be a pity to

例句：

1. 1.I'm sorry to hear that you lost your job.
   听到你失业的消息我很难过。
2. 2.She felt a pity to see her old friend so sad.
   看到她的朋友如此悲伤，她感到很难过。
3. 3.It was a pity to waste such a good opportunity.
   浪费这样一个好机会真是遗憾。