Kijk maar:
I have seen that movie before.
(-) I have not seen that movie before.
(?) Have I seen that movie before?
We have listened to that recording.
She has played football for three years.
He has taken the dog out.
Present perfect:
Als er niet precies in de zin staat wanneer iets was. (Dat is niet belangrijk.)
I / you / we / they --> HAVE + voltooid deelwoord
He/she/it --> HAS + voltooid deelwoord
LET OP --> onregelmatige werkwoorden hebben hun eigen vorm