preach to the choir
成語所屬單字choir
preach to the choir — 慣用語
1. to share an opinion or idea with people who already agree with it, making the ef
1.慣用語
釋義
對認同者說教；多此一舉
to share an opinion or idea with people who already agree with it, making the effort unnecessary because no one needs convincing
例句
The principal was preaching to the choir when she told the science club that studying matters.
You are preaching to the choir about exercise — I already run three times a week.