The system rules and a mechanism for combining and composing a sentence to use a descriptive grammar is a tool that shows the help learners understand the format and meaning of the language.
System, rules and mechanisms to mix and remix the sentence is up to interpretation. Grammar is a connotation. Helps students understand the format and semantics of the language.
The rule system and mechanism combination and compiled a sentence words up to meaningful use. Grammar is the tool that shows the meaning. To help students understand the form and meaning of language.