language interference; Russian-speaking migrants; Russian language; Czech language; bilingualism; spoken language; prepositional-case constructions; case government; grammatical interference; speech errors.

V stat'e rassmatrivaetsya yavlenie yazykovoj interferencii v ustnoj russkoj rechi russkoyazychnyh migrantov, prozhivayushchih v CHekhii, s osobym vnimaniem k oshibkam v predlozhno-padezhnyh konstrukciyah. Issledovanie sosredotocheno na vliyanii cheshskih grammaticheskih modelej na russkuyu rech' i voznikayushchih vsledstvie etogo otkloneniyah ot normy russkogo yazyka. Material byl sobran na osnove spontannoj rechi russkoyazychnyh respondentov v vozraste ot 18 do 45 let, prozhivayushchih v CHekhii bolee pyati let. Vsego bylo zafiksirovano bolee vos'midesyati leksicheskih konstrukcij, iz kotoryh dlya podrobnogo analiza byli otobrany dvadcat' naibolee chasto povtoryayushchihsya primerov. V issledovanii primenyayutsya morfosintaksicheskij i chastotnyj podhody; oshibochnye russkie konstrukcii sopostavlyayutsya s ih normativnymi russkimi ekvivalentami i sootvetstvuyushchimi cheshskimi strukturami. Provedyonnyj analiz pokazyvaet, chto naibolee chastotnye oshibki voznikayut v rezul'tate mekhanicheskogo perenosa cheshskih predlogov i padezhnogo upravleniya v russkij yazyk. Takoj perenos mozhet privodit' k nevernomu vyboru predloga, nepravil'nomu upotrebleniyu padezhnoj formy ili poyavleniyu izbytochnyh predlozhnyh konstrukcij. Poluchennye rezul'taty podtverzhdayut, chto predlozhno-padezhnoe upravlenie yavlyaetsya odnoj iz naibolee uyazvimyh oblastej russkoj grammatiki v usloviyah dlitel'nogo cheshsko-russkogo yazykovogo kontakta i bilingvizma.

The article examines linguistic interference in the spoken Russian of Russian-speaking migrants residing in the Czech Republic, with particular attention to errors in prepositional-case constructions. The study focuses on the influence of Czech grammatical patterns on Russian speech and the resulting deviations from standard Russian usage. The material was collected from spontaneous speech produced by Russian-speaking respondents aged 18–45 who had lived in the Czech Republic for more than five years. More than eighty lexical constructions were recorded, of which twenty of the most frequently recurring examples were selected for detailed analysis. The study applies morphosyntactic and frequency-based approaches and compares non-standard Russian constructions with their normative Russian equivalents and corresponding Czech structures. The analysis demonstrates that the most frequent errors result from the mechanical transfer of Czech prepositions and case government into Russian. Such transfer may lead to an incorrect choice of preposition, inappropriate case forms, or redundant prepositional constructions. The findings confirm that prepositional-case government represents one of the most vulnerable areas of Russian grammar under conditions of prolonged Czech-Russian language contact and bilingualism.