Present perfect continues: The first verb "have" is part of the present perfect tense, which connects the past to the present. The second verb "going" is in the continuous (or progressive) form, which shows that the action is ongoing. Past perfect continues: The first verb "had" is part of the past perfect tense, which indicates that an action happened before another action in the past. The second verb "going" is in the continuous form, showing that the action was ongoing at the time.
