Past Future Perfect Continuous Tense

Usage of Past Future Perfect Continuous Tense
  1. Past Future Perfect Continuous Tense emphasize the duration of an activity that would be in progress before another time or event in the future in action but past in time of speaking (I would have been sleeping for two hours by the time my brother went home because he would get home at midnight
  2. Sometime Past Future Perfect Continuous Tense and Past Future Perfect Tense have same meaning (By yesterday I would have been finishing my homework it has same meaning with By yesterday I would have finished my homework)
More Examples of Past Future Perfect Continuous Tense

Form of Past Future Perfect Continuous Tense
Affirmative
Subject + would/ should + have + been + Verb-ing
I/ you/ they/ we/ he/she/my friend/it would have been studying in Italy
I/ we should have been studying in Italy
Negative
Subject + would/ should+ not + have + been + Verb-ing
I/ you/ they/ we/ he/she/my friend/it would not have been studying in Italy
I/ we should not have been studying in Italy
Interrogative
Would/ should + subject + have + been + Verb-ing
Would I/ you/ they/ we/ he/she/my friend/it have been studying in Italy?
Should I/ we have been studying in Italy?
Negative interrogative
Would/ should + not + subject + have + been + Verb-ing
Would not I/ you/ they/ we/ he/she/my friend/it have been studying in Italy?
Should not I/we have been studying in Rome?

Notes:
The shorted form
I would                : I’d
You would           : You’d
We would            : We’d
They would          : They’d
He would            : He’d
She would           : She’d
Would not           : Wouldn’t
Should not          : Shouldn’t

Short Answer Question
Past Future
Perfect Continuous Tense
Question
Short Answer
Complete Answer
Would you have been studying in Madrid?

Yes I would
No, I would not
Yes I would have been studying in Madrid
No, I would not have been studying in Madrid
Would he have been studying in Madrid?

Yes he would
No, he would not
Yes he would have studying in Madrid
No, he would not have been studying