相反的是用英语怎么说

相反的是用英语可以表示为 "on the contrary"。这个短语来源于拉丁语的 "contrarius"，意思是 "相反的"。例如：
She thought that he didn't like her, but on the contrary, he was very fond of her.
People believed that the new law would cause chaos, but on the contrary, it brought order to the city.
Some people think that studying history is a waste of time, but on the contrary, it can teach us a lot about the world.
希望这对您有所帮助。