We were opposites in character. 我们的性格正好相反。

do the opposite Whatever I suggested, they would go and do the opposite. 不管我建议什么，他们总会做相反的事。

the opposite of Larry seemed very agitated – the complete opposite of his usual cool self. 拉里似乎非常激动，与他平时冷静的个性完全相反。