The paper considers the problem of bilingualism and its effect on the personality of the speaker. Various types of bilingualism are described along with the factors determining the bilingual competence formation: age, individual experience, socio-cultural conditions of the native and foreign language interaction.  The author points out both the positive and negative impact on the native language as the result of the second language learning.

The special emphasis is on language interference in the process of learning a foreign language. To make sure the students achieve the adequate degree of its authenticity, and therefore the bilingual competence, the teacher should take into account the specificity of national styles, communicative strategies and speech tactics of both languages. A comparative analysis of linguistic differences of the English and Russian languages is demonstrated on the level of phonetics, vocabulary, grammar and national communicative stylistics. The author maintains that successful inter-language and cross-cultural communication requires the integrative cross-disciplinary approach, consolidation of the linguistic theory and methods of foreign language teaching.

1. Aleksandrova N. Sh. The native language, foreign language and linguistic phenomena, which have no name // problems of linguistics. 2006. № 3. p. 88-100.
2. Vinogradov In. A. Language and culture in their correlation and interaction // Language and culture: materials of the international scientific conference. M., 2003. p. 18-19.
3. SJSC In. Mr.. Language and culture: the language or culture? // Language and culture: materials of the II International scientific conference. M., 2001.
4. Гулида In. B. Petersburg sociolinguistics: fifteen years of development // Vopr. linguistics. 2010, № 2. p. 106-119.

5. Bloomfield L. Language. London, 1935.

6. Boileau A. Le probleme du bilinguisme et la theorie des substrats langues vivantes. Bruxelles, 1946.

7. Burkhard-Montanari E. Wie Kinder mehrsprachig aufwachsen. Frankfurt-am-Main, 2002.

8. Jampert K. Sprachforderung entsteht uber Beziehung und Aktivitat Treffpunkt deutsche Sprache Eine Tagungsdocumantation Projektheft 5. Munchen, 2001.

9. Olshtein E. The attrition of English as a second language with speakers of Hebrew // Language attrition in progress. Dordrecht, 1986.

10. Pallier C. et al. Brain imaging of languge plasticity in adopted adults: can a second language replace the first? // Cerebral Cortex. 2003. № 13. Р. 155–161.

11. Skutnabb-Kangas T., Toukomaa K. Teaching migrant children’s mother tongue and learning the language of the host country in the context of the socio-cultural situation of the migrant family. (UNESCO-Report). Tampere, 1976.

12. Schuchardt H. Kreolische Studien. Wien, 1888.

13. Weinreich U. Languages in contact: findings and problems. The Hague, 1963.