第 27 课: 离开与回来-3

He is tying his shoelaces. 他在系鞋带。

He is untying his shoelaces. 他在解鞋带。

He is zipping up his coat. 他拉上大衣拉链。

He is unzipping his coat. 他拉开大衣拉链。

The people are arriving at the house. 人们来到房子前。

The people are leaving the house. 人们正要离开房子。

The bus is arriving at the bus stop. 公共汽车正进站。

The bus is leaving the bus stop. 公共汽车正离开车站。