Introducing Form-Function Theory Evidence from the Post Position “ra” and Focus Marker “ke” in Persian

Traditionally in linguistics, there used to be trends to observe linguistic data from a definite angle; form or function. However, in modern linguistics, it has been fashionable to figure out a sort of interface between viewpoints such as syntax-pragmatic interface. There are elements in some languages which prompt the linguists to look upon them interactively and synchronously. Morphemes such as ‘ra’ and ‘ke’ in Persian necessitate an interactive scrutiny incorporating both formal and functional outlooks. Form-Function Theory introduced by Dabir-Moghaddam (2009) has facilitated the analysis of such elements. This article attempts to re-introduce this theory on the basis of evidence from Persian.