想了半天终於发现问题的症结所在...!
make 可以直接是 "让...成为" 好学生 的意思,(make 最常用的意思是"做...、做出...、造成...")
但是become 是 "成为" ,而且一定要有 一个 "人" 来 成为.(I become a better student)
──也就是说那个句子可以改成这两种写法：(如果要用become 的话)
reading...is also a good way for you/ for people to become a better student
reading...is also a good way to help you become a better student.
应该是这样.