1.
He admitted to his employer that he had made a mistake .
他向他的雇主承认他犯了一个错误。
2.
He made a mistake, they say.
他们只是说，他犯了一个错误。
3.
He committed a vital error.
他犯了一个致命的错误。
4.
He made that mistake unconsciously.
他无意中犯了那个错误。
5.
He made a careless mistake.
他犯了一个粗枝大叶的错误。
6.
He is sensible that he has made a grate mistake.
他觉察到自己犯了一个重大错误。
7.
He committed a fatal mistake.
他犯了一个无可挽回的错误。
8.
I made a grave mistake.
我犯了一个严重的错误。
9.
Instead of railing at a student for his mistakes, we had better help him to correct them.
一个学生犯了错误不要光去责备他，我们最好帮助他改正错误。
10.
Instead of railing at a comrade for his mistakes, we had better help him to correct them.
一个同志犯了错误不要光去责备他，我们最好帮助他改正错误。
11.
It was a grave mistake when he accused me of lying.
当他指控我说谎时，他犯了一个严重的错误。
12.
His carelessness results in a serious blunder.
他的粗枝大叶导致他犯了一个严重错误。
13.
I made a mistake, and a very bad mistake at that.
我犯了一个错误，而且是一个严重的错误。
14.
He makes a listless mistake in answer the question.
他在回答问题时犯了一个不小心的错误。
15.
I guess he made a spelling mistake in his English exercise.
我想他在英语练习中犯了一个拼写错误。
16.
It seemed to him quite possible that he had simply made a stupid mistake.
他觉得很有可能，自己犯了一个愚蠢的错误。
17.
It means being analytical about everything, acknowledging that human beings all make mistakes and not negating a person completely just because he has made mistakes.
就是对一切加以分析，承认人总是要犯错误的，不因为一个人犯了错误就否定他的一切。
18.
In the case of persons who made mistakes and, in particular, grave mistakes, we must expose and criticize their errors while at the same time creating the conditions necessary for them to mend their ways.
对犯了错误特别是犯了严重错误的人，一定要揭发批判他们的错误，并给他们创造条件，改正错误。