(Grammar)(of a tense) denoting an action completed prior to some past point of time specified or implied, formed in English by had and the past participle, as in he had gone by then (语法)(时态)过去完成时的
noun
the pluperfect tense 过去完成时
语源
late 15th cent.: from modern Latin plusperfectum, from Latin (tempus praeteritum) plus quam perfectum ('past tense) more than perfect'