摘要： 过去进行时 主动语态:waswere doing 被动语态:waswere being done We were cleaning the classroom this time yesterday. 昨天这个时候我们在打扫教室. The classroom was being cleaned this time yesterday. 昨天这个时候教室正在被打扫 The teaching plan was being discussed at that time. 那时正在讨论教学计划. Was the TV set being fixed this time yesterday 昨天这个时候电视机正在被修理吗? The house was being painted when we arrived at his home. 我们到他家时.他家房子正在粉刷.

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