In the present monograph work we can specify After having studied the principles of the Peruvian National Curriculum. •From the contrast between traditional linguistics and contemporary linguistics we can say that the traditional approaches of linguistics were necessary for the existence of the present-day linguistic theories that support the nature of language of language teaching methodology. I assume that contemporary linguistic currents have to do with generative grammar, cognitive linguistics, pragmatics and text linguistics. • The psychological foundations of English language teaching in the National Curriculum has to do with the different learning theories that support the Communicative language teaching and the National Curriculum. • The Communicative language teaching is the product of the efforts done from the linguistic perspective and from the psychological perspective ...