Henry, what have you been up to?

亨利，最近忙什么呢？

Oh, not much.

哦，没忙什么。

What have you been up to?

最近忙什么呢？

You know, just getting prepared for the coming mid-term exam.

你知道的，就是忙着准备即将来临的期中考试。

重点讲解:

What have you been up to?

What are you busy at?

What are you busy at?意思是“在忙什么呀?”，但是这种表达太过书面化，老外遇到熟人时一般会说What have you been up to?短语be up to在这里是 “忙于…”的意思。此外，be up to在口语中还常常表示“取决于…”,相当于depend on,如：It's up to you.这由你决定。