Modal Verbs Practice: Sentence Transformation and Usage

Modal Verb Sentence Examples

1. She may have left her keys at home.
2. He can solve complex math problems easily.
3. You needn't have bought a gift.
4. They must have misunderstood the instructions.
5. We may use calculators during the exam.
6. I shouldn't have spoken to her like that.
7. He might not have heard the alarm this morning.
8. She can play the piano beautifully.
9. They didn't have to wait for us.
10. She must have completed the project by now.
11. They might have missed the train.
12. He had to finish the report by Friday.
13. We shouldn't have ignored his advice.
14. She could speak three languages fluently.
15. You needn't have called me so late.
16. They might not have received our message.
17. He must have known about the meeting.
18. We may leave early today.
19. I shouldn't have forgotten her birthday.
20. He could have won the competition.

Modal Verb Transformation Exercises

1. It's possible that she left her keys at home. (may)
   She may have left her keys at home.
2. He is able to solve complex math problems easily. (can)
   He can solve complex math problems easily.
3. It wasn't necessary for you to buy a gift. (needn't)
   You needn't have bought a gift.
4. I'm sure they misunderstood the instructions. (must)
   They must have misunderstood the instructions.
5. We are allowed to use calculators during the exam. (may)
   We may use calculators during the exam.
6. It was wrong of me to speak to her like that. (shouldn't)
   I shouldn't have spoken to her like that.
7. Perhaps he didn't hear the alarm this morning. (might not)
   He might not have heard the alarm this morning.
8. She knows how to play the piano beautifully. (can)
   She can play the piano beautifully.
9. It was unnecessary for them to wait for us. (didn't have to)
   They didn't have to wait for us.
10. I'm certain she has completed the project by now. (must)
    She must have completed the project by now.
11. It's possible that they missed the train.
    They might / may / could have missed the train.
12. He was obliged to finish the report by Friday.
    He had to finish the report by Friday.
13. It was a mistake for us to ignore his advice.
    We shouldn't have ignored his advice.
14. She had the ability to speak three languages fluently.
    She could speak three languages fluently. She was able to speak three languages fluently.
15. It wasn't necessary for you to call me so late.
    You didn't have to call me so late. You needn't have called me so late. You didn't need to have called me so late.
16. Perhaps they didn't receive our message.
    They might not have received our message.
17. I'm certain he knew about the meeting.
    He must have known about the meeting.
18. We are permitted to leave early today.
    We may leave early today.
19. It was wrong of me to forget her birthday.
    I shouldn't have forgotten her birthday.
20. He had the capability to win the competition.
    He could win the competition. He was able to win the competition.