PRESENT PERFECT Positives, Negatives and Questions
Write the sentences below in the present perfect tense.
1. I saw a penguin. I have seen a penguin.
2. Did they eat breakfast? Have they eaten breakfast?
3. Jennifer didn't finish her homework
4. They met the president
5. No, we didn't
6. Did Roberto visit Vancouver2
7. Yes, he did
8. Mrs. Smith didn't read the book.
9. He was a teacher
10. Were you in jail?​

3. Jennifer didn't finish her homework. Jennifer hadn’t finished her homework.

4. They met the president. They have met the president.

5. No, we didn't. No, we haven’t.

6. Did Roberto visit Vancouver? Has Roberto visited Vancouver?

7. Yes, he did. Yes, he has.

8. Mrs. Smith didn't read the book. Mrs. Smith hasn’t read the book.

9. He was a teacher. He has been a teacher.

10. Were you in jail?​ Have you been in jail?