functional grammar 
noun [mass noun]
A theory of grammar concerned with the social and pragmatic functions of language, relating these to both formal syntactic properties and prosodic properties.Using the framework of systemic functional grammar, this study compares two modes of presenting the same scientific topic: in a physics textbook and in interactive teacher talk....
- Since your approach is based on Hallidayan functional grammar, isn't this arguably problematic position something you ‘inherit’ from this tradition?
- ‘The emphasis will be on functional grammar and these resource-persons will in turn train the teachers to better equip them in the teaching of English,’ he explains.