✗
On top of that, students should cite sources in academic papers.
✓
In addition/Furthermore, students should cite sources in academic papers.
正式學術寫作中，on top of that 太口語；建議改用 in addition、furthermore 或 moreover。
✗
On top of that, our school should ban junk food. (作為第一個理由)
✓
First, our school should ban junk food. On top of that, they should provide healthier options.
on top of that 用於『再補充一點』，通常不作為第一個論點的開頭，應先有前述理由再接續使用。