PRESENT PERFECT Positives, Negatives and QuestionsWrite 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 homework4. They met the president5. No, we didn't6. Did Roberto visit Vancouver27. Yes, he did8. Mrs. Smith didn't read the book.9. He was a teacher10. 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?

1) You have been behaving like this ever since I first came here.
2) When were you in London?
3) The thing is that I have come to have a talk.
4) Have you been waiting long? Did you wait long?
5) Most of the children here have already had measles .
6) She finished cleaning the bathroom, then she began peeling potatoes.
7) She has never had the slightest desire to be an actress.
8) He has been looking forward to it all the week.
9) They left just a week ago.
10) I have been thinking about nothing else since then.

1. I often invite people to my home.

I invited people to my home last Sunday.

I'm inviting people to my home now.

2. My granny makes delicious cakes.

My granny made a delicious cake on my birthday.

My granny is making a delicious cake now.

3. He doesn't send cards to people.

He didn't send cards to people last year.

He isn't sending cards now.

4. Anastasia stays up late.

Anastasia stayed up late last evening.

Anastasia is staying up late now.

5. My sister visits relatives very often.

My sister visited relatives last month.

My sister is visiting relatives now.

6. My father usually buys flowers for my mother.

My father bought flowers for my mother yesterday.

My father is buying flowers for my mother now.