Viết lại câu với Modal verb (động từ khuyết thiếu)

Động từ khuyết thiếu (Modal verb) hay còn được gọi là động từ khiếm khuyết, là một loại động từ được sử dụng để bổ nghĩa cho động từ chính bày tỏ khả năng, sự chắc chắn, sự cho phép, nghĩa vụ, cần thiết, dự đoán hoặc yêu cầu,v.v… Nếu bạn lần đầu tiên tìm hiểu về động từ khuyến thiếu thì bài viết này sẽ giúp bạn nắm chắc kiến thức đó.

Cấu trúc của modal verb

Modal verb

1. Thì hiện tại và thì tương lai

  • Khẳng định (+): S + modal verbs + V-inf
  • Phủ định (-): S + modal verbs + not + have + V-inf
  • Nghi vấn (?): Modal verbs + S + V-inf?

2. Thì quá khứ

  • Khẳng đinh (+): S + modal verbs + have + V3/ed
  • Phủ định (-): S + modal verbs + not + have + V3/ed
  • Nghi vấn (?): Modal verbs + S + have + V3/ed?

Cách sử dụng modal verbs

  • Must (phải): Nghĩa vụ phải tuân thủ, kết quả logic/chắc chắn
  • Must not (không được): Ngăn cấm.
  • Can (có thể): Có khả năng, sự cho phép, khả năng.
  • Could (có thể): Có khả năng trong quá khứ.
  • May (có thể): Sự cho phép, có khả năng xảy ra.
  • Might (có thể): Cho phép một cách lịch sự, có khả năng xảy ra.
  • Need not (không cần): Không cần thiết, không liên quan đến nghĩa vụ.
  • Should (nên)/ought to (phải): Một phần nghĩa vụ, lời khuyên, kết quả logic

Bài tập viết lại câu với modal verb

Bài 1:

1. ____ you swim when you were 10?

2. We ____ get to the meeting on time yesterday, because the train was delayed by one hour.

3. He ____ arrive at the party on time, even after missing the train, so he was very pleased.

4. He’s amazing, he ____ speak five languages, including Chinese.

5. I ____ drive a car until I was 34. Then I moved to the countryside, so I had to learn..

6. I looked everywhere for my glasses but I ____ find them anywhere.

7. I searched for your house for ages. luckily I ____ find it in the end.

8. She’s seven years old, but she ____ read yet. Her parents are getting her extra lessons.

9. I read the book three times, but I ____ understand it.

10. James ____ speak Japanese when he lived in Japan, but he’s forgotten most of it now.

11. I ____ understand the chapter we had to read for homework. It was so difficult.

12. I ____ lift this box – it’s too heavy! Would you help me?

13. Lucy ____ make it to our meeting after all. She’s stuck in traffic.

14. John ____ play tennis really well. He’s champion of his club.

15. Unfortunately, I really ____ sing at all. No-one in my family is musical either..

16. When the car broke down I was really pleased because I ____ solve the problem.

17. Julian ____ play excellent golf when he was only ten.

18. My grandmother ____ use a computer until last month. Since then she’s been taking lessons at the library.

19. I ____ open this window! I think it’s stuck.

20. Gill ____ play the piano. She has never studied it.

Bài 2:

1. You (must) ____ get up early tomorrow.

2. You (not/need) ____ call a baby sitter.

3. We (may) ____ watch the film tonight.

4. He (not/can) ____ see me yesterday.

5. She (must) ____ stay at school yesterday afternoon.

6. (may/you) ____ go to the disco yesterday?

7. He (not/must) ____ sleep now.

8. You (not/need) ____ answer.

9. He (ought to) ____ give evidence at the court yesterday.

10. Since he bought the new car he (not/can) ____ sleep.

Bài 3:

1. It’s very cold today. Do you think it ____ snow later?

2. You ____ leave your door unlocked when you go out.

3. They ____ have filled the car with petrol before they set off.

4. My motorbike broke down in the middle of nowhere, but luckily I ____ to fix it.

5. Mum says we ____ watch TV after we’ve finished our homework.

6. You don’t ____ pick me up at the station. I can get a taxi.

7. This is impossible, it ____ be a mistake!

8. Jim ____ have seen me because he walked past without saying ‘Hello’.

Đáp án

Bài 1:

1. Could

2. couldn’t

3. was able to

4. can

5. couldn’t

6. couldn’t

7. was able to

8. can’t

9. couldn’t

10. could

11. couldn’t

12. can’t

13. can’t

14. can

15. can’t

16. was able to

17. could

18. couldn’t

19. can’t

20. can’t

Bài 2:

1. must

2. need not

3. may

4. could not

5. had to

6. Were you allowed to

7. must not

8. need not

9. was supposed to

10. has not been able to

Bài 3:

1. might

2. shouldn’t

3. ought to

4. was able

5. can

6. have to

7. must

8. couldn’t

Bài viết này mình đã chia sẻ cho bạn kiến thức về động từ khuyến thiếu – modal verb và bài tập có đáp án. Bạn hãy học và thực hành để nắm chắc kiến thức sử dụng trong các bài thi tiếng Anh nhé!

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