Grammar is important in teaching languages. Learners who are serious about learning a foreign language think that grammar is the most important in learning a language. They believe when they understand the grammar or system of a language they are learning, they will have the knowledge needed to analyze their own writing or others. In addition, knowing grammar helps learners improve their comprehension of texts of a target language, especially when they need to translate a second language into or out of their mother tongue.  The teaching of grammar from rules is presented in the deductive approach. Apart from the deductive way of teaching, there is inductive learning in which grammar can be taught by having learners discover the rules themselves. This paper presents an in-depth study of a critique of different approaches to the teaching of grammar.