Grammar may be defined as the rules of a language, governing the way in which words are put together to convey meaning in different contexts. (Nesamalar Chitravelu; Sararatha Sithamparam & The Soo Choon, 2005)
Grammar is generally a thought to be set of rules specifying the correct ordering of words at the sentence level (Nunan, 2003) Grammar is a description of the rules that govern how a language’s sentences are formed (Thornbury, 2008)