You should understand the adverbially, i.e., the same as .
The subject of should be _he_. Expanding very literally, it is
* ()()()
which translates to
* He is dejected to the extent that looking at him makes me sorry.
You should understand the adverbially, i.e., the same as .
The subject of should be _he_. Expanding very literally, it is
* ()()()
which translates to
* He is dejected to the extent that looking at him makes me sorry.