Pluperfect

The pluperfect is formed with the preterit of the auxiliary "to have," followed by the past participle of the principle verb:

Usage

The pluperfect expresses the precedence of one action compared to another. The earlier action will be described by the pluperfect; the later will generally be described by the preterit. When one action precedes another, the pluperfect is not absolutely necessary. Witness this sentence, which provides a list of actions in chronological order (all expressed by the preterit):

It is usually only when one seeks to emphasize the precedence of one action that the pluperfect will be used. Often one finds such adverbs as "already," which reinforces the impression of precedence.

In certain phrases one action may be left implicit:

The pluperfect is often used in in hypothetical expressions with "if," in conjunction with the past conditional:

With the adverb "just" the pluperfect indicates the immediate past in a past context: