Students should interact with their teachers and their peers in the class activities。 They practice the language they have learned in different kinds of contexts, they can develop and construct language skills of all aspects。 It is a procedure way to include interactive technique and activities to learning。 Under the influence of communicative language teaching theory, classroom teaching process itself is a kind of communicative activity。

3。 The Theoretical Basis of Constructivism

“Constructivism believes that learning is not only the transmission and transfer from the learners’ outside to the inside, but also the process of the learners to construct their own knowledge and experience actively, i。e。 the interaction of the new experience and existing knowledge experience repeatedly, to enrich and transform their own knowledge and experience。 ” (Zhang 34) A learner needs to make the adjustment and transformation of some original experience from himself according to the new inpidual experience at the same time。 That is the unity of assimilation and accommodation。

Constructivism is one of the most popular topics of the education sector in 80s, also the educational psychology theory after behaviorism and cognitivism。 It reveals a better human cognitive law in the process of learning。 “Constructivism believes that learning is an active process of construction, the learner is not passive but active external information which based on previous cognitive structure and selective perception of external information。 It constructs the meaning of constructivism, bidirectional and persity characteristics。”(Wu 37) “The constructivism learning theory holds that the students are the subject of study and the active construction of knowledge meaning。 Teachers only play the role of organizers and helpers。 The process of learning is the process of meaning construction, which is also the process of interaction, and the process of self diagnosis and reflection。 ” (Shao 72)

Socialism under the constructivism argues that children are born in a social world。 “The theory of social interaction emphasizes the dynamic nature of the interaction between teachers and teachers, students and tasks。 It suggests that learning generates in the process of interacting with others。” (Williams & Burden 35) Through interaction, we formed our own views of different things in the world。 So I find the theoretical basis for interactive teaching in the theory of social interaction under the constructivism。 This theory believes that we learn language by using it to interact with others。 The two most famous representatives of this theory are Vygotsky and Reuven Fuerstein。 “The core concept of Vygotsky and Fuerstein's view of psychology is mediating。 Social interaction psychologists use this term to refer to the role of important people in learners’ life。 They can promote the learners’ learning process by selecting and shaping the learning experience。”(Williams & Burden 32) In general, the secret of effective learning exists in the social interaction between two or more people with varying degrees of knowledge and skills。

Students are not passive recipients, instead, they should construct the meaning of the information interactively。 This construction cannot be separated from the teacher’s teaching process or replaced by teachers。 The input of knowledge experience and the growth of experience system in a certain environment from the inside to the outside are both of students’ learning, while the latter is more important。 Students are motivated differently。 They will act on their own ways according to their unique environment。 To adapt this tendency, we must pay more attention to students rather than teachers, i。e。 from the teacher center to student interaction。 Students can participate in teaching more actively, realize the construction of the meaning of knowledge and master the ability of language communication more easily according to the changes。 At the same time, the emphasis on student center does not aim to weaken the roles of teacher, it plays the leading role of teachers better。 Teaching activity is the unity of teachers and students。