Past Future Perfect Tense


Usage of Past Future Perfect Tense
  1. Past Future Perfect Tense refers to an action, which would have been completed at a particular point of time in the future in action but past in time of speaking. It is always used with a time expression. (In 4 years' time ago, I would have finished studying in university)
  2. Past Future Perfect Tense refers to an action, which would have been continuing for a period of time by a particular point of time in the future in action but past in time of speaking. it can be substituted by the past future perfect continuous tense (By yesterday I would have finished my homework it can be
    substituted By yesterday I would have been finishing my homework

More Examples of Past Future Perfect Tense

Form of Past Future Perfect Tense

Affirmative
Subject + would/ should + have +Verb 3
I/ you/ they/ we/ he/she/my friend/it would have studied in Italy
I/ we should have studied in Italy
Negative
Subject + would/ should + not + have + Verb 3
I/ you/ they/ we/ he/she/my friend/it would not have studied in Italy
I/ we should not have studied in Italy
Interrogative
Would/ should + subject + have +Verb 3
Would I/ you/ they/ we/ he/she/my friend/it have studied in Italy
Should I/ we have studied in Italy
Negative interrogative
Would/ should + not + subject + have + Verb 3
Would not I/ you/ they/ we/ he/she/my friend/it have studied in Italy?
Should not I/we have studied 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 Tense
Question
Short Answer
Complete Answer
In 4 years' time ago, Would you have studied in Madrid?

Yes I would
No, I would not
Yes I would have studied in Madrid in 4 years' time ago
No, I would not have studied in Madrid in 4 years' time ago
In 4 years' time ago, Would he have studied in Madrid?

Yes he would
No, he would not
Yes he would have studied in Madrid in 4 years' time ago
No, he would not have studied in Madrid in 4 years' time ago