问题 what与who引导表语从句的区别

尊敬的刘老师,您好。我对下面这道题产生了疑惑: He is what is known as a “bellyacher”-he is always complaining about something.引导这个表语从句的引导词可不可以是who呢? 想听一下您的讲解，感谢！

问题 What he said proved to be true.的分析

What he said proved to be true.to be true 是不定式作表语。书上说这句话中 to be 可以省略，那么是不是可以理解为：What he said proved true.这句话中是使用形容词 true 作表语了呢？或者说其实没有什么语法现象，只是省略了而已。

问题 这里的what和such是不是即属于强化语也属于限定词

夸克这里说到 what和such是限定词，后面又说是强化语，是不是意味着这里的what 和such在这里是限位词也充当强化语呢？

问题 from where的句法功能分析（同时包括from的后置）

...from 可以后移吗？Across the street from where we were standing was a little park. 从我们站的地方穿过大街就有一个小公园。即：Across the street where we were standing from was a little park.

问题 sth is to sth what sth is to sth分析

Books are to mankind what memory is to the individual. 书籍之于人类，犹如记忆之于个人。问题：请问what引导的是表语从句吗？to mainkind在句中是什么成分？

话题 more than what is possible

话题 Be John what he may

话题 what if we told you

话题 what作为引导词可以有双重成分吗？

话题 how和what引导的感叹句？

话题 how和what引导的感叹句

话题 than what I hoped for

问题 ​in which year还是in what year

In what year did Canada become a country? 加拿大是在哪一年建国的？请问，这个句子为什么不用In which year...？

问题 为什么不能填 it 而要填 what

After ____ seemed to be a hundred years,I found my audience applauding-I made it. 这里为什么不能填 it 而要填 what？是语法（After词性搭配）的问题还是纯粹语义的问题？

问题 句子解析(What does it matter that...)

If the war is lost, what does it matter that the people are lost too?请问老师。matter在句中是动词吗？that从句是解释it吗？如何理解？