Here's how to conjugate "revenu" in the passé composé with être:
Subject | Passé Composé (with être)
------- | --------
Je | suis revenu(e) (I have come back)
Tu | es revenu(e) (You have come back)
Il/Elle/On | est revenu(e) (He/She/One has come back)
Nous | sommes revenus(es) (We have come back)
Vous | êtes revenus(es) (You have come back)
Ils/Elles | sont revenus(es) (They have come back)
Important:
* Gender Agreement: The past participle "revenu" agrees in gender with the subject. So, it becomes "revenu(e)" for feminine subjects (je, tu, elle, elle, nous, vous, elles).
* Placement: The past participle "revenu(e)" goes after the auxiliary verb "être".
Let me know if you have any other French verbs you want to practice conjugating!