There are 16 verbs in French that require être rather than avoir in the passé compose. Sometimes there is a passé. Passé uses être to talk about physically passing by something. These irregular verbs also must agree in gender and in number.
Prepositions in French! You are the orange dot. Thank you to tesdefonceoutesgay for the help correcting it! See: [Spanish] [French] [Greek] [Gato] [Polish] [Dutch] [English] [Romanian] [Italian] [Arabic] [Malay] [Welsh] [German]