ABSTRACT
This chapter shows how language is used to represent the external world of physical events and the inner world of people's thoughts. It reviews that there are different types of process, and each process has a certain number of possible participants and presents how these elements can be linked together to form longer stretches of text. The ideational metafunction, which is a constituent at the semantic level of the systemic model, deals with the representation of the world. It is made up of an experiential function and a logical function. A mental process is one that takes place in a cerebral environment. It has three basic sub-types: cognitive, perceptive, and affective. Cognitive mental processes are processes of thinking; perceptive mental processes are processes of sensing, whether they are motivated; and affective mental processes are processes of liking and disliking. In a relational process, a relationship is stated either between two entities or between an entity and one of its properties.
