John, let's go for a dance! — Sorry, I don't know how to shake a leg.

约翰，我们跳舞去吧！——对不起，我不会跳舞。

Shake a leg! The bus won't wait.

赶快！公共汽车不等人。

Shake a leg! We're already ten minutes late.

快点！我们已迟到十分钟了。

You'd better shake a leg or you'll be late again.

你最好动作快点，不然又要迟到了。

Whenever he hears music he is eager to shake a leg.

只要一听见音乐，他就很想跳舞。