Rewrite each of the following sentences using a modal auxiliary verb.

1. Possibly she isn’t John’s sister.

2. Perhaps we will visit them next week.

3. She was able to read when she was two years old.

4. It is important that you do not disclose this to anyone.

5. It is not necessary for you to wait any longer.

6. I am certain that they have already left.

7. When I was in Bangalore, I used to go for a walk every evening.

8. Perhaps he forgot to post the letter.

9. I suggest going for a long drive.

10. Nobody has answered the phone; perhaps they have gone out.

11. I am sure he is over sixty.

12. It was not necessary for me to meet him, but I did.

Answers

1. She may not be John’s sister.

2. We may visit them next week.

3. She could read when she was two years old.

4. You must not disclose this to anyone.

5. You need not wait any longer.

6. They must have already  left.

7. When I was in Bangalore, I would go for a walk every evening.

8. He may have / might have forgotten to post the letter.

9. Shall we go for a long drive?

10. Nobody has answered the phone; they must have gone out.

11. He must be over sixty.

12. I needn’t have met him.