-- Because the 'rule' you have learnt is not a valid one-- or you remember incorrectly. First experience has nothing to do with present perfect. Present perfect has to do with the relationship between past and present.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Marc2010when I tell something aboutYou use the present perfect only in certain patterns with first.
what I did the very first time.