tense and aspect 就是指时态.
aspect :【文】(动词的)体, 时态, 时间
tense: 【文】(动词的) 时态, 时式
例: What we call 'tense' in English combines the grammatical notions of tense and aspect. Tense indicates the time that the action of the verb took place (now, earlier, later or present, past, future). Aspect indicates whether the action is completed or on-going (perfect or progressive).
