Question

what have you been up to是什么意思

Answer 1

what have you been up to
你一直都在做什么
双语对照
词典结果：
网络释义
1. 你一直忙些什么呢

2. 你最近在干什么

例句:
1.
So what have you been up to?
你近来都在干什么呢?

Answer 2

优择雅思为您解答：
what have you been up to的中文翻译是：你一直在忙什么呢
up 副词作表语，to介词作状语