第 20 课: 速度和距离-3

This stopwatch shows five seconds. 秒表显示五秒钟。

This stopwatch shows ten seconds. 秒表显示十秒钟。

This clock shows two hours after three o'clock. 钟显示三点过两小时。

This clock shows fifteen minutes after three o'clock. 钟显示三点过十五分。

two hours before six o'clock 六点差两小时。

two hours after six o'clock 六点过两小时。

three hours before six o'clock 六点差三小时。

three hours after six o'clock 六点过三小时。