你是谁啊

who do you think you are?

→ 你
phrase Uncommon #10,715
who do you think you are? Often used rhetorically or confrontationally to challenge someone's authority or behavior. It can also simply mean “who are you?” depending on context.
CH: 你凭什么命令我?你是谁啊?
EN: Who do you think you are to order me around?

你他妈以为你是谁啊

Who the fuck do you think you are?

— 痛苦与荣耀 (2019)

你他妈的以为你是谁啊

Who the fuck do you think you are?

— 追击者 (2008)

总是这种时候你是谁啊

Who are you, always turning up at times like this?

— 你的名字。 (2016)

你是谁啊

Who are you?

— 杀人回忆 (2003)

我知道你是谁啊

I know who you are.

— 唐人街探案 (2015)

你当你是谁啊

Who do you think you are?

你是谁啊?

Who are you, anyway?

— 母亲 (2009)

你是谁啊

Who are you, anyway?

— 追击者 (2008)

三叶你是谁啊

Mitsuha, who are you?

— 你的名字。 (2016)

你是谁啊

Who are you?

— 控制 (2007)