French language Q&A Forum

Can you use s’intéresser à instead of être intéressé de?

If

Ne le lui donne pas is don't give it to her, 

what is don't give it to him?

In the lesson on the above topic, it states that if "passer" is followed by a direct object, it uses "avoir" in the passé composé.

Elle est passée chez Laurent hier.She passed by Laurent's place yesterday.
Here, passer is followed by a direct object, yet uses "être".Should the translation be:  Elle est passée par chez Laurent hier?This example seems to contradict the rule, even though it is a verb of motion in this sentence. Should have a preposition.

Il va au Havre.= He's going to Le Havre. The place name start with 'h" so as per the rule infront of vowel or h we will use l'

But here it is à + le = au

pourquoi vous êtes retourné au lieu de êtes retournés