1、I have always regretted not having studied harder at school.我总是后悔在学校时没有更加努力学习。
2、Bitterly did we repent our decision.我们非常后悔做此决定。
3、Anger begins with folly, and ends in repentance.愤怒以愚蠢开始，以后悔告终。
4、He was filled with remorse after hitting the child.他打过孩子后感到悔恨不已。
5、He is repentant of his sins.他对于自己所犯的罪后悔不已。
