Lesson on PAST PERFECT SIMPLE & CONTINUOUS (He had studied or He had been studying)

This video tutorial explains the differences between the past perfect simple and past perfect continuous tenses. It provides examples to illustrate how each tense is used to describe actions that occurred before another past action. The past perfect simple is used for actions that are completed, while the past perfect continuous is used for actions that were ongoing. The tutorial includes timelines to help visualize the sequence of events and concludes with a recap of the key differences between the two tenses.

In the example 'She had been going to university for three years when I met her', identify the two actions and their sequence.

What does the timeline indicate about the actions in the past perfect tenses?