单词详解
adj. 

A. 感到难过的；感到可怜的 [F] [(+about/for)][+(that)][+to-v] (feeling sad and sympathetic)
I am sorry to hear that your brother passed away. 听到你兄弟去世的消息，我很难过。

B. 感到抱歉的；感到遗憾的 [F] [(+about/for)][+(that)][+to-v] (feeling sad and ashamed about sth. that has been done)
I’m sorry that I can’t join you in the discussion. 很遗憾，我不能参加你们的讨论了。
We're sorry to be late. 对不起，我们来迟了。

C. 后悔的，遗憾的 (feeling disappointed about sth. and wishing you had done sth. different or had not done sth.)

I’m sorry for what I said just now. 我对自己说的话感到懊悔。

相关词组

1. be sorry for/about 为某事感到抱歉

I’m sorry for what I said just now. 为我说过的话，我感到抱歉。

2. be sorry to do sth. 抱歉做某事

I’m sorry to have troubled you so much. 很抱歉这么麻烦你。

3. be sorry that为某事感到抱歉

I’m sorry that I wasn’t able to return your bike on time yesterday.

我很抱歉昨天未能按时把自行车还给你。