The document discusses the national functional approach to teaching English language. It defines two key terms - notions and functions. Notions refer to concepts and ideas like time, size, emotions. Functions refer to the uses of language to achieve communicative purposes like making requests, apologies, invitations. The functional-national approach categorizes functions under five headings - personal, interpersonal, directive, referential, and imaginative. Each heading provides examples of language functions that fall under it.