1.
• The present perfect is formed by combining
the auxiliary verb "has" or "have" with the
past participle.
I HAVE RECENTLY FINISHED MY HOMEWORK.
SHE HASN´T STUDIED FOR THE EXAM YET

2.
• We use the Present Perfect to say that an action
happened at an unspecified time before now.
I have seen that movie twenty times.

3.
• We CAN use the Present Perfect with
unspecific expressions such as: ever, never,
once, many times, several times, before, so
far, already, yet, etc.
I HAVE NEVER JUMPED FROM A BRIDGE

4.
• We use to describe actions that happened in
the past with a result now
I have bought a car.

5.
• We use to describe actions that happened in
the past and didn´t finished yet.
I have lived in this city since 1985.
I have played tennis since my childhood.