I'm not a native speaker of English,(I'm just a Japanese English teacher living in Japan.)
I understand how you feel. As you can see, there are so many new threads. They are started every minute(maybe every second). So, it is extremely difficult for appropriate respondents to answer your questions. They have no intention to give you the cold shoulder. They are busy responding to other threads. Or your query is too difficult to reply to, which I think is the case here.
I know what you'd like to know(I'm also interested in those questions of yours.), but you'll need a grammarian or a linguist to meet your satisfaction.
I hope somebody in this forum will help to sort out your difficulties.
- For Teachers