______provided the methodological foundation for materials for the teaching and its principles formed the basis of such widely used series as English 900 and Success With English.

单项选择题In Chomsky's theory, language competence refers to knowledge of grammar rules, while language performance refers to ______.

单项选择题The Grammar-Translation Method was at one time called ______ since it was first used in the teaching of the classical languages of Latin and Greek.