Als je de tijd hebt gekozen...
Present Perfect: have / has + voltooid deelwoord (stam + ED of 3e rijtje onregelmatige werkwoorden.
We have lived here since 1999. He has already eaten a lot.
Present Perfect Continuous: have / has + been + ww+ing
We have been going to this school since 2015.
I have been taking lessons for 9 years .