The book includes two parts with ten chapters. The first part (consisting of five chapters) is concerned with the description of various aspects of the clause; and the second part (also consisting of five chapters) describes aspects of other grammatical units which are referred to by Halliday & Matthiessen respectively as above the clause, below the clause and beyond the clause | AN INTRODUCTION TO FUNCTIONAL GRAMMAR (Third Edition) . Halliday & Christian . Matthiessen London: Edward Arnold, 2004/2014 AN EXPERIENTIAL GRAMMAR OF THE VIETNAMESE CLAUSE Hoang Van Van Hanoi: Education Publishing House, 2012 Nguyen Thuy Phuong Lan* Faculty of English Language Teacher Education, VNU University of Languages and International Studies, Pham Van Dong, Cau Giay, Hanoi, Vietnam 1. Introduction 1 The books under review are both about systemic functional grammar. The first book is An Introduction to Functional Grammar, third edition by . Halliday & Christian . Matthiessen (2004/2014). The second one is An Experiential Grammar of the Vietnamese Clause by Hoang Van Van (2012). As will be seen, in his An Experiential Tel.: 84-912210707 Email: ntplan1011@ * Grammar of the Vietnamese Clause Hoang Van Van based himself on the systemic functional grammar framework as proposed by Halliday (1985/1994, 2012) and Halliday & Matthiessen (2004/2014). Therefore, in what follows, we will examine Halliday & Matthiessens’ book first. 2. An Introduction to Functional Grammar An Introduction to Functional Grammar, third edition is 689 pages long. It was VNU Journal of Foreign Studies, , (2018) 184-191 originally written by Halliday himself and the first edition came out in 1985 with many subsequent printings. In 1994, the book was re-edited by Halliday and was publsihed under the second edition also with many subsequent printings. In 2004, the book was revised by Matthiessen and was publsihed under the third edition. In this edition, although the title was retained, much of the book was expanded, providing more texts for illustration and more figures and diagrammes to talk about systemic dimensions of grammar in terms of both functions and systems. The book includes two parts with ten chapters. The first part (consisting of five chapters) is concerned with the description of various aspects of the clause; and the second .