的较有把握的推测，这时只能用在肯定句中，“肯定/必须已经干过……”，在否定句和疑问句中用can’t或couldn’t或can/ could，例如：
1.From what you said, she must have told you all about it. 从你的话看，她一定告诉了你所有的事情。
二、can/could have done sth.本来能够做某事，而实际上未做；
1.But we could have done it all so much better. 但是，我们本可以把这一切做得更好。
三、can't/couldn't have done sth.不可能做过某事；
1. We could't have done it without you.
没有你我们办不成这事。
四、ought to/should have done sth.过去本应该做某事而实际上并没有做。
You should have done it when you first saw them blooming this spring. 你应该在今年春天第一次看到它们盛开的时候就挖一些的。
2.Even if it’s something you should have do ne earlier in the week or missed a detail on.
甚至你在一个星期前的就提早完成了一件事或者忽略了一个小细节。
29．Look! There are so many mistakes in your composition. You ________ have fixed full attention on it.
A．can B．should
C．need D．might
【答案】B
【解析】
【详解】
考查情态动词。句意：看！你的作文里有那么多的错误。你本应该把所有的注意力都集中在它上面的。表示“本应该做但实际上没有做”应该用should have done结构，can have done 表示可能；need表示需要；might have done表示可能做过某事；故选B。
30．Skills like critical thinking and analysis ________ be found on the Internet, because they must be acquired in the context of facts.
A．can’t B．needn’t C．mustn’t D．shouldn’t
【答案】A
【解析】
【详解】
考查情态动词词义辨析。句意：像批判性思维和分析这样的能力，是不能在互联网上找到的，因为它们必须基于事实来获得。A. can’t无法，不可能；B. needn’t不需要；C. mustn’t 不可以，禁止；D. shouldn’t不应该。本题讲的是这种批判性思维的能力无法通过浏览鱼龙混杂的网上信息获得，表达的是客观上的不可能，故选A。
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．-- Turn off the TV, Jack. _______ your homework now?
-- Mum, just ten more minutes, please.
A．Will you be doing B．Should you be doing
C．Shouldn't you be doing D．Couldn’t you be doing
【答案】C
【解析】
【详解】
考查含情态动词的进行时态。句意：——把电视关掉，杰克。你现在不应该做作业吗?——妈妈，请再给我十分钟。此处表示目前应该在做某事，should“应该”，这里用含情态动词的进行时态，故选C。
34．—I saw your uncle take a taxi to the airport. Why didn’t you drive him there?
—I __________. But my car ___________ .
A．would; was fixed B．would have; was fixed
C．would have; was being fixed D．did; was being fixed
【答案】C
【解析】
【详解】
考查虚拟语气和动词时态。句意：---我看见你叔叔坐出租车去机场了。你为什么不开车送他去那里呢？---我本来想送他了。但是我的汽车当时正在修理。根据语境可知说话人表示本来想做但是没有做的事情，应该用would have done；而修理汽车是指当他叔叔去机场的时候，表示过去正在进行的动作，故答案选C。
35．—______ 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。
36．They were abroad during the months when we were carrying out the investigation, or they __________to our help.
A．would have come B．could come
C．have come D．had come
【答案】A
【解析】
试题分析：本句考查的是一个含蓄的虚拟条件句，句中的or相当于if they had not gone abroad.因为前面句中使用的是were，说明这个虚拟语气是与过去事实相反，所以主句中使用的是“情态动词+have d one”的形式。句意：当我们在做调查的那几个月里，他们一直在国外，否则的话他们早就来帮助我们了。故A正确。
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.“c an / 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 use a clock to wake me up because at six o'clock each morning the train comes by my house.
A．couldn't B．mustn't
C．shouldn't D．needn't
【答案】D
【解析】
试题分析：考查情态动词辨析。A不可能；B禁止，千万不能；C不应该；D不需要；句意：我不需要使用闹钟叫醒我，因为每天早上六点都有一列火车经过我的家旁边。根据句意可知我不需要使用闹钟。故D正确。
考点：考查情态动词词义辨析
39．—How long shall we wait here?
—The first bus set out earlier than usual today and _____ be here any time, I think.
A．should B．might C．can D．must
【答案】A
【解析】
【详解】
考查情态动词表推测。句意：—我们要在这里等多久？—首班车比往常发车的时间早了，我推测可能会在任意时间到达。should 用于表示‘事实上的可能性’或者‘推测’，多用于肯定句。故选A。
40．One of the few things you ___ say about English people with certainty is that they talk a lot about the weather.
A．need B．must C．should D．can
【答案】D
【解析】
【详解】
考查情态动词的用法。句意：关于英国人你可以肯定的一点是他们谈论很多的天气。A. need需要；B. must必须；C. should表示责任和义务；D. can可以；能够。根据语境，故选D。
英语情态动词专项练习题及答案含答案解析
英语情态动词专项练习题及答案含答案解析 一、初中英语情态动词 1．— _______ you play tennis? —Yes, and I'm a good player. A. Can B. May C. Must D. Should 【答案】 A 【解析】【分析】句意：——你会打网球吗？——会，我是一名优秀的网球员。Can能，表示能力；may可以，表示允许；must必须，表示要求；should应该，表示建议；结合句意，此处表示能力，故用情态动词can，故选A。 【点评】此题考查情态动词的用法。 2．All passengers ______ go through safety check before they take a plane. A. can B. may C. must D. could 【答案】 C 【解析】【分析】句意：所有乘客登机前必须接受安全检查。A. can能够，表示能力；B. may可以，表示许可；C. must必须；D. could可能，可以。登机前必须安检。故选C。【点评】情态动词词义辨析。以及can、may、must、could四个词的词义和用法。 3．You be tired after walking for such a long time. Sit down and have a rest. A. can B. can't C. mustn't D. must 【答案】 D 【解析】【分析】句意：走了这么长时间你一定很累了。坐下休息一下吧。can能，能够，can't不能，对事物进行否定推测；mustn't一定不是，禁止，must一定，对事物进行肯定推测，根据after walking for such a long time，可以肯定你一定很累，所以是进行肯定推测，情态动词使用must，故选D。 【点评】此题考查情态动词。弄清每个情态动词的使用规则，根据句意确定所使用的情态动词。 4．—Where is Mom now? —I'm not sure. She _________ be in the kitchen. A. shall B. may C. need D. must 【答案】 B 【解析】【分析】句意：—妈妈现在在哪里？—我不确定，她也许在厨房。A. shall 将要； B. may 可以，可能； C. need 需要； D. must必须，一定；根据I'm not sure可知是不确定；故选B。 【点评】此题考查情态动词表推测的用法。 5．—Who it be that is knocking at the door? —It be father, but I'm not sure.
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
高考英语情态动词专题复习
情态动词精品学案 情态动词解读: ①本身有一定的词义，表示说话人的情绪、态度或语气的动词。 ②不能单独作谓语。 ③和其他动词原形构成谓语。 ④谓语动词之前。 ⑤无人称和数的变化。 ⑥否定式构成是在情态动词后面加“not”。 ⑦个别情态动词有现在式和过去式两种形式，过去式可以用来表达更加客气、委婉的语气，时态性不强，可用于过去，现在或 将来。 经典例句： We can be there on time tomorrow. 我们明天能按时去那儿。 May I have your name? 我能知道你的名字吗？ Shall we begin now? 我们现在就开始吗？ How dare you treat us like that! 你怎么敢那样对待我们! We can't carry the heavy box. 我们搬不动那箱子。 情态动词考点： 1.情态动词表示推测。 2.情态动词的基本用法。 3.情态动词的答语。 1 / 17
常见情态动词： 情态动词有can (could), may (might), must, have to, shall (should, will (would), dare (dared), need (needed), ought to等。 情态动词的基本用法： 一、can, could 1) 表示能力（体力、知识、技能）时，等于be able to 。 a)Can you lift this heavy box?（体力） b)Are you able to lift this heavy box? c)Mary can speak three languages.（知识） d)Is Mary able to speak three languages? e)Can you skate?（技能） 此时可用be able to代替。 2) can表示请求和允许。 -----Can I go now? ----- Yes, you can. / No, you can’t. 此时可与may互换。在疑问句中还可用could, might代替，不是过去式，只是语气更委婉，不能用于肯定句和答语中。（特别注明：这是在表示请求和允许的时候。） ---- Could I come to see you tomorrow? ---- Yes, you can. (No, I’m afraid not. ) can't在否定句中可以表示命令，不允许，但是语气比mustn't弱，具有劝慰的意思. 3)can表示“有时会”： A kind person can lose temper sometimes. 4）表示与五种感官和知觉的动词连用。 I can hear/ see you clearly from here. You can imagine how annoyed she was ! 2 / 17
高中英语情态动词讲解与练习(含答案)
高中英语语法之情态动词 （一）情态动词的定义：情态动词表示说话人对某一动作或状态的态度。 （二）情态动词的特点：1）有一定词义；2）不受主语人称和数的变化影响；3）与主要动词 的原形（或称不带to的不定式）一起构成谓语（除ought to作固定词组看待）。 情态动词无人称和数的变化, 情态动词后面跟的动词需用原形,否定式构成是在情态动词后面加"not"。个别情态动词有现在式和过去式两种形式, 过去式用来表达更加客气, 委婉的语气, 时态性不强, 可用于过去，现在或将来。情态动词属非及物动词，故没有被动语态。 He could be here soon. 他很快就来。We can't carry the heavy box. 我们搬不动那箱子。 I'm sorry I can't help you. 对不起，我帮不上你。 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 to 和used to看做是固定词组的话，那么，所有情态动词无一例外地只能接不带to的不定式：We used to grow beautiful roses. I asked if he would come and repair my television set. 2）情态助动词在限定动词词组总是位居第一：They need not have been punished so severely. 3）情态助动词用于第三人称单数现在时的时候，没有词形变化，即其词尾无-s形式： She dare not say what she thinks. 4）情态动词没有非限定形式，即没有不定式和分词形式，也没有相应的动名词： Still, she needn't have run away. 5）情态助动词的“时”的形式并不是时间区别的主要标志。在不少场合，情态助动词的现在 时和过去时形式都可以表示现在、过去或将来时间：Would you mind very much if I ask you to do something? She told him he ought not to have done it. 6）情态助动词之间是相互排斥的，即在一个限定动词词组中只能出现一个情态助动词，但 有时却可以与have和be基本助动词连用：You should have washed the wound. Well, you shouldn't be reading a novel. （三）情态动词有四类：①只做情态动词：must,can(could),may(might),ought to ②可做情态动词又可做实义动词：need,dare ③可做情态动词又可做助动词：shall(should),will(would) ④具有情态动词特征：have(had,has) to,used to ⑤情态动词表猜测 （四）情态动词的基本用法 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℃, that is 60℃ below freezing. 气温可降至—60℃，也就是零下60℃。 t) have enough money for a new car. 他不可能有足够的钱买新车。 He can′ t (couldn′ re walking around in the wood. You could start a fire. You mustn′ t smoke while you′
高考英语情态动词专项练习
高考英语情态动词专项练习 Ⅰ. 单项选择 1.I thought you______like something to read, so I have brought you some books. A. may B. might C. could D. must 2. You____to the meeting this afternoon if you have something important to do. A. needn't to come B. don't need come C. don't need coming D. needn't come 3. He______ you more help, even though he was very busy. A. might have given B. might give C. may have given D. may give 4.─_______I help you with some shoes, madam? ─ Yes, I would like to try on those brown ones. A. Will B. Should C. May D. Must 5. The reason why they ____leave wasn't explained to us. A. had B. had to C. must D. might 6. I searched for my wallet and it wasn't there. I thought I___it at home. A. left B. have left C. might have left D. could have left 7. I_____asleep because it took me a long time to realize that the telephone was ringing. A. could have fallen B. should have fallen C. must have fallen D. mustn't have fallen 8. The only thing that really matters to the children is how soon they ______return to their school. A. can B. must C. have to D. ought to 9. I want to go to the chemist's, but you _____go with me.
高中英语情态动词练习及答案
情态动词专项练习（一） 1. I __________ you, because I thought I must be wrong. A. dare not ask B. dare not to ask C. dare not asking D. dare to not ask 2. There __________ some flowers in the garden. A. were used to be B. used to be C. uses to be D. used to be having 3. ―__________ I take it out?‖―I′m sorry, you __________.‖ A. Could …couldn′t B. Might…might not C. Could…can D. May…can′t 4. You were stupid to climb the tree. You __________ hurt yourself. A. may B. might C. will D. might have 5. You __________ those letters. Why didn′t you ? A. should post B. should have posted C. must have posted D. ought to post. 6. All the lights are on, the Smiths __________ up. A. must get B. is getting C. must be getting D. would get 7. He __________ lead a horse to the water but he __________ not make it drink. A. will…can B. may…can C. may…dares D. dare…can 8. ―Need we do this job now?‖―Yes,__________.‖ A. you need B. you should C. you must D. you can 9. __________ to have lunch with us today? A. Do you likes B. Would you like C. Will you liked D. Have you liked 10. He said that you __________ watch TV all the evening if you wished. A. may B. must C. can D. might 11. –Is John coming by train? --He should, but he __________ not. He likes driving his car. A. must B. can C. need D. may 12. Peter __________ come with us tonight, but he isn′t very sure yet. A. must B. can C. may D. will 13. Michael __________ be a policeman, for he′s much too short. A. needn′t B. can′t C. shouldn′t D. won′t 14. I thought you __________ be hungry, so I have brought you some cakes. A. may B. might C. can D. could 15. I wonder how he __________ that to the teacher. A. dare to say B. dare saying C. not dare say D. dared say 16. Come on! We __________ hurry because there isn′t much time left. A. may B. must C. can D. need 17. Amy did best in the English test. She __________ hard last week. A. must have working B. should have worked C. should work D. must work 18. The fire spread through the hotel very quickly but everyone __________ get out. A. had to B. would C. could D. was able to 19. –--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 20. It′s nearly seven o′clock. Jack __________ be here at any moment. A. must B. need C. should D. can 专项练习（二） 1. Jean have kept his promise. I wonder why he changed his idea. A. must B. should C. need D. would
(2017-2019)高考英语真题专项汇编卷：知识点03情态动词和虚拟语气(含答案)
高考英语真题专项汇编卷（2017-2019）： 知识点03 情态动词和虚拟语气 1、The workers were not better organized, otherwise they ____________ the task in half the time. A. accomplished B. had accomplished C. would accomplish D. would have accomplished 2、What a pity! You missed the sightseeing, or we _________a good time together. A. had B. will have C. would have had D. had had 3、In today’s information age, the loss of data _________ cause serious problems for a company. A.need B.should C.can D.must 4、They might have found a better hotel if they _________ a few more kilometers. A.drove B.would drive C.were to drive D.had driven 5、I can’t find my purse. I___________ it in the supermarket yesterday, but I’m not sure. A.should leave B.must have left C.might leave D.could have left 6、If we ___________the flight yesterday, we would be enjoying our holiday on the beach now. A.had caught B.caught C.have caught D.would catch permission. 7、It’ｓ strange that he _______ have taken the books without the owner’ｓ A.would B.should C.could D.might 8、There is a good social life in the village, and I wish I _______ a second chance to become more involved. A.had B.will have C.would have had D.have had 9、My room is a mess, but I ___________ clean it before I go out tonight. I can do it in the morning. A.daren't B.shouldn't C.needn't D.mustn't 10、—Do you have Betty’s phone number? —Yes. Otherwise, I ___________ able to reach her yesterday. t have been A.hadn’t been B.wouldn’ C.weren’ｔ D.wouldn’t be 11、Samuel, the tallest boy in our class, ___________ easily reach the books on the top shelf.
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)
高中英语情态动词讲解
一、情态动词用法 1.情态动词的具体用法 A.能干can/could do; (经过努力)能干be able to (have the ability to do, be capable of doing) B.必须干/不得不干must / have to do; 不许干：mustn’t do C.(经允许)可以干may/ might do; 不可以干：may not do D.应该干should /ought to/ be to/ be supposed to do E.将要干will/would/shall do; (按法律，许诺，命令，威胁，第二三人称中) 将干shall do F.(某段具体时间)常干would do; (现在不做，过去常做) used to do G.宁愿做would rather do; 最好做had better do; 不妨做might as well do H.需要做need do ; 敢做dare do 2.情态动词表猜测 A.一定是must be ;一定已经干了某事must have done sth.; 一定不是can’t/couldn’t be ; 一定没干过某事can’t/couldn’t have done sth. B.可能（不）是may/might (not ) be; 可能已经（没）干某事may/might (not) have done sth. 3.情态动词与虚拟语气 A.本应该干某事（带有批评责备之意）should/ ought to have done sth.；本不该做了某事而做了shouldn’t /oughtn’t to have done sth B.本不必干某事needn’t have done sth. C.本可以干某事can/could have done sth. D.本（不会）干某事would (not) have done sth. E.真希望做过某事would like to have done sth. F.Should 在表建议的从句中： (a)It’s high time that sb. should do/did sth (b)It’s important sb. (should) do sth. (c)I suggest sb. (should ) do sth. 二、理解情态动词 Lucy is an outgoing lady. She can play many kinds of musical instruments. Actually, she could play the piano when she was 8 years old. Lucy also keeps taking exercise every day. She says that she has to do some sports because she must keep slim. “You shall get fat soon if you don’t take exercise every day.” She usually says to her friends. As for her, an elegant lady should try to keep fit. However, last week, she found that she might put on weight and she worried and decided to lose her weight. And these days she is always thinking that she may succeed soon if she tries all her best. However, she is always lack of time because she ought to take care of her children. One night after supper, she walked quickly in order to go dancing at the Tomorrow Park and she was late. On her way, she thought that the dancing must have
【英语】高三英语情态动词专项训练及答案及解析
【英语】高三英语情态动词专项训练及答案及解析 一、单项选择情态动词 1．It wasn’t right to me that such near neighbors not know one another. A．could B．would C．should D．might 【答案】C 【解析】 【详解】 考查情态动词。句意：对我来说，很不正常，如此近的邻居居然不认识。A. could可能，能够；B. would将；C. should竟然；D. might可能，也许。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"，住的这么近的邻居居然不认识。表示意外，所以答案选C。 【点睛】 should的用法 1、should 作为情态动词,通常用来表示现在或将来的责任或义务,译作“应该”、“应当”,这时它可以和 ought to, be supposed to 互换使用.例如：You should （= ought to ） tell your mother about it at once. 2、should 作为情态动词,可以用在条件状语从句中,表示语气较强的假设,译作“万一”、“竟然”,这时也可将 should 置于从句之首,即将 should 放在主语前面,而省略从属连词 if。例如：If you should fail to come, ask Mrs Chen to work in your place. （= Should you fail to come, ask Mrs Chen to work in your place. ） 3、should 作为情态动词,可以表示谦逊、客气、委婉之意,译为“可……”、“倒……”。例如：I should say that it would be better to try it again. 4、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.尤其在以 why, who, how 等开头的修辞疑问句或某些感叹句中常常译为“竟会”、“居然”。例如：How should I know it ? 我怎么会知道这件事? 5、should 作为情态动词,可以用来表示有较大可能实现的猜测、推论,通常译为“可能”、“总该……吧”,相当于 be expected to 。例如：They should be home by now, I think. 我想现在他们总该到家了吧。 6、should 作为情态动词,用在由 so that, for fear that, lest 引导的目的状语从句和 in case （that）引导的条件状语从句中,有“能够”、“可能”、“会”之意。例如：They got up early so that they should （= could/ might） catch the first bus in time. 7、should 作为情态动词,可以用于下列虚拟语气句中： (1）用在表示与将来事实相反的条件状语从句中,构成“ If …… should （do sth）……, …… would/ could/ might （do sth.）…… ”句式。 (2) 用在 suggest （propose）, arrange, plan, decide, advise, order, demand, request, desire, insist 等表示“建议”、“要求”、“命令”、“决定”、“安排”、“计划”、“主张”的动词后面接的宾语从句中。这里的 should 也可以省略。 本句中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，
高一英语情态动词专题复习
情态动词 情态动词是高考考查的重点语法项目之一，2005年全国17套高考试题对此都有考查。下面就近几年来高考试题中出现的情态动词的考点进行归纳分析，以便同学们复习掌握。 一、情态动词表推测 1. 肯定的推测一般用must, should, may（might）或could（不用can），其中，must的语气最强，译为“肯定”、“准是”、“想必是”；should的语气次之，译为“很可能”、“应该”，指按常理推测；may（might），could的语气最弱，译为“也许”、“可能”。 ①Helen _______ go on the trip with us but she isn’t quite sure yet. （2005年安徽卷） A. shall B. must C. may D. can ②—I’ve taken someone else’s green sweater by mistake. —It ___ Harry’s. He always wears green. （2005年广东卷） A. has to be B. will be C. mustn’t be D. could be ③I have lost one of my gloves. I _______ it somewhere.（2005年北京春季卷） A. must drop B. must have dropped C. must be dropping D. must have been dropped ④If I ____ plan to do anything I wanted to ,I’d like to go to Tibet and travel through as much of it as possible. （2005年湖北卷） A. would B. could C. had to D. ought to 2. 否定推测分为两种情况： 1）语气不很肯定时，常用may not, might not或could not，译为“可能不”、“也许不”。 You might just as well tell the manufacturer that male customers ______ not like the design of the furniture. （2004年上海春季卷） A. must B. shall C. may D. need 2）否定语气较强时，则用can’t，译为“根本不可能”、“想必不会”，表示惊异、怀疑的感情色彩。 ①—Do you know where David is? I couldn’t find him anywhere. —Well. He ______ have gone far——his coat’s still here.（2005年湖北卷） A. shouldn’t B. mustn’t C. can’t D. wouldn’t ②— Isn’t that Ann’s husband over there? — No, it _______ be him I’m sure he doesn’t wear glasses. （2004年全国卷Ⅰ） A. can’t B. must not C. won’t D. may not 3. 疑问句中的推测，往往用can或could。 Mr. Bush is on time for everything. How ______ it be that he was late for the opening ceremony？（2001年上海春季卷） A. can B. should C. may D. must 4. 对已发生事情的肯定推测常用“must, may, might等+完成式”；否定推测常用“can, could, may, might等+完成式”。 ①I was on the highway when this car went past followed by a police car. They _______ at least 150 kilometers an hour.（2005年重庆卷） A. should have been doing B. must have been doing C. could have done D. would have done ②He _______ have completed his work; otherwise, he wouldn’t be enjoying himself by seaside. （2005年北京卷）
高中英语情态动词的用法详解
高中英语情态动词用法归纳与练习 A: can / could = be able to 1 表示能力两种时态can (could)，其他时态要用be able to的形式 He can speak French. Was/were able to 可以表示成功做成某事的含义* managed to do / succeeded i n doing With our help, he was able to build the house. 2 表示请求或许可Could 比Can 更加客气* may Can I go now? Yes, you can. 3 表示推测或可能性，常用于否定句和疑问句 Can he be at school? Today is Sunday. He can't be at school. Can’t couldn’t/ Can ? Could? have done There is no light in the room. Can she have gone to bed? She can’t have gone to school----- it’s Sunda y. Could have done 可用在肯定句中表示过去存在的可能性* may have done She could have gone out with some friends yesterday. Could have done 可以表示虚拟语气 某事可能发生（并没有发生） It was silly to throw the TV out of the window. It could have hit somebody. 批评某人没有完成某事(本可以做某事) You are late again. You could have got up earlier. 4 can 表示客观上的可能性* Anybody can make mistakes. B: may and might 1 表示请求和允许类似用法can could(更加口语化) May I watch TV now? Yes, you may. 2 表示可能性; 猜测might比may更加不确定may/might have done 对过去的揣测* He may be busy these days. May not 可能不；不可能；一定不可 3 表示祝愿Wish you success! May you succeed!* C: must and have to 1 表示必须；一定要可以用have to 代替 must 现在；将来的必须而且是主观看法* have to 有多种时态而且强调客观情况 I really must stop smoking now. I had to leave early because I wasn’t feeling well. Must I come here?