in name only

名义上
有名无实
徒有虚名

例句与用法：

He's manager in name only, it's his assistant who really runs the place.

他只不过是名义上的经理，而实际上是他的助手掌管这里的一切。

He is a scholar in name only.

他只是个名义上的学者。

详细释义：

表面上的; 挂名的

She is a lawyer in name only; she paints all day.

她只是个挂名的律师; 她整天画画。