tā / shì / wǒ / gōng / zuò / shàng / de / yuān / jiā / duì / tóu / zǒng / xǐ / huan / hé / wǒ / chàng / fǎn / diào

他是我工作上的冤家对头，总喜欢和我唱反调。

He is my workplace rival and always likes to oppose me.