介词短语可以放句首吗？如：to the contrary?

我理解，to the contrary是来形容一个名词的

比如，if there is any plan to the contrary, we will meet at 7 tonight.如果没有相反的计划，我们今晚7点碰头

on the contrary是状语

比如，he said it was ugly, on the contrary i found beauty in it

他说这个很丑，相反的，我却从中发现了美丽。

所以on the contrary可以放句首，to……就不可以啦

可以 后面再说你想说的话