This document provides examples and explanations for using the past perfect tense in English. The past perfect tense is used to talk about actions that were completed before something else in the past. It can be used for actions before the main event, descriptions of ongoing actions when another past action occurred, or to indicate that something had already happened before another past action. Examples are given for the past perfect continuous tense, which is used for ongoing actions before another past action, and the past perfect simple tense, which is used for completed actions before something else in the past.