Futur antérieur

French Future Perfect

Le futur antérieur is the future perfect tense of the indicative mood. It's used to express actions that will happen before other actions in the future: it could be called 'the past of the future'.

In English, the future perfect is formed with ''will have'' + past participle of the verb, in French le futur antérieur is formed with avoir or être in le futur + past participle.

For example 

Tu auras été mon meilleur ami.You will have been my best friend.

Vous aurez eu une belle vie après tout.You will have had a good life after all.

See also: French Futur and All French tenses

I'll be right with you...