pluperfect
adj
(also past perfect) (grammar) (of the form of the verb phrase) expressing an action completed before a particular pointin the past (指动词词组形式)过去完成式的
a pluperfect(form of a) verb phrase 过去完成式动词词组. pluperfect, n (also past perfect) such a form (in English had and a past participle, as in `As he had not received my letter, he did not come´) 过去完成式(在英语中had加过去分词, 如此处例句中的had加received).