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 administrative expenses declined lately?
We have sold our products below market value to our top customers.
We have bartered with them for their services before.
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:
We have bartered with them for their services before.
Negative Form:
They have not had an opportunity to increase the limited partnership.
Question Form:
Have you reported the incident to human resources?
'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.
He has never paid any of his collection charges.
The bank manager has never asked for the personnel costs report before.
Place 'ever' or 'never' directly before the past participle in the question form.
Has Tom ever considered purchasing at a discount window?
Have you ever lost an expense receipt?
'Never' means 'not ever' and is a negative form of the present perfect.