can you;could you有什么区别?
can you;could you有什么区别?
you can stay和you could stay有什么区别
Could you please ...和Could you...有什么区别
I could kill you 和I can kill you有什么区别?
could you 和 can you 的区别?
can you和 could you用法上有什么不同?
could you mind 与would you mind 有什么区别
Could you...?和would you...?有什么区别?
can&could有什么区别?
can you...could you...怎么区别?还有may,should
could you can you may you will you 的区别?could i may i can i呢
can you have you are you do you 在什么情况下提问? 有什么区别?