2。3 Theoretical Basis

2。3。1 Interaction Hypothesis

The interaction hypothesis is a theory of second language acquisition, which points out that the development of language skills is promoted through face-to-face interaction and communication (Johnson, Keith; Johnson, Helen, 999)。 This idea existed in the 1980s, but is usually credited to Michael Long for his 1996 paper The role of the linguistic environment in second language acquisition。 Interaction hypothesis has two forms: a strong form and a weak form。 The strong form is the contribution of interaction itself to language development。 The form of weakness is that interaction is only the way learners find learning opportunities, whether or not they are using them effectively。