Things native english speakers know but don't know they know:
Adjectives in English absolutely have to be in this order: opinion-size-age-shape-color-origin-material-purpose Noun. So you can have a lovely little old rectangular green French silver whittling knife. But if you mess with that word order in the slightest you will sound like a maniac. It's an odd thing that every English speaker uses that list. But almost none of us could write it out. And as size comes before color, green great dragons can't exist.
















