"Work hard" is a common Chinese idiom that means to work diligently and with effort. It is a common advice to encourage people to pursue their goals and dreams with effort and perseverance. If you want to achieve something, working hard is essential. However, it is also important to maintain a healthy lifestyle and balance work and leisure time to avoid burnout and stress.

work hard相关的词汇有：

副词：hardly。

名词：hard work。

反义词：relax，rest。

此外，“work hard”表示“努力工作”或“刻苦学习”，是一种常见的表达方式。如果您需要更具体的信息，可以进一步询问。

work hard的动词变化是没有变化的。它本身是原形动词，不能进行变化^[1]^。如果进行变化的话，就是在其基础上添加不同的后缀形成不同的形式，如work-work harder-work hardest^[2]^。