What time you'll be done? 你什么时候完事?

寻问对方什么时候做完事情的时候可以用这句，不过这句口语. 很随意.对上司和长辈别这么说.看个对话

例句：

Lolita:Are you ready to leave yet ? I'm on my way to pick you up. I'm leaving the office right now. 你能走了吗? 我现在顺路去接你.
Florine: I'm still in a meeting.我还在开会
Lolita:Call me when you know what time you'll be done. 你完事的时候给我打电话.

lorine:Sure, I'll do that. 好的.