SUBJECT + TO HAVE + PAST PARTICIPLE
They have studied hard.
They haven’t studied hard.
Have they studied hard?
USE
Recent changes.
She has painted the house.
Actions in a period of time that hasn’t finished.
This month Tom has bought a new bicycle.
Past experiences in our life we don’t mention a specific time.
I have travelled to Italy.
EXPRESSIONS
EVER (at any time)
Have you ever visited London?
NEVER (no time)
She has never written a book.
EXERCISES
