on the contrary   (TTS發音)

exactly the opposite相反地

    He is not selfish；on the contrary，he is very noble and generous. 他並不自私，恰恰相反，他是一個非常高尚而又慷慨的人。

    The teacher thought that the children went to the zoo； on the contrary，they went to the bakery. 老師以為孩子們去了動物園，恰恰相反，他們卻去了面包房。