The theory of language underlying Audiolingualism was derived from a view proposed by American linguists. The view then came to be known as structural linguistics with Bloomfield and Fries as its representatives. Structural linguistics views language as a system of structurally related elements for the expression of meaning. These elements are phonemes, morphemes, words, structures, and sentence types. The grammatical system consists of a list of grammatical elements and rules for their linear combination into words, phrases, phrases and sentences.