Sentence上に
文法の解説は英語です。
用法
The conjunction 上に introduces additional information emphatically. In addition to-; besides -; not only - but also;
例文
最近の子供は、外で遊ばない上に本も読まないらしい。
It seems that recently, children not only don't play outside but also don't read books.
このクラスは毎月試験がある上に宿題もたくさんあるから、とても大変だ。
This class is very challenging because it not only has exams every month but also a lot of homework.