David, Nancy和Mike正在聊天，他们在说什么呢？我们一起去听听吧。
David: Does your mother go to work on Saturdays, Nancy?
Nancy: No, she doesn’t.
Mike: Does your mother go to work on Saturdays, David?
David: Yes, she is very busy. What about your mother?
Mike: She goes shopping on Saturdays.
戴维：你的妈妈每周六去上班吗，南希？
南希：不，她不去。
迈克：你的妈妈每周六去上班吗，戴维？
戴维：是的，她非常的忙。你的妈妈呢？
迈克：她每周六去购物。