I don't know what I did wrong.

我不知道我就是这样做是错误的。

youdao

I can't think what I did wrong.

我不能认为我做的是错的。

youdao

Tell me what I did wrong and I'll listen!

告诉我我哪儿做错了，我会听着！

youdao

Which is sort of the question we'd immediately like to ask. Instead, I asked why did it produce the result it did. So I'm not asking myself what's wrong? Or how could I make it right?

其实这个问题我们马上就要问,我问了为什么它会返回这样的结果,因此我并没有去在意哪儿错了,或者我该怎么改正它，我在意的是它？

麻省理工公开课 - 计算机科学及编程导论课程节选

After watching it, I knew exactly what I did wrong and how I could have done things differently by not rushing in.

BBC: Khan seeks redemption with Roach

This was mainly what I did wrong.

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"I want to tell the court that what I did was wrong and illegal and I want to say I'm sorry, " Mr Li told district judge Leonard Stark, although he disputed the retail value of the software he stole and sold.

BBC: Chinese man pleads guilty in $100m software scam