chim mo ket âm nhạc 2 nguyễn thơ văn thư viện tư liệu giáo dục

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<b>MODAL VERB + PERFECT</b>

<i><b>I. FORM </b></i>

Chú ý: Sau động từ khiếm khuyết luôn luôn là một động từ nguyên mẫu (bare-inf)

<i><b>1. Could/ May/ Might + perfect:</b><b>có thể là</b></i>

Dùng để chỉ một tiên đoán trong quá khứ nhưng khơng có cơ sở. Những động từ khiếm khuyết này đều
mang nghĩa hiện tại.

Eg: - It may have rained last night, but I am not sure.
- The cause of death could have been bacteria.
- John might have gone to the movies yesterday.

<i><b>2. Must + Perfect</b></i>: Dùng để nói về một tiên đoán xảy ra trong quá khứ nhưng dựa trên những cơ sở rõ ràng
Eg: - I have lost one of my gloves. I must have dropped it somewhere.

- My wacth says only ten past six. It must have stopped.

<i><b>3. Should (not) + Perfect</b></i>: Nên (không nên) làm một việc gì đó trong q khứ
- You shouldn’t have come to school late.

- We didn’t play very well. We should have played better.
Chú ý: Có thể thay <b>should = ought to</b>

<i><b>4. Need(not) + Perfect</b></i>: Cần hoặc không cần làm điều gì trong quá khứ.
Eg: - You needn’t have bought her such a precious present.

- We needn’t have gone to the supermarket. There’s enough food at home.

<i><b>5. Would rather + Perfect</b></i>: Ước muốn đã không xảy ra trong quá khứ

Eg: - The film at the cinema was boring. I would rather have stayed home to watch TV.

- He studied French at schoo; only because his parents wanted him. He would rather have studied English.

<i><b>II. EXERCISE</b></i>
<i><b>Exercise 1</b></i>. Multiple choice:

1. When my father was young, he ……….. work in the garden for long hours.
A. can B. could C. will D. should
2. He ……….. have committed the crime because he was with mw all day.

A. mustn’t B. shouldn’t C. won’t D. couldn’t
3. Since we have to be there by 8.30, we ……….. take a taxi.

A. had better B. may C. could D. are able to
4. It ……….. rain this afternoon. Why don’t you take an umbrella?

A. could be B. must C. might D. had better
5. ……….. you help me with the homework?

A. May B. Shall C. Should D. Will
6. She hasn’t eaten anything since yesterday. She ……….. be very hungry.
A. might B. will C. must D. can
7. I put my keys on the table, but noe it’s gone. Someone ……….. have taken it.

A. had to B. may C. should D. would rather

8. Daisy is reading her English text because she has a test tomorrow. She ……….. be studying.
A. will B. should C. must D. can

9. We ……….. put the fish in the fridge before it boils.

A. had to B. can C. may D. had better
10. Mr. Brown is very rich. He ……….. work hard for a living.

A. mustn’t B. shouldn’t C. can’t D. doesn’t have to
11. Tom has just got a new job. He ……….. be very pleased.

A. migh B. must C. should D. will

12. Tom painted his room black. It looks dark and dready. He ……….. have chosen another color.
A. should B. must C. could D. may

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13. ……….. you carry this bag for me?

A. May B. Should C. Will D. Shall
14. You ……….. throw litter on the street.

A. mustn’t B. couldn’t C. needn’t D. won’t
15. Look at those black clouds. It ……….. rain soon.

A. may B. might C. will D. is going to

<i><b>Exercise 2</b></i>: Put the verbs in the brackets in the correct form.
1. If I had a bike, I ……….. (ride) it every day.

2. George ……….. (go) on a trip to Chicago if he had had a time.

3. Marcella didn’t come to class yesterday. She ……….. (have) an accident.

4. John didn’t do his homework, so the teacher became very angry. John ……….. (do) his homework.
5. Sharon was suppoted to be here at nine oc’lock. She ……….. (forget) about out meeting.

6. Where do you think Jane is today? She ……….. (sleep) late.
7. George missed the class today. He ……….. (have) an accident
8. Robert arrived without his book. He ……….. (loose) it.

9. Thomas received a warn ing for speeding. He ………..(drive) so fast.
10. Henry’s car stopped on the highway. It ……….. (run) out of gas.

<i><b>Exercise 3</b></i>: Rewrite the following sentences, using the modal verb in the bracket.
1. It was a mistake not to bring your umbrella. (should)



……….
2. I can imagine how worried Tom’s father was. (must)



……….
3. It is possible that one of the men died on the mountain. (may)



……….
4. It wasn’t necessary for you to do all this work. (needn’t)



……….
5. It was a mistake for you to buy that house. (shouldn’t)



……….
6. I don’t think Sally enjoyed her holiday. (can’t)



……….
7. Perhaps Alan didn’t mean what he said. (mightn’t)



……….
8. It was the driver’s fault. He didn’t stop at the red light. (should)



……….
9. It’s possible that I left my wallet at home. (could)



……….
10. Perhaps he spent all his money when he was young. (might)



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