The past perfect progressive is a verb tense that is used to describe an ongoing action that was completed at some point in the past. It is often used to describe events that happened over a period of time, such as a journey or a period of study.
The past perfect progressive is formed by using the past tense of the verb „to be“ (was/were), followed by the present participle of the main verb (the verb that describes the action). For example:
I was studying. They were walking.
The past perfect progressive can be used with a number of different time expressions, such as „for two hours,“ „since five o’clock,“ or „all day.“
Here are some examples of the past perfect progressive in action:
I was studying for my exams since six o’clock this morning. We had been walking for hours before we finally arrived at our destination. She had been working on that project for days before she finally finished it.
