[Abstract：Due to the enormous educational researches on English language teaching， and the growing understanding of language learning process， pedagogical approaches of teaching English as a second language， guided participation and collective argumentation for instance， have been gradually improved， revised and developed. Three welcomed pedagogical approaches – group collaboration， scaffolding and explicit instruction –are critically analyzed in this essay， along with the underpinning theories. After the evaluation， learners’ differences and cultural influence are mentioned in order to alert teachers when they make their choices of what and which pedagogies. It is obvious that no approach is the best or the most appropriate for teaching second language. Thereafter， teachers should monitor the class regularly and adjust what they use accordingly， to guarantee that it is the most suitable for his/her class.
　　Key Words：Evaluation;Pedagogical Approaches;TESOL]
　　Group Collaboration
　　Group collaboration is believed to be one of the most effective and useful ways of learning a second language. It is also the fact that in language teaching， group collaboration can frequently be found in forms of peer learning， group discussion，peer review or group activities. In this approach， learning takes place through interaction which is the central idea of the socio-cultural theory. Socio-cultural theorists regard learning as essentially social and entangled in use and interaction （Mitchell