1. a perfective tense used to express action completed in the past. 一种用来表达过去完成的动作的完成时态。
2. In the "finished" use , the past perfective denotes an action or state already in completion before a specific past. 过去完成体的“已完成”用法表示一个动作或状态在过去某时之前已经完成或结束。如。
3. In Ersu language, perfective prefixes and imperative prefixes have the same forms of some directive prefixes in verbs, in aspect, mood and space categories separately. 尔苏语动词的趋向前缀、已行体前缀和命令式前缀或同形，分属空间范畴、时体范畴和语气范畴。
英英解释
n.
1. a tense of verbs used in describing action that has been completed (sometimes regarded as perfective
2. the aspect of a verb that expresses a completed action
