高考情态动词易错题集锦一、单项选择情态动词1．What a pity! Considering his ability and experience, he ___________ it better.A．need have done B．must have doneC．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。
2．Using AI， many companies are now conducting experiments that__________ possible just a few years ago．A．would have been B．might have beenC．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．Ann said whenever her father was unhappy he ________ go out and buy something, usually something large and useless.A．should B．couldC．would D．might【答案】C【解析】【详解】考查情态动词。
句意：安说无论什么时候她父亲不高兴的时候，他就会出去买些东西，通常是一些又大又没用的东西。
A. should应该；B. could能；C. would总是，愿意；D. might可能。
此处表示过去经常习惯做某事，故选C。
4．It has been announced that all the candidates ___________ remain in their seats until all the papers have been collected.A．shall B．couldC．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。
5．— 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。
6．-- Turn off the TV, Jack. _______ your homework now?-- Mum, just ten more minutes, please.A．Will you be doing B．Should you be doingC．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。
7．---He was satisfied with the result, wasn't he?---No. It was so difficult that he __________have passed it.A．shouldn't B．mustn'tC．couldn' t D．wouldn't【答案】C【解析】【详解】考查情态动词。
A. shouldn't 不应该；B. mustn't禁止，不允许；C. couldn' t 不可能；D. wouldn't不会。
句意：---他对结果很满意，是吗? ---不。
考试太难了，他不可能通过。
固定结构：couldn' t have done“不可能做某事”，此处是对过去事情有把握的否定推测。
故选C。
【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.8．I often felt troubled in my teens and my grandma ________ comfort me, saying “Life is like that, dear”.A．would B．might C．should D．must【答案】A【解析】【详解】考查情态动词。
句意：在我十几岁的时候，我经常感到烦恼，我的奶奶会安慰我说，“生活就是这样，亲爱的”。
此处是would+动词原形，表示“过去总是做某事”。
故选A。
9．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。