where you are from是不是比where are your from 更口语化的提问

要么是where are you from?
要么是where do you come from?
没有where are your from.

Where are you from?

你说的两个都有文法问题

不对
may i ask where you are from
where are you from
都是口语话的。

where you are from语法上是不对的。
你可以这样说也很地道啊：so where are you guys from?

where you are from语法上是不对的