Learn how to conjugate regular -er, -ir, -dre verbs with avoir in Le Futur Antérieur (Indicatif) in French
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Le Futur Antérieur (Indicatif) is formed on the same model as Le Passé Composé (Indicatif), except avoir is here conjugated in Le Futur Simple (Indicatif).
For -ER verbs, you form the past participle by replacing the -er ending with -é.
For -IR verbs, you form the past participle by replacing the -ir ending with -i.
For -DRE verbs, you form the past participle by replacing the -dre ending with -du.
See also:
Conjugate verbs (+ être) in the future perfect in French (Le Futur Antérieur)
Conjugate vouloir/pouvoir/devoir in the future perfect in French (Le Futur Antérieur)
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Examples and resources

Nous aurons rempli ces documents avant la fermeture.We'll have filled in these documents before closing time.
Elle est malade. Elle aura oublié de mettre son écharpe.She's ill. She must have forgotten to wear her scarf.
Ils ne sont pas encore là. Ils auront encore traîné comme d'habitude.They're not there yet. They must have dawdled again as usual.
aimer
atteindre
attendre
choisir
compléter
entendre
Vous aurez entendu tellement de versions différentes !You will have heard so many different versions!
finir
gagner
grossir
Vous aurez bien grossi pendant vos vacances !You will have gained quite a bit of weight during your holidays!