worn to a shadow 疲惫不堪

【讲解】

worn指“磨损，损耗”，该习语从字面上理解就是“磨得只剩下影子了”，即“疲劳之甚”。

【对话】

A:You look so tired.

A:你看起来很疲倦。

B:I was studying all the night preparing for today's final exam. So I am worn to a shadow now.

B:昨天一夜没睡，准备今天的期末考试，所以现在打不起精神。

A:I don't think studying all the night will do you much good.

A:我觉得通宵学飞对你没什么好处。

B:Maybe you're right. But it's too late now.

B:也许你是对的，但是现在说太晚了。