be chagrined at by

例句：

1. 1.I chagrined at my own mistakes and felt like a fool.
   我为自己的错误感到羞愧，觉得自己像个傻瓜。
2. 2.She was chagrined at the thought of disappointing her parents.
   一想到可能让父母失望，她就感到羞愧。
3. 3.The embarrassment of being caught in the rain made him chagrined at his own carelessness.
   被雨淋湿的尴尬让他对自己的粗心大意感到羞愧。