在: exist; be living用: 40分钟跑完全程 run the course in 4 ...一般: same as; just like过去时: past tense一般过去时: past simple; simple past tense时态一般过去时: be done后面用一般过去式: insisted一般过去: simple past（一般过去时）一些人曾以为热是一种流体。: some people thought that heat was a fluid过去时: unit two time future time past在过去: in the past time,conclude过去时态: concluded不定过去时: aorist常用过去时: realize过去时复习: past tense review过去时构成: preteritization过去时态: preterite后事过去时: posterior past简单过去时: simple past九月过去时: wake me uwhen september ends破的过去时: on tornn先事过去时: anterior past远在过去: far back in the past在过去40年间: over the past years在过去，以往: in the past
