| 单词 | past perfect |
| 释义 | Word Frequency past perfect grammar adjective 1. denoting a tense of verbs used in relating past events where the action had already occurred at the time of the action of a main verb that is itself in a past tense. In English this is a compound tense formed with had plus the past participle noun 2. a. the past perfect tense b. a verb in this tense |
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