1. be ashamed of (doing) sth 对(做)某事感到羞愧或惭愧。如:
You really ought to be ashamed of that. 你实在应该对此感到惭愧。
He was ashamed of asking [having asked]such a simple question. 他由于问了这样简单的问题而感到难为情。
He is ashamed of his failure [having failed]. 他对自己的失败感到羞惭。
比较以下同义句型:
I am ashamed of that. / I am ashamed of myself for that. 我对此感到羞愧。
He is ashamed of being poor. / He is ashamed of himself for being poor. 他因为穷而感到羞惭。
2. be ashamed to do sth
(1) 因感到难为情或感到差耻而不愿某事。如:
I am ashamed to say so. 这样说我不好意思。
He was too ashamed to ask for help. 他不好意思请求帮助。
(2) 对做某事而感到羞愧或惭愧。如:
You should be ashamed to tell such lies. 撒这样的谎你应该感到羞愧。
He was ashamed to have made some careless mistakes. 他因出了些很粗心的差错而感到惭愧。
注:该用法有时可换成 that 从句。如上面最后一句也可说成:
He was ashamed that he had made some careless mistakes.
再比较:
他因说谎而感到羞惭。
正:He was ashamed of having lied.
正:He was ashamed to have lied.
正:He was ashamed that he had lied.