futuro perfecto

subject + will have + 3	1	2	3
	go	went	gone

Affirmative	Negative	Interrogative
I will have gone	I will not have gone	Will I have gone ?
You will have gone	You will not have gone	Will you have gone ?
He will have gone	He will not have gone	Will he have gone ?
She will have gone	She will not have gone	Will she have gone ?
It will have gone	It will not have gone	Will it have gone ?
We will have gone	We will not have gone	Will we have gone ?
You will have gone	You will not have gone	Will you have gone ?
They will have gone	They will not have gone	Will they have gone ?

NEGATIVE CONTRACTION:  WILL NOT = WON'T

Affirmative	subject + will have + 3
I will have gone to New York - Habré ido a New York
He will have gone to New York - El habrá ido a New York
Negative	subject + won't have + 3
I won't have gone to New York - No habré ido a New York
He won't have gone to New York - El no habrá ido a New York
Interrogative	Will + subject + have + 3 ?
Will I have gone to New York? - ¿Habré ido a New York ?
Will he have gone to New York? - ¿Habrá ido él a New York?

usos del futuro perfecto

Acciones que ya se están desarrollando o que se van a desarrollar en el futuro, pero que cuando llegue ese momento futuro que se menciona la acción ya habrá finalizado.

By tomorrow I will have finished my book. Para mañana, habré terminado este libro.

Before winter, you will have sold your old car.Antes del invierno, habrás vendido tu antiguo automóvil.

Before we arrive home, Mom will have prepared our breakfast.Antes de que lleguemos a casa, mamá habrá preparado nuestro desayuno.

We will not have finished these reports by 7 pm!! ¡¡No habremos finalizado estos informes para las 7 de la tarde!!