Establishment of Second Classroom in College English Based on Interlanguage Theory

Interlanguage is the language system which is used by learners in the two languages/foreign language learning process,and the system between mother tongue language and purpose language.Interlanguage possesses the characteristics of both the mother tongue language and purpose language of learners,and gradually close to the purpose language.Interlanguage theory achieves a fundamental change in the direction of from a teaching-centered perspective to a learning-centered perspective,and provides a theoretical basis for establishment of second classroom in college English.