Investigated in this applied linguistic study is the problem of pedagogical grammar textbooks in English as a Second Language (ESL) that distort, idealize, or misrepresent linguistic facts. Arising in a period of increased linguistic emphasis on grammar (1925-1965), the problem has created a controversy between linguists and educators concerning grammars that fail to promote linguistic competence (Chomsky 1965) and communicative competence (Hymes 1971). The purpose of this study is to address the problem by answering the following question: to what extent is linguistic theory reflected in ESL pedagogical grammars? The study describes the grammatical theories within American structuralism (Bloomfield 1933), transformational grammar (Chomsky ...