The way speakers in multilingual contexts develop own varieties in their interactions sheds
light on code switching and multimodal dynamic co-constructions of grammar in use. This volume
explores the intersection of multimodality and language use of multilingual speakers. Firstly
theoretical frames are discussed and empirical studies involving Catalan German and Spanish as
L1 L2 or FL are presented interconnecting verbal and gestural modalities into grammar
description or exploring actions as sources for gestures which may nonverbally represent the
argument in German dynamic motion verbs. Other chapters focus on positionings in interviews
lexical access searches or proxemics in greetings and farewells. The contributions secondly
focus on verbal features of language use in multilingual contexts related to
self-representation and co-construction of identity through code-switching deixis or
argumentative reasoning in different communicative events based on multilingual data of
languages including Croatian English Italian Brazilian-Portuguese and Polish. The findings
call for a reviewed conception of grammar description with implications also for the
conceptualization of deixis for L2 foreign language acquisition and language teaching
policies.
