I don't know "What to do 和 I don't know "How to do it"?哪个句子是正确的呢?

I don't know "What to do 和 I don't know "How to do it"?哪个句子是正确的呢?
I don't know "What to do 和 I don't know "How to do it"?哪个句子是正确的呢?

I don't know "What to do 和 I don't know "How to do it"?哪个句子是正确的呢?
两个句子在语法上都是正确的,只不过前一个意思为我不知道做什么,后者为我不知道怎么做它

语法都是正确的，就看语境了。

都对.翻译不同.第一个,我不知道做什么,第二个,我不知道怎么做