The grammatical competence of the English language plays a crucial role in the progress of language mastering. However, it is noted that the position of grammar is still underestimated in various EFL/ESL contexts, and grammar-oriented exams are explicit in practice rather than communicative instruction. As a consequence, many EFL/ESL learners are shown to be successful at grammar but yet cannot articulate fluently and precisely. The purpose of this paper is therefore to address grammar teaching, including the concepts and priorities of grammar teaching. It also discusses the positions and responsibilities of grammar in communicative language teaching (CLT) in the context of EFL/ESL. This paper also proposes several pedagogical consequences for teaching grammar in the sense of the EFL/ESL. This paper is hoped to contribute its part to highlight the role of grammar in the CLT and to shed more light on the inclusion of grammar teaching in the sense of the EFL/ESL.