请教HOW的用法

90. Since 1986, when the Department of Labor began to allow investment officers' fees to be based on how the funds they manage perform, several corporations began paying their investment advisers a small basic fee, with a contract promising higher fees if the managers perform well.

(A) investment officers’ fees to be based on how the funds they manage perform, several corporations began

(B) investment officers’ fees to be based on the performance of the funds they manage, several corporations began

(C) that fees of investment officers be based on how the funds they manage perform, several corporations have begun

(D) fees of investment officers to be based on the performance of the funds they manage, several corporations have begun

(E)  that investment officers' fees be based on the performance of the funds they manage, several corporations began

我一直理解HOW引导的是方式状语从句,不用在介词的后面,后来做XDF补充教材是发现HOW可以跟在介词的后面,所以有点困惑,请帮我解释一下这个问题

XDF352

The mistakes children make in learning to speaking tell linguish more about how children learn language than do the correct forms they use.

如果介词可以跟HOW, 那么OG90为什么不用HOW, 因为我觉得原文有HOW的含义.

how可以引导名词从句，从某种意义上说，名词从句可以理解为变相的名词，所以介词+how从句有时是可行的。另：XDF352的题目是否可以贴全，以便做进一步的解释。

OG90的关键并不是how的问题，其他错误决定了选项。关于时候有how的意思，我们可以举个例子：‘告诉我你的打算’和‘告诉我你将如何去做’，这两句话所要表达的意思应该是相同的，无非是后面一个用how，而前面一个直接用名词，所以说，how的意思完全有可能被名词替代。

先谢谢,在仔细研读研读.

XDF352

The mistakes children make in learning to speaking tell linguists more about how they learn language than the correct forms they use.

A)    how they learn language than  

B)    how one learns language than  

C)    how children learn language than do

D)   learning language than

E)    their language learning than do

现在已经确认HOW从句可以放在介词之后表名词的含义,但是HOW难道引导的不是方式状语从句吗?还是它还可以引导名词性从句?对于你的说法“how的意思完全有可能被名词替代”也还是有一点疑惑，是所有的HOW从句都可以改成名词形式吗？还是部分？XDF352这题可以改吗？

名词从句

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