Grammar

Hello, it's me again. I'm grateful for your help with my previous questions,
they were very helpful, but now it's time for some grammar questions.

I need links to pages that explain the grammatical use of all (if it's
possible) grammatical terms. It can't be language-specific, I need to know
more about several languages grammar. Anyone who could help me with a link
for such a page?
For example: I've made up the opposite of imperative, which one may call
"obeying", but that's not a very good name on the term.

/Martin - conlanging almost every day