could you come with me,please?这里为什么用could 而不用can 呢?

问题描述:

could you come with me,please?这里为什么用could 而不用can 呢?

could you come with me,please?
could是比较委婉的语气
在表示请求许可时,没有时间区别,在语气上could 更加委婉客气,例如:
Can I use your pen
Could I have a look at your book