情态动词的综合运用和难点分析

may / might have done She may have been there. Yesterday, Jane walked away from the discussion. Otherwise, she might have said something she would regret later.
could和was/were able tng
manage to do I talked for a long time, and in the end I _______ make a discount of 10% off the price. In the big fire, we _____________ escape from the burning building.
表示习惯 My grandmother will often say something and then forget what she has said.
He would never let anybody know what he was doing when he stayed in that house.
may/might as well do sth 还是…的好 We’ve got lost. We might as well stay where we are.
should 与ought to
shouldn’t be There _______________ be any difficulty about passing the road test since you have practised a lot in the driving school.
Auxiliary and Modal Verb
情态动词是英语中较难把握的一类动 词，也是每年高考必考的内容。纵观 近几年高考试题可以发现，命题者常 借助语境和句子之间意义的细微差别 来考查学生对情态动词常规用法的理 解和掌握。
can与 could 的用法：
1. 表“能力” If it were not for the fact that she couldn’t sing, I would invite her _________ to the party.
should / ought to have done
I told your friend how to get to the hotel, but perhaps I should have driven her there. The awards should have been delivered by now since the results of the singing contest were published last Friday.
can / could have done I could have come here earlier, but I had an unexpected visitor.
needn’t have done
—The weather turned out to be fine yesterday. —I needn’t have taken the trouble to carry my umbrella with me.
How should I know it?
Why should you be so late today? I don’t know why you should think that I did it.
will与would 的用法
表示意愿
Will you join us in window-shopping? If you will listen, I will give you some good advice. If they won’t accept a cheque, we’ll have to pay cash. He asked me if I would have a look at his collections.
would rather not do
Reading the language points in the book.
We needn’t have borrowed so many chairs ---- only half of the people came because of the heavy rain.
should be doing
had better do
had better not do would rather do
否定mustn’t do You mustn’t drive so fast. There is a speed limit here. Must I switch off my mobile phone? No, you needn’t/don’t have to.
2. 表示推测 There must be something wrong with the scanner----it doesn’t work properly, but what can the problem be?
need和dare
needn’t do don’t need to do dare not do don’t dare (to) do
I __________________ tell my parents what has happened.
情态动词 + have done的用法
must have done
should ：居然
I’m terribly sorry that they should think I did it on purpose. I was shocked that she should have done a thing like that.
should与 why, how, who, what 连用， 表示“拒绝、恼怒或惊 讶”。
You direction shall be attended to.
You shall get a present if you do well in the next exam.
must的用法
1. 表示必须 According to the local regulation, anyone who intends to get a driver’s license must take on an eye test.
2. 在肯定句中，表理论上的“可能” 或某物具有的特征。 A Some aspects of a pilot’s job _____ be boring, and pilots often _____ work at inconvenient hours. A.can; have to B. may; can C. have to; may D. ought to; must
may和might
1.may / might表示“可能”。may 比might的可能性大。 Helen may go on the trip with us, but she isn’t quite sure yet.
2. may / might 用于疑问句中， 用 来征求对方的意见，“是否允 许”。might比may 更婉转，此 时相当于can。 —May / Might I call you by your first name? —Yes, you can/may.
—Where is my dictionary? I remember I put it here yesterday.
—You ________ it in the wrong place.
The investigators decided that the passengers must have been killed on the airliner ____________________ (kill) at the very moment of the crash. 否定: can’t/couldn’t have done 表示不可能
shall 的用法
1.shall用于（一、三人称）在疑 问句中，常用来征求对方意见。
—What’s the name? —Barrette. Shall I spell that for you?
2. shall （用于第二第三人称表示 说话者的允诺、警告、命令）
The new regulation shall take effect on September 1st in cities all over the country.