过去进行时 past continuous

这种时态用于描述在过去某个特定时间点或时间段正在进行的动作或状态。

过去进行时的构成是：主语 + was/were + 动词的现在分词（即动词+ing）。

3.00 ------------------------- > 4.00 --------------------- > 4.30 ----------- > now 6.00

began playing< ---------she was playing---------- >stopped playing

was/were + -ing

一般过去时强调动作的完成，而过去进行时强调动作的进行。

举例： A: What did you do yesterday morning? B: We played tennis.(from 10 to 11.30)

A: What were you doing at 10.30? B: We were playing tennis.