单词：behind my back
在我背后
behind my back的用法和样例：
例句
- George did it behind my back.乔治是背着我干了这件事的。
- I could bake a better cake with one arm tied behind my back!我可以轻而易举地烘烤出一只更好的蛋糕。
- I thought I could trust you to discuss our problems frankly, and not to go behind my back complaining to the manager.我原为以你会担率地谈谈我们间的问题，不会背着我在经理面前说我坏话的。
- He has the impudence to take things behind my back!他背著我拿东西真不害臊！