the perfective of a verb
用于指某一具体动词的完成体形式，常带 of 短语说明是哪一动词。
The perfective of this verb is formed with a prefix.
这个动词的完成体形式由前缀构成。
完成时
完成体动词形式
A perfective verb form.
In English, the perfective is often formed with the auxiliary 'have' and a past participle.
在英语中，完成时通常由助动词“have”和过去分词构成。
用法提示：这里的 perfective 是名词，表示一种时态或体。
The teacher explained that the perfective focuses on the completion of an action.
老师解释说，完成时强调动作的完成。
用法提示：perfective 指代完成时这一语法概念。
Linguists distinguish between perfective and imperfective aspects in many languages.
语言学家在许多语言中区分完成体和未完成体。
用法提示：perfective 作为名词，表示完成体。
用于指某一具体动词的完成体形式，常带 of 短语说明是哪一动词。
The perfective of this verb is formed with a prefix.
这个动词的完成体形式由前缀构成。
与 use、choose 等动词连用时，前面加定冠词 the。
Russian speakers use the perfective for actions seen as complete.
俄语使用者用完成体形式表达被视为已完成的动作。
表示某动词以完成体形式出现，常用于描述句中的形态。
The verb is in the perfective, so the action is viewed as complete.
这个动词用的是完成体形式，因此该动作被视为已完成的。
grammar · medium
易错句子"I have eaten" is in the perfective aspect.
正确表达"I have eaten" is in the perfect aspect.
英语中 have + 过去分词 构成的是 perfect（完成时），perfective 指把动作视为完整整体的“完成体”，不是英语时态名称；因此描述该形式应用 perfect，用 perfective 属于术语混淆。
grammar · medium
易错句子In Russian, every verb has perfective and imperfective.
正确表达In Russian, every verb has a perfective and an imperfective.
perfective 作名词是可数名词（复数 perfectives），指一个具体的完成体形式；泛指“有完成体和未完成体”时需加不定冠词，或说 perfective and imperfective forms。汉语无冠词，学习者常漏掉。
grammar · medium
易错句子English has two perfectives: the perfect and the progressive.
正确表达English has two aspects: the perfect and the progressive.
perfective 只指单个动词的完成体形式，不能用来泛指语法范畴“体”；英语的“体”用 aspect 表示，故不能说 two perfectives。
perfective 是名词，指完成体动词形式；perfect 在语法中作形容词，指完成时（如 have done），也可表示“完美的”，词性和所指都不同。
perfective 把动作看作已完成的整体，imperfective 强调动作持续、反复或尚未完成，二者是同一体范畴里的对立项。
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