good-for-nothing

His father always told him not to become a good-for-nothing.

他父亲总是告诉他不要成为一个无用之人。

用法提示：名词单数形式，指一个没有价值的人。

The lazy employee was fired for being a complete good-for-nothing.

那个懒惰的员工因为完全是个废物而被解雇了。

用法提示：名词单数形式，强调其无价值的状态。

They looked down on those good-for-nothings who never worked.

他们看不起那些从不工作的无用之辈。

用法提示：名词复数形式，指一群没有价值的人。