The book is the classical academic works about functional grammar theory and the fundamental teaching material for teaching functional grammars in some universities at home and abroad. The book makes extensive revision for the second edition. Compared to the former edition, the renovation of the third edition mainly embodied in the following aspects: 1Addition of systematic network contents. 2Development from short sentence description to test analysis. 3Description based on language database. 4The revision and expansion of the theories. 5The application objects: postgraduates of English major, teachers and English linguistics fans.