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
介词短语可以放句首吗?如：to the contrary?