you have finished
Alors, tu as fini par venir me saluer !
So, you finally came to say hello!
— Adieu ma concubine (1993)
Ai-je raison de penser que tu as fini de faire ce qu'on t'a demandé ?
Am I right in thinking that you've finished doing what you were asked to do?
Dès que tu as fini de peindre le mur, tu peux rentrer.
As soon as you have finished painting the wall, you can go back inside.
Call me when you're done.