Communicative Language Teaching (CLT) involves learners in real-life communication to enhance their communicative skills. Learning becomes more effective, and students are more engaged when teachers create opportunities that align with their needs. This paper aims to focus on the role of grammar and grammar instruction in second language teaching over the past several decades, presented chronologically. It examines the current state of second language teaching, emphasizing the concept of grammar in Communicative Language Teaching (CLT), and highlights the distinctions between CLT and other approaches regarding grammar. It also explores future trends in language education. Finally, it summarizes overall trends in grammar teaching and discusses the prospects of English language instruction in the near future in the conclusion.