This article provides a review and summary of the principles of English teaching to achieve breakthroughs in teaching principles. The review of theories such as input-output theory, self-efficacy, and learned helplessness is not new, but it is useful. These principles are essential theories for guiding educational work, and we must learn them if we want to improve the quality of education. The quality of education in China will improve under the guidance of these theories and principles. Both the qualitative research and quantitative research methodologies must be employed if the desired purposes are to be reached.