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?

问题描述:

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