who are you：你是谁。
who you are：你是谁，你认识自己，认识你自己。
例句：
Defining your values and principles: who are you?
定义你的价值观及原则：你是谁？
Then who are you calling?
你在给谁打电话？
也许你只是想人别人知道你是谁。
Maybe you just want people to know who you are.
That's why experiences are so good at helping you understand who you are.
这就是为什么生活经历有助于你认识自己的原因了。