The past perfect continuous tense is used to describe actions that continued up to a point in the past. It emphasizes the duration of the action and its relevance to the past event that followed.
Composition:
Affirmation: Subject + had been + verb + -ing
Negative: Subject + had not been + verb + -ing
Interrogative: What + subject + went + verb + -ing?
Examples:
Affirmation:
I studied for three hours before the exam started.
She had been with the company for five years when she was promoted.
They had been playing football all afternoon before it started raining.
Cons:
I had not studied when I fell asleep.
He hadn’t been in town long before he left.
We were not working on the project when the deadline changed.
Inquiry:
Were you studying for the exam before it was postponed?
Has she been working at this job for a long time?
Were they playing video games when you called them?
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