THE FUTURE PERFECT CONTINUOUS TENSE

AFFIRMATIVE NEGATIVE INTERROGATIVE
I shall/will have been reading I shall/will not have been reading Shall/will I have been reading?
He will have been reading He will not have been reading Will he have been reading?
She will have been reading She will not have been reading Will she have been reading?
It will have been reading It will not have been reading Will it have been reading?
We shall/will have been reading We shall/will not have been reading Shall/Will we have been reading?
You will have been reading You will not have been reading Will you have been reading?
They will have been reading They will not have been reading Will they have been reading?

    Example:
    By the next August he will have been teaching English for 30 years.
    By the next August he will not have been teaching English for 30 years.
    When Will he have been teaching English for 30 years?