Question

plz answer fas t buddys or didis past perfect vs simple past

Answer 1

These two tenses are both used to talk about things that happened in the past. However we use past perfect to talk about something that happened before another action in the past, which is usually expressed by the past simple.

Answer 2

past indefinite or simple past define something with used to happen in past its rule is v2
whereas past perfect define something which had been in past its rule is had + V3
example
he liked dancing
he had completed his work