Question

on one hand,on the other hand与for one thing,for another thing两者有什么区别

Answer 1

on one hand, 与on the other hand ，一个表示好的方面，一个表示坏的方面；
eg 1. On one hand, it's convenient, but on the other hand, it's time-consuming.
eg 2. On one hand, he is very obedient to his wife; on the other hand, he treats his parents badly.
for one thing 和for another, 肯定都肯定，否定都否定。
For one thing, It's not suit you, for another, it's too expensive.

Answer 2

on one hand,on the other hand 一方面...另一方面
for one thing,for another thing 首先...其次

Answer 3

2楼说的对。

Answer 4

都是"一方面 另一方面"
完全可以互相代替