What’s the difference between 你去干嘛 and 你去吗?

Question

I am sure if they mean the same. If there are some differences between them, what are those? When and how to use each of them? Thanks.

Answer 1

They don't mean the same.

• "你去干嘛?" means "What are you going to do?" or maybe "Why are you going?" depending on the context.

• "你去吗?" means "Are you going?"

Examples:

A: 我出去一会 = I'm leaving for a while. B: 你去干嘛? = What are you going to do?

A: 我去开会了 = I'm going to attend the meeting. B: 这会是给经理开的, 你去干嘛? = The meeting is intended for managers. Why are you going?

A: 我要去吃午饭, 你去吗 = I'm leaving for lunch. Are you going (with me)?