Unit 04：Robert isn't well. 罗伯特生病了
Linda: Hello, Karen. How are you?
Karen: I'm fine. But Robert isn't very well.
Linda: Oh, I'm sorry！What's the matter with him?
Karen: I'm not sure. He's very hot. He isn't well.
Linda: Is he hungry?
Karen: No, he isn't hungry.
Linda: Is he thirsty?
Karen: Yes, he's very thirsty.
Linda: Poor Robert! I am sorry! What about the doctor?
Karen: The doctor's very busy.
Linda: Yes, but Robert is ill.
Karen: Perhaps not very ill. But you are right. Better safe than sorry!
可能不是什么大病，但是你是对的，小心为上。( 宁愿要安全稳妥 而不是遗憾。引申为：小心不出大错。)