... “the grammar is natural, and so to be organized around the text, or discourse” (Halliday, 1994).+Descriptive vs. prescriptive grammar Although traditional grammar and prescriptive grammar are ... grammatical approaches, traditional grammar (TG) considers sentence as the largest unit in the grammatical system of a language, and the study of grammar is primarily concentrated around the ... VietnameseBehavioural clausesBehavioural clauses construe (human) behaviour, including mental and verbal behaviour, as an active version of verbal and mental processes. The main participant,...