Life Experience
Present Perfect
Use the present perfect when speaking about an experience that has happened before the present moment when the time of the event remains unspecified.
Example:
Have you visited the reservation desk?
They haven't had the chance to hire a busser in that restaurant.
They've requested wake-up calls in hotels all around the world.
In this case, the present perfect is used to express an experience without giving precise details. Whenever you speak about something that has happened up to now without giving a precise point in time, use the present perfect.
Positive Form:
I've travelled on fourteen major highways in the United States.
Negative Form:
They haven't had the chance to hire a busser in that restaurant.
Question Form:
Have you visited the reservation desk?
'Ever' and 'Never' with the Present Perfect
Use the present perfect with both 'ever' and 'never'. These time expressions are often used to to discuss experiences.
She has never tolerated disgruntled employees.
The food service management team has never seen a raise.
Place 'ever' or 'never' directly before the past participle in the question form.
Has the hostess ever thought about changing venues?
Have you ever audited the chain operators?
'Never' means 'not ever' and is a negative form of the present perfect.