The present perfect tense

The present perfect tense
Usage: to talk about an action that ended before talking about
form:
(sub) +have/ has +( past participle)
1):-
I
you
we +have ('ve)+(p.p)
they
(plural noun)
2):-
He
She has ( 's) +(p.p)
It ( singular)
Ex.
I have watched a football match.
He has watched a football match.
They 've watched a football match.
Ahmed has watched a footbaal match.
The negative form
(sub) have not (p.p)
(sub) has not (p.p)
Ex.
You have not played basketball.
He has not played basketball.
have not---------(haven't)
has not----------------(hasn't)
You haven't played basketball.
He hasn't played basketball.