Conjugation in Passé Composé Tense

Auxiliary verbs are essential in forming the passé composé. The two main auxiliary verbs are "avoir" and "être."

Regular verbs ending in -re form their past participle by replacing -re with -u. Example: vendre → vendu.

Regular verbs ending in -ir form their past participle by replacing -ir with -i. Example: finir → fini.

Regular verbs in -er, -re, and -ir follow specific rules for forming the passé composé, combining the auxiliary verb and the past participle.

"Être" is used as an auxiliary verb for reflexive verbs and verbs of movement in the passé composé.

Irregular verbs in the passé composé require memorization of their unique past participles and auxiliary verbs.

The verb "devoir" in the passé composé uses "avoir" as its auxiliary verb and forms the past participle as "dû."

These verbs use "avoir" as their auxiliary verb and form irregular past participles: prendre → pris, comprendre → compris, apprendre → appris, surprendre → surpris.

The verb "venir" uses "être" as its auxiliary verb and forms the past participle as "venu."

The verb "partir" uses "être" as its auxiliary verb and forms the past participle as "parti."