pay sb back 准确意思是?

1、I will pay you back意思是“我会还（钱）给你的.”
相同意思的还有
pay for,付钱；
pay off,还清债务；
pay back,把钱还回给某人
2、我明天会还你钱,今天别要来找我了.
I'll
pay you back tomorrow,don't come for me today.
3、我明天会还你1000元.
Tomorrow I will give you 1000 yuan.
4、你什么时候把500元还我?
When you put
500 yuan to me?
5、你到底打算什么时候还钱呢?
When are you going to pay?/When will
you plan to return
the money?