In Italian, one of the past perfect tenses which corresponds with the English past perfect tense (also called the pluperfect) is the trapassato prossimo. This is a compound tense, formed using both the past participle of a verb and a conjugated form of either avere or essere.
The past perfect expresses an action that took place in the past before another action was completed. For example, they had left or she had called.
The past perfect expresses an action that took place in the past before another action was completed. For example, they had left or she had called.