1. 买单
Check, please.
May/Can I have the bill / check, please?
Could I get the bill / check, please?
2. 分开结账(服务员可能会问One check or separate?)
We would like to separate checks, please. 我们分开买单(服务员拿不同的账单来,你们付各的)
Let’s split the check / bill. 咱们自己付自己的吧(服务员拿一个账单你们一个人先买完单,你们自己再算怎么给对方钱)
3.你来付。
Let me pay for it. 我来付吧。
Let me buy you the movie ticket. 我来给你买电影票吧。