Forme

Le futur parfait se compose de deux éléments
le futur simple du verbe "to have" (will have) + le participe passé du verbe principal

Sujet + will have + le participe passé du verbe principal
He will have finished.
I will have finished.
To arrive, au futur parfait
Affirmatif Négatif Interrogatif Interrogatif Négatif
I will have arrived I won't have arrived Will I have arrived? Won't I have arrived?
You will have arrived You won't have arrived Will you have arrived? Won't you have arrived?
He will have arrived He won't have arrived Will he have arrived? Won't he have arrived?
We will have arrived We won't have arrived Will we have arrived? Won't we have arrived?
They will have arrived They won't have arrived Will they have arrived? Won't they have arrived?

Fonction

Le futur parfait se réfère à une action achevée dans l'avenir. Lorsque nous utilisons ce temps, nous nous projetons dans l'avenir et portons un regard sur une action qui sera achevée à un moment ultérieur. Il est souvent utilisé avec une expression de temps.

Exemples
  • I will have been here for six months on June 23rd.
  • By the time you read this I will have left.
  • You will have finished your report by this time next week.
  • Won't they have arrived by 5:00?
  • Will you have eaten when I pick you up?