1. I regret doing that.
我很后悔那样做。
2. I am ashamed of ...
我对...感到很羞愧。
3. I shouldn't have done it.
我真不该那样做。
4. If only I...
要是...就好了。
5. I should have asked you.
我要是问你就好了。
6. I went a bit too far.
我做得有点太过分了。
7. It was too careless of me to make such a decision.
我做这样的决定太草率了。
