I’m browsing web searching for english language grammar, but i found only few simple examples like:
s -> np vp
np -> det n
vp -> v | v np
det -> 'a' | 'the'
n -> 'woman' | 'man'
v -> 'shoots'
Maybe I don’t realise how big this problem is because i tought that grammar has been formalised. Can somebody provide me a source for some expanded formal english grammar?
You may want to examine the work of Noam Chomsky and the people that followed him. I believe much of his work was on the generative properties of language. See the Generative Grammar article on Wikipedia for more details.