W-15:worn to a shadow 疲惫不堪
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。
