This document provides information about the past perfect tense, including its meaning, form, and use. The past perfect is used to describe an action that occurred before another past action or time. It is formed using "had" plus the past participle of the main verb. Examples are given of sentences in the past perfect, including combining sentences to show the before relationship between clauses. The document also notes that the simple past can sometimes be used instead of the past perfect for actions in a narrative setting. Practice activities are suggested for the reader to try using the past perfect tense.