Quote Originally Posted by Боб Уайтман View Post
I do not understand your concern. When learning another language, I would like to know "How is an expression constructed?" and not "Why is it so?".
To answer "why?" you have to go deep into the history of the language. Native speakers are usually unable to answer "why?", all what they can do for you is to show "how".
But actually I do not mind discussing "why's" for the reason of curiosity. However, it does not affect language learning. .
From my point of view, it affects the language learning because if someone understands the specific reason about why a word is used the way it is he/she can remember it much more easily and can attain a deep knowladge about the grammer rapidly. So that is why i am digging into whys. Hows are also important but it means to memorize not to understand.

Quote Originally Posted by Боб Уайтман View Post
Adverbs are unchangeable. The concept of case is not applicable to them! What you are asking here is a sort of grammar nonsense (don't take it personally). .
It is infact not a grammar nonsense. What I tried to ask was, if i am not some adverbs are formed up from adjectives. For example хороший – хорошо, трудный – трудно. I do not know if all adverbs are like this but thought that Много would also be formed up from an adjective.
Quote Originally Posted by Боб Уайтман View Post
I do not understand why you provide the example of "many of something" and you're still surprised that Russian works the same way with its "много + Genetive Plural"? You should not be surprized then. .
I provide the example because it makes the reason why it is used that why so that it is easy to spread that knowladge rapidly to the other areas of the grammer. Language is a logical thing. Each and everything must have a reason and form my point of view is improtant about ones learning curve.