Interference term first used by Wenreich (1953) to refer to a language system changes with respect to the contiguity of these languages with elements of other languages by bilingual speakers. Speakers who are bilingual speakers who use two languages interchangeably and multilingual speakers, if any, of speakers of many languages that can be used interchangeably. However, the ability of each speaker to the B1 and B2 are very varied. There are speakers who master the B1 and B2 as well, but some are not, in fact there is very little ability to B2.
Interference in the event the use of elements of other languages in the use of a language, which is regarded as a mistake because it deviates from the rules or the rules of the language used. If traced the cause of this interference is is up to the ability of the speakers in a particular language so that he was influenced by other language support. Usually this happens interfernsi in using the second language support (B2), and the interference into the second language is the first language or mother tongue.
