Explains completion of an action at a particular time in future
I will have made my project next year
Positive sentence
subject + will have + v3rd form + object
He will have covered half of his journey by this time tomorrow
Interrogative sentence
will + subject + hace + v3rd form + object
Will it have been drizzling since morning?
Negative sentence
subject + will not have + v3rd form + object
He will not have paid his fees by tomorrow.