Future Perfect Continuous tense

FUTURE PERFECT CONTINUOUS

FORM

The future perfect continuous is composed of two elements
the future perfect of the verb "to be" (will have been) + the present participle of the main verb (base + ing)

Subject	+ will have been	+ present participle
He	will have been	playing.
I	will have been	playing.

TO LIVE, FUTURE PERFECT CONTINUOUS TENSE

Affirmative	Negative	Interrogative	Negative Interrogative
I will have been living	I won't have been living	Will I have been living?	Won't I have been living?
You will have been living	You won't have been living	Will you have been living?	Won't you have been living?
He will have been living	He won't have been living	Will he have been living?	Won't he have been living?
We will have been living	We won't have been living	Will we have been living?	Won't we have been living?
They will have been living	They won't have been living	Will they have been living?	Won't they have been living?

FUNCTION:

Like the future perfect simple, this form is used to project ourselves forward in time and to look back. It refers to events or actions in a time between now and some future time are unfinished. It is most often used with a time expression.

EXAMPLES

• I will have been waiting here for three hours by six o'clock.
• By 2001 I will have been living in London for sixteen years.
• When I finish this course, I will have been learning English for twenty years.
• Next year I will have been working here for four years.
• When I come at 6:00, will you have been practicing long?