The section ‘Current Issues of Grammar Studies: Russian and Slavonic Studies’ discusses controversial issues of grammatical system; parts of speech and morphological categories; semantics of morphological categories; morphological categories as a means of organising the text; stylistic resources of grammar; role of morphology and syntax in organising а text; sentence as a communicative unit; registers of speech and their linguistic units; conceptions of grammar; functional grammar; controversial issues of informative structure of a sentence; current processes in grammatical system of the Slavonic languages; colloquial speech and its correlation with the standard literary language; grammar of the colloquial speech and their reflection in a literary text; expressive syntax and its dynamics in the Slavonic languages; linguistic analysis of a text; textual categories; syntax of the prose of late 20th – early 21th centuries.