Futuro perfecto

Affirmative

I will have understood

He will have understood

She will have understood

It will have understood

We will have understood

You will have understood

They will have understood

Negative

He won´t have understood

She won´t have understood

It won´t have understood

We won´t have understood

You won´t have understood

They won´t have understood

Questions

Will he will have understood?

Will she will have understood?

Will it will have understood?

Will we will have understood?

Will you will have understood?

Will they will have understood?

El future perfect se utiliza para hablar de algo que habrá concluido en un momento determinado del futuro.

I´ll have finished this letter soon.

By the time I´m 30 I´ll have travelled the world.

They´ll have had their car for 2 years next month.