A" and "an" are indefinite articles that precede nouns or maybe the adjectives modifying nouns. In English grammar, "a" and "an" are determiners, meaning they specify the identification or quantity of a thing, and for each phrases, that quantity is "1"—the phrase from which They are derived. 1also; in addition https://emiliodlsao.magicianwiki.com/562691/langdon_real_estate_things_to_know_before_you_buy