人教版高二英语必修三Unit2-grammar

--- Must I finish all assignments at a time? ---Yes, you must. / No, you needn't. I don’t like this TV set. We must buy a new one. There was no more bus. They had to walk home.
Shall we set off now? You shall do as I say. Tell him that he shall have the book tomorrow. You shall be punished if you do that again. You shouldn’t /oughtn’t to smoke so much. She shouldn’t have left without saying a word. It’s five o’clock. John should be at home now. We have prepared a fridge of food and drinks. That ought to be enough for the party. It’s a pity that he should be so rude to a lady.
Exercises
1. A computer ___A___ think for itself; it must
be told what to do.
A. can’t
B. couldn’t
C. may not
D. might not
2. The fire spread through the hotel very quickly
7. You ___C___ return the book now. You can
keep it till next week if you like.
A. can’t B. mustn’t C. needn’t D. may not
8. Johnny, you ___B___ play with the knife, you
can, may, will. 3 can 用于肯定句中, 可表示”有时可能”
---May I use your pencil? ---Yes, you may. / No, you mustn’t.
She may not be working now. John might be at home now. Helen may go on the trip with us, but she isn’t very sure yet.
人教版高二英语必修三Unit2-grammar
Learning aims
1.To continue to learn modal verbs.
2.To learn its usages.
3.To be able to put them into practice.
Modal Verb
情态动词有一定的意义，但没有人称和 数的变化，不能独立使用，它和后面的动词 构成谓语．除ought 和have 外，后面只能接 不带to 的不定式。
She may / might have read it in the paper.
He may not have finished reading the book.
Will you tell me something about your hometown?
Would you please speak again more slowly？
but everyone __D____ get out.
A. had to
B. would
C. could
D. was able to
4. That big cinema __A____ seat 2,000 people.
A. can B. should C. ought to D. is able to 5. — Could I borrow your dictionary?
______ hurt yourself.
ห้องสมุดไป่ตู้
A. won’t ; can’t
If you will help me with my English, I will be very happy. I promised that I would do my best. He will always take a walk after supper. During the vacation he would often visit me.
— Yes, of course you __C_____. A. might B. will C. can D. should 6. — Might I watch TV after supper? — Yes, you ___A_____. A. may B. must C. might D. can
只作情态动词的 can / could, may /
might, ought to, must 可情态可实义的 need, dare 可情态可助动词的 shall / should, will /
would 相当于情态动词的 have to, had better
1表示某人通过努力克服困难做成某事,要用was / were able to. 2 could, might, would 表委婉语气用于疑问句, 答语仍须用
You must be the new teacher. There is nobody here. They must have all gone home. My MP4 isn’t in my bag. Where can I have put it? John, look at the time. Must you play the piano at such a late hour?