The Turkish Language in diaspora is in process of change due to different Language
constellations of immigrants and the dominance of majority Languages. This led to a great
interest in various research areas particularly in linguistics. Against this background this
study focuses on developmental change in the use of adverbial clause-combining constructions in
Turkish-German bilingual students' oral and written text Production. It illustrates the use of
non-finite constructions and some unique alternative strategies to express adverbial relations
with authentic examples in Turkish and German. The findings contribute to a better
understanding of how bilingual competencies vary in expressing adverbial relations depending on
Language contact and extra-linguistic factors.