perfectives是perfective的复数

perfective

美

英

英汉

adj.	1. 使完美[圆满]的 2. 【语】(动词体)完成的
n.	1. 完成体(的动词)

adj.	1. tending toward perfection 2. describes a verb that reports a completed action as opposed to an incomplete or continuing one
n.	1. a verb in the perfective aspect, or the aspect itself