So far the students of Le Hong Phong Junior High School, Phan Rang City, Ninh Thuan province have been taught grammar with GTM (Grammar-Translation Method), which just prepares learners for conventional grammar-paper tests. Therefore, despite their considerable knowledge of grammar, the students fail to use the language they have learnt to communicate in real-life situations. Stimulated by this reality, the current study was carried out to investigate the effects of communicative grammar teaching on students' achievement of knowledge of grammar and oral communication. The results of the...