Since the theory of communicative competence was put forward by Canale and Swain,there have been teaching professionals developing it to different models,three of which are reviewed in this essay.
Academic writing has been emphasized for years among English major students,and PhD students who need to pub lish their work in English,but few of these people could produce essays academically. The key problem that they are faced with is argument,argumentation and critical thinking in academic writing. These three notions are reviewed and the followed teaching preliminary suggestions are presented in this essay.
