be ashamed of

例句：

1. 1.She was ashamed of her poor singing voice.
   她为自己的糟糕歌唱声音感到羞愧。
2. 2. He was ashamed of his failure to finish the project on time.
   他为自己的未能按时完成项目而感到羞愧。
3. 3.She was ashamed of her child's behavior in front of others.
   她为孩子在他人面前的行为感到羞愧。