You've seen that in compound tenses, such as Le Passé Composé, the majority of verbs use avoir as auxiliary. See for example Conjugate regular -er verbs (+ avoir) in Le Passé Composé (conversational past). For those verbs, the past participle remains unchanged.
However, it is different when it comes to verbs using être as the auxiliary in Le Passé Composé, such as the Conjugate coming and going verbs (+ être) in Le Passé Composé (conversational past), Conjugate mourir, naître, décéder, devenir, rester (+ être) in Le Passé Composé (conversational past) and Conjugate reflexive verbs (+être) in Le Passé Composé (conversational past).
Look at these verbs using être as auxiliary in Le Passé Composé:
Note that when être is used as the auxiliary in compound tenses such as Le Passé Composé, the past participle must always agree in gender and number with the subject of the verb.
The endings follow this pattern:
Note that when the group includes men AND women, you will always use the masculine-plural ending -s.
Here are some examples:
ATTENTION: Case of agreement with vous
As you know, the French vous can be used to refer either to more than one person (plural you), or in a polite way to a single person (formal you).
In le Passé Composé of (+ être) verbs, the agreement will depend on which vous is being used:
- with the plural vous, the past participle will take -s or -es depending on the gender of the people in the group it refers to:
- with the formal/singular vous, the past participle will remain unchanged or take an -e depending on the gender of the person it refers to: