Past Perfect Continuous Tense
It refers to an action that started in the past and continued up to another point in the past.
Also called Past perfect progressive tense.
The action began before a certain point in the past and continued up to that point.
E.g., When Sam came to the library, I had already been there before an hour.
Formula for present perfect continuous tense
"HAD BEEN"
Regardless of whether the subject is singular or plural, just add “had been” before the verb.
- Add “ing” to the verb.
Regardless of whether the subject is singular or plural, just add “had not been” before the verb.
- Add “ing” to the verb.
To from a question using present perfect continuous tense, begin your sentence with “HAD”, followed by the subject, then “been” and “ing” form of the verb.
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