求助~~~特殊疑问词+to do sth

ba80388

请问，是不是特殊疑问词+to do sth 的形式不对啊？之前在新东方上课作的笔记没写清楚。
说是特殊疑问词+to do sth=名词性从句
所以 I don't know how to answer the question. 就成了 I don't know answering the question. 所以这个句型不对。

总觉得有点怪，请指教一下啊~~

colasama

纠正一点。名词性从句的意思不是动词变成名词形式了，而是把整个从句看成一个整体，看成一个名词。

I don't know how to answer the question. 应该看成 I don't know that.  //that refers to  how to answer the question