Key word "grammar acquisition"

The article is concerned with the bio-cognitive approach to the notion of language grammar, its acquisition and the phenomena of grammaticality, grammar forms and constructions. In setting out the basic principles of the traditional conception of grammar from a diachronic perspective, the author reveals its drawbacks and proceeds to describe the alternative vision of grammar within the scope of bio-cognitive and semiotics-related researches into the nature of language.

Key words: and phrases: bio-cognitive approach, grammar acquisition, languager, cognitive structure, grammatical construction.