This document provides an overview of basic notions of functional grammar, including linguistic context, social context, and language metafunctions. It discusses how linguistic context refers to other linguistic units that accompany the unit being discussed. Social context includes situational, cultural, and ideological contexts. The three language metafunctions are ideational, interpersonal, and textual. The ideational metafunction deals with experience and logic. The interpersonal metafunction focuses on social roles and relations. The textual metafunction is concerned with how text is organized and linked together.