【复习目标】
● 如何礼貌地提出要求，礼貌地请求允许做某事。
● 写留言条以请求他人的帮助。
【语言目标】
● Could you take out the trash? Sure.
● Could I borrow the car? Sorry, but I need it, I have to go to a meeting,
● I have to make the bed and do the laundry.
【语言结构】
● 用Could委婉地表示请求
● 用could委婉地请求许可
● make与do的区别
