I guess that you "always" put more information in the sentence about the time where the action took place, like: "gisterend", "agelopen jaar", etc, and it makes totally clear that the action happened and was completed at that past time. ###>I guess that you "always" put more information in the sentence about the time where the action took place, like: "gisterend", "agelopen jaar", etc, and it makes totally clear that the action happened and was completed at that past time.