讲解文本：

act up 胡闹，调皮，捣蛋

Don't take any notice of the boy. If you scold him, he'll only start acting up.

不要理那孩子， 你要是责骂他，他反倒会开始调皮捣蛋。

The children have been acting up all evening.

整个晚上孩子们都在调皮捣蛋。

疯狂练习吧!