Definition
Used to inquire about the purpose or benefit of doing something.
有什么用呢？
What good is constantly complaining? You should try to solve the problem instead.
不断抱怨有什么用？你应该试着解决问题。
What good is making a plan if we don't have the resources to execute it?
如果我们没有资源执行，制定计划有什么用？
What good is all the effort if we don’t work together as a team?
如果我们不作为一个团队合作，所有的努力有什么用？