Coactions
相互作用
🗣️ 情景例句
At 4, but I have to leave by 3:00 to get there on time.
四点，不过我三点必须离开，才能准时到那里。
What were you doing when I called you on the telephone?
当我打电话给了你时，你正在做什么？
How old is she?
她多大了？