earns its keep是什么使用方法

That's where Straitford earns its keep.

请问老师Where引导的是表语从句吗？earns its keep是什么使用方法？

That【主语】// is【系动词】// where Straitford earns its keep【表语从句】.

=That is the place where Straitford earns its keep.

参考译文：这就是斯特利福德赚取生活费的地方。

解答：where为融合型连接副词引导表语从句，where=the place where

备注：keep  为名词使用方法 意思是“生活成本” earn one's keep赚取某人的生活费

It's about time you got a job to earn your keep .你该找个工作挣我们的生活费了。