This document discusses the lexical approach to language teaching. It focuses on developing learners' proficiency with lexis, or words and word combinations. The key principle is that language consists of grammaticalized lexis rather than lexicalized grammar. Acquisition is based on comprehending and producing lexical phrases or "chunks" as unanalyzed wholes. Examples of lexical units include binomials, trinomials, idioms, similes, and connectives. The lexical approach believes that the lexicon is central to language structure, learning, and use, especially multiword lexical units that are learned and used as single items.