This document outlines the nature and structure of language. It discusses the key components of language, including phonemes, morphemes, and syntax. It also describes some key properties of human language such as being creative, structured, meaningful, and referential. The document then provides an overview of the secondary English curriculum in the Philippines, including its goals and expectations at different grade levels. It aims to develop students' communication skills and prepare them for globalization. The scope and sequence of the language subjects are also outlined for each grade of the secondary curriculum.