A" and "an" are indefinite posts that precede nouns or the adjectives modifying nouns. In English grammar, "a" and "an" are determiners, meaning they specify the identity or quantity of something, and for both of those terms, that amount is "one"—the word from which they're derived. You only use and https://langdon-real-estate75319.dekaronwiki.com/671843/langdon_real_estate_things_to_know_before_you_buy