人教版高一下英语情态动词强化
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高一必修英语下册情态动词强化过关
高考考查知识点：
Modal Verbs 1
•had better
•should
•ought to
had better:
•had better 固定词组，意为“最好”，常用一般式。
E.g 1.You’d better get some rest.
2. We’d better stop now.
3. You better say yes if they ask you this question.(有时可以省略had) should :
•should 表义务，意为“应该”、“应当”。
• E.g１、You should do what your parents tell you.
•２、He should look for a job, but he doesn’t want to.
•３、How should I know?
•４、I suggest that you should stay here till your teacher comes.
should （考点1）
•should 用于完成时中的肯定句(should +have+ done )，表本该做而未做的动作。
E.g 1. He looks so ill. He should have stayed at home.
•should 用于完成时中的否定句（shouldn’t +have +done），表本不应该做而做了的动作。
E.g 1. They shouldn’t have left the classroom.
EX. With so much work on hand, you ____to see the game last night. ( ) A.mustn’t go B shouldn’t go C.could have gone D.shouldn’t have gone should （考点2）
•should 表推测时，暗含可能性很大。
The film should be very good because it has first-class actors.
•☆should 可用在某些从句中，表虚拟语气。（本期将会深入介绍）
1、I suggest that you (should) obey the rules in your new company.
2、I advise that you finish your homework without any help from your classmates.
ought to：
•ought to 用于表"想必会"、“应该”(语气比should 强，但较must 弱)：1. They ought to be there by now.
他们想必已到那儿了。
2.He ought to stop smoking.
他最好不要抽烟了。
•多数情况下，ought to可与should互换使用。
•☆ought to的反意疑问句用shouldn’t替代。
EX. You ought to have helped him with his English, ________ you ?
A. won’t you
B. ought not you
C. shouldn’t you
D. wouldn’t you
比较had better, should & ought to
•三者均表建议，意为“应该”，“应当”或“最好做…”.
•三者的语气程度为渐强。
•had better指一般性建议，最弱。
•should&ought to含义相近，常可互换。区别在于，☆ought to常指特殊情况下的“应当”。should则指一般情况。
Eg:1、You ought to help him because he is in trouble now.(语气强，有命令意味。)
2、You should have a rest after finishing your sports.（一般性建议）
3、You ought to call the police when you find something wrong in your
house.
4、He should take care of the babies tonight.
Modal Verbs 2
•must
•can/could
•may/might
must:
•must
• 1. 表义务，意为“必须”。（主观意志）
Eg:1. We must do everything step by step.
2. Being a student, you must try your best to pass the exams.
3. You are an adult, you must take the responsibilities to your behaviors.
4. I must go now as my boyfriend is waiting for me outside.
must （考点1）
Must we hand in our homework now?
--No, you needn’t./ No, you don’t have to.
•对must的问句，肯定回答用must或have to, 而否定回答一般不用mustn’t，因为m ustn’t表示禁止，用needn’t或don’t have to，意思是“不必”。
1. In the classroom, you must not smoke.
2. --Must I leave now?
--No, you needn’t. / No, you don’t have to.
must （考点2）
• 2. must 表推断或揣测。意为“想必，一定，准是。” 且只用于肯定句。
Eg: 1. He must be ill, because he looks so pale.
2.You must be tired after your long walking.
3.Look! He is driving such a good car, he must have earned a large
amount of money abroad.
4.It must have rained last night, for the ground is wet.