动词 “regret” 表示 “对过去的行为或事情感到难过”，后面既可以接动词 -ing，即 “regret doing”，也可以接不定式 “to do”，即 “regret to do”。搭配 “regret doing” 和 “regret to do” 的意思一样吗？想说 “后悔做了某事”，应该用哪一个？
用法总结
动词 “regret” 的意思是 “后悔；遗憾”，用来表达对过去的行为或处境感到难过。
“Regret doing” 的意思是 “后悔做了某事”。
- I regret buying that – it was expensive and doesn't work properly.
- She regrets not studying for her exam. She failed.
“Regret to do” 的意思是 “遗憾地（通知，告诉）”，常用于正式场合中，用来对坏消息表示遗憾或惋惜。
- We regret to inform you that there has been an accident.
- We regret to inform you that the 21:25 flight to London has been cancelled.
