過去某時間正在進行的動作
What were you doing at eight o'clock last night?
昨晚八點的時候你在做什么?
I was talking with my mother on the phone.
我正在跟我媽媽打電話。
What was Robert doing at ten this morning?
今天早上十點的時候Robert在做什么?
He was playing tennis with Jack. 他正在跟Jack打網(wǎng)球。
I saw Lisa in the park this morning. 今天早上我在公園看到Lisa。
She was sitting on the grass and reading. 她坐在草地上看書。
I was traveling in Europe (at) this time last year.
去年的這個時候我正在歐洲旅游。