Teaching Grammar is the system of language that governs the conventional arrangement and relationships of words in a sentence (Brown, 2001). Cook (2008) adds to this definition that grammar is a central part of language in which other parts such as pronunciation and vocabulary revolve.
Cook (2008) differentiates four types of grammar; the first is prescriptive grammar which is the rules found in schoolbooks and, as the name says, it prescribes what people ought to do. Prescriptive grammar deals with the reasons why some grammatical forms are “better” than others but just based on certain criteria instead of grammar itself. This kind of grammar is at some point considered as obsolete since language should be taught as it is not as an artificial form that nobody uses.