浅论情态情态动词用法小结

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(高考常考情态动词的用法)
情态动词是高考命题的重点和热点,情态动词的用法有很多。我们只有抓住重点,再把面铺开,才可以准确而又迅速地把题做对。下面我把一些情态动词的常考用法总结如下:

一、 Shall

1,用于第二,三人称,并用于陈述句。表示命令,许诺,警告,强制,威胁,决心等。比如:You shall fail if you don’t work harder. He shall he the book when I finish reading.
例题:-------Will you read me a story ,Mummy?
-------OK,You___________he one if you go to bed as soon as possible.(2011年陕西,24)A mightB mustC couldD shallshall 在此表示允许,选D.
2, 用于一,三人称的疑问句中,用于征求对方意见。比如:Shall he come to see you?Shall I help you carry the box?

二、Will

1 表决心,意愿。I will never do that again. I will do my best to help you.
2, 表功能 , 能,行。The door won’t open. The machine won’t work. Would不仅仅表示是will的过去式,还表示 过去常常做某事。比如When my parents were away, my grandmother would take care of me.
三,May
1, may as well (最好做某事)You ma摘自:毕业论文任务书www.618jyw.com
y as well buy a cheaper one .
2,may I …..?肯定回答:Yes, youmay.否定回答:No, you mustn’t/may not/had better not.
3, 表推测。用在肯定句或否定句中(may not 可能不) He may be very busy now.He may not come today.
-------I didn’t see Mary at the meeting yesterday.
-----She might he been ill .I guess.
请问: 此might 能否换成may?正确答案:可以。有的学生回答不能,问其原因: 因为是对过去的推测。对过去的推测结构是 情态动词+he+done 不体现在may, might上,May 的语气比might 语气强。并不是might 表示对过去推测。
5, If I had had time yesterday, I might he gone with you..
请问: 此might 能否换成may?正确答案:不可以。虚拟和推测不是一回事,虚拟中常用情态动词有would, should, could, might.不会出现 may, can ,must .

四、Must

1,表禁止(否定句中)You mustn’t oke here.
2,表偏执, 固执,偏要。
Why must you make so much noise?
If you ______oke, please go outside. (2011年全国,8)
A canB shouldC mustD may must 用于条件句中,表示非要,偏要。正确答案是C
3,------Must we hand in our homework?
------ yes, you must
------No, you needn’t.
4, 表推测。用于肯定句中。
Must +动词原形
Must+ be+ doing(对现在正在发生事情的推测)
Must +he +done(对过去发生情况的推测)

五、Should

1, 理应 His plane took off 2 hours ago, and it should reach at 5 pm.
2, 竟然,居然。It is a pity that you should fail again in the exam.
3, suggest 以及相类似的词,后跟从句用should+动词原形
4, should he done shouldn’t he done
They ________he arrived at lunchtime but their flight wasdelayed . (2011年全国,32)
A will B can C must D should 正确答案D
六,Can
1, 用于固定结构中,can’t ….. too,,can never …….too
2,表推测, 用于否定句(不可能)或疑问句中。
有时也用在肯定句中,表示一时,偶尔的可能性,经常和sometimes 或at times 连用。
Don’t play with the dog, Jack ,,for it can be dangerous at times.
3, The street is all dry, It couldn’t he rained last night.
问: 此couldn’t 可以换成can’t 么?
答:可以。此句表推测,只是can’t语气比couldn’t强。
4, If he had had been here then, we could he asked him about it
问: 此could 可以换成can 么?
答:不可以。此句是虚拟语气。虚拟语气中常用的情态动词是would, should, could, might.

七、含有“责备”意义的 “情态动词 +he+ done”的结构

1,Should +he+ done,
2,Shouldn’t+ he+ done
3,Might+ he+ done
You might he given him more help, though you were busy.,
以上是情态动词的常考地方,但是希望大家不要拘泥于这些。我们一定在把握重点,热点的前提下,把面铺开。只有这样,我们才能在高考中游刃有余。
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