This is the first of the two courses in English morphology which adopts a systemic-functional perspective of grammar: it approaches grammar as a repository of expressive resources to be employed by language users for meeting their communicative goals rather than a mere list of structures to be described. It guides students through the system of language and uses up-to date and real-life illustrative data to explore its functioning in different settings of social life. The primary goal is to offer students a powerful tool for the analytical evaluation of others´, as well as their own, uses of language and thereby to develop empowered, competent and critical language users.