This document discusses the evolution of communicative language teaching (CLT) and proposes a "principled communicative approach" (PCA) that better integrates explicit and implicit learning. It argues that while CLT effectively promoted communicative skills, it did not properly address the psychology of language learning. The PCA incorporates focus on form, automatization of fluency through practice, and teaching of formulaic language. The author proposes seven principles for the PCA to provide a more psychologically-valid approach for second language acquisition in the 21st century.