French phrase
Je suis désolé d'avoir ~.
Meaning
I'm sorry I ___.
When to use it
An apology for something already done. It acknowledges harm and can help repair the relationship.
Example dialogue
Tu as effacé mon dessin !
You erased my drawing!
Je suis désolé d'avoir effacé ton dessin. Je peux t'aider à le refaire.
I'm sorry I erased your drawing. I can help you draw it again.