你好吗？
1. How do you do?

你还可以这么说：

How are you doing?
How are you?
How have you been?
How's it going?
What's up?

聊天：

I just got my driver's license! 我刚拿到我的驾驶执照！

回答的公式：
1.心情＋谢对方＋回问
Fine/Good/Great/Not bad/Not good + Thank you/Thanks+ Yourself/How about you?
2.熟悉的朋友：心情＋最近发生的事＋回问
Fine/Good/Great/Not bad/Not good+

I just watched Fast & Furious 7. Have you seen it?
我刚看了速度与激情7，你看过了吗？