you must be looking forward.

题目

you must be looking forward.
you must be looking forward as much to his return as he himself is to seeing you.
还有这里出现的两个as有分别充当什么意思?

答案

你可以把它变化一下就可以理解了：
you must be looking forward to his return（ as much） as he himself is to seeing you
as much as的用法而已“和...一样（多）”
你肯定是和他想见你一样地期待他回来!