behind his back的用法和樣例：
例句
- His servants called him Mr Anderson to his face and Creeping Jesus behind his back.
他的僕人當面叫他安德魯先生，背後則稱他為偽君子。 - Say it to his face, not behind his back.
話要當面說，不要背後說。 - He will flatter a person to his face, and then rundown behind his back.
他會當面吹捧一個人，背後又說他壞話。 - He was held with his arms pinioned together behind his back.
他被捉住反綁著雙臂。
