题目内容
19．你能别上课说话吗？Could you please not talk in class？．分析 Could you please not talk in class？
解答 答案：Could you please not talk in class？这里是提出请求，故用could you please do sth？不要说话not talk in class，故答案是Could you please not talk in class？
点评 Can/Could you please+v．+…？用来表示"请求别人做某事"．这是can/could的一般疑问句，并非询问对方有无能力，而是向对方提出请求，意思是"请你…，好吗？"．could是can的过去式，但在本句型中并不表示时间上的区别，而只有语气上的不同．could没有can那么肯定
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