“认错”常见的英文表达有 admit one's mistake、acknowledge one's fault 或 make an apology（侧重于因认错而道歉这一行为）。具体用法示例如下：
admit one's mistake：
He finally admitted his mistake.（他终于承认了自己的错误。）
You should admit your mistake and learn from it.（你应该承认错误并从中吸取教训。）
acknowledge one's fault：
She reluctantly acknowledged her fault.（她很不情愿地承认了自己的过错。）
It takes courage to acknowledge one's fault.（承认自己的错误需要勇气。）
make an apology（强调因认识到错误而道歉的行为）：
He made a sincere apology for his wrongdoing.（他为自己的错误行为真诚道歉，这也可以理解为他承认了错误并表达歉意。）
You should make an apology to your teacher.（你应该向你的老师认错并道歉 。）