The present perfect tense

Present perfect tense is formed by Auxiliary verb have / has + the past participle (the third form of the verb)
Present perfect example sentences: سادہ

Subject	Auxiliary verb	Main verb
I /we/ you/ they	have	played	football.
He/she/It	has	played	football.

Negative sentences: منفی

Subject	Auxiliary verb		Main verb
I /we/ you/ they	have	not	played	football.
He/she/It	has	not	played	football.

Interrogative sentences:سوالیہ

Auxiliary verb	Subject	has/ have	Main verb
Have	I /we/ you/ they	have	played	football?
Has	he/she/It	has	played	football?

The uses of the present perfect tense:

Present perfect is used to describe actions in which, there is a connection between the past and the present.

1 To describe actions that have happened in the past, without time specification.
She has watched the football match.
2 To describe actions that have started in the past and still continue.
Mrs. Kamal has lived here since in 1987.
This Irish pub has Existed since 1930.
3 To describe actions that has just been completed. Here, the auxiliary verb the adverb "just" adjusted.
Mr Miller has just called me but I can not remember why.
I have lost my keys. Can you help me to look for them?
Watch out! I have mopped the floor.
The present perfect often occurs in conjunction with the following 
yet, since, for; Already, never, so far, before