Abstract
The necessity of the study of mistakes of bilingual students in the use of nominal parts of speech is grounded in the article, it provides valuable material for scientific and methodological conclusions, as these mistakes reflect linguistic, psychological and pedagogical aspects that affect the ability of schoolchildren to learn peculiarities of using nominal parts of speech of Russian language. In this regard, ascertaining experiment with pupils of schools with native teaching language was held. Students were offered the tasks based on formation of the four types of competence: language, linguistic, communicative and cultural. The results of the experiment made possible to reveal numerous mistakes in using nominal parts of speech in oral speech and in writing of students. These mistakes are a consequence of the complexity of semantic and grammatical nature of the names in the Russian language, of interfering influence of the native language and as well are explained by the imperfection of the content and methods of teaching nominal parts of speech at school