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?

i have worked hard to improve my english. joan does not have to go.she can stay here.i am sorry i am late.i had to do the shopping.i think the spacemen have to know english.does she have to read this rule.tom does not have to use the computer. you have to know english to understand people.does mary have to help ann to study english.what time do you have to get up.does your teacher have to correct your homework.

у глаголов в прошедшем времени окончания ed