名词从句怎么用？
将结构完整的句子当名词来用，在另一个大句中充当某种成分，这种子句被叫做：名词从句。
一般而言，有四种类型的名词性从句：主语从句，宾语从句，表语从句和同位语从句。
我们来看下例子：
The news that he succeeded in the experiment went around quickly. 同位语从句
That he succeeded in the experimentis true. 主语从句
I don’t know that he succeeded in the experiment. 宾语从句
The fact is that he succeeded in the experiment.表语从句
以上都是陈述句做名词性从句，用that作为引导词。
我们尝试将一般疑问句在大句中充当名词看看：
The doubt whether or not he succeeded in the experiment went around quickly. 同位语从句
Whether/if he succeeded in the experimentaroused people’s curiosity. 主语从句
I don’t know whether/if he succeeded in the experiment. 宾语从句
My question is whether or not he succeeded in the experiment.表语从句
显然，将疑问句作名词成分时，需要用whether或if来当引导词。
那么，你可以尝试将特殊疑问放入大句中充当名词吗？
