What is the passé composé ?
It is a past tense equivalent to the present perfect and simple past in English, referring to an action that took place in the past, and is over.
How is it formed?
subject pronoun + auxiliary avoir (to have) or être (to be) in the present tense + past participle of the conjugated verb.
How to form the past participle with irregular verbs?
Forming the past participle of irregular verbs is difficult as it doesn't necessarily follow a pattern. Please learn the main verbs' past participle by heart.
Examples of irregular 3rd group verbs:
Avoir (present tense)
Être (present tense)
Only reflexive verbs and movement verbs use être in the passé composé.
Other verbs from the third group and their past participles:
Put the verb in bracket into the passé composé