That I know of, which is why I buy English books that specifically help with grammar and all that jazz. *Owns this book.* Because when teachers don't help laying down the foundation again (because it must be done, in my opinion), I go out and get it myself. :DOoooo boy, you've just scratched the surface (even if you are purposely generalizing). Even in college, they'll reteach you grammar, and you'd be surprised on how many people forget and have to relearn a lot of it (among other things).