Abstract:
The purpose of this article is to present the result of bilingualism on third language acquisition or additional second language acquisition. The researcher gathered the bilingualism consequences from the studies in various dimensions. The distinct perspectives include language competence, communication, cognition, brain system, and metalinguistic awareness. The article demonstrates both positive and neutral influences on new language learning. It is to understand and to perceive bilingual language learners conditions which involve numerous factors. The article would start with the aim and importance, theories, influences of bilingualism on language competence, its effect on metalinguistic awareness, cognition and brain system, and neutral influences of bilingualism.