A prescriptive grammar
lays out rules about the structure of a language. Unlike a descriptive grammar
it deals with what the grammarian believes to be right and wrong, good or bad language use; not following the rules will generate incorrect language. Both types of grammar have their supporters and their detractors, which in all probability suggests that both have their strengths and weaknesses.
See Also: Standard English; Syntax; Dialect
Category: Learning and Teaching