adv.在什么上面,(关系副词)在那上面;
例句:
If that be fair whereon my false eyes dote,
如果我眼睛所迷恋的真是美,
Whereon the stars in secret influence comment;
都暗中受制于天上的星象;
This is the basis whereon his theory rests.
这是他学说依据的基础。