We have been to the South this year.
Have you been to the South this year?
Yes, I have. No, I haven’t.
I haven’t been to the South yet.
I haven’t seen him since 1996.
Have you bought this dictionary or taken it from the library?
I have bought it this week.
Where have you bought it?
I have bought it at the book shop in the center of the city.
Who has seen this performance? I have (she, he has)