Based on previous researches on the influence of different input and output modes of SLA . This study aims to find more effective learning methods.

1.2 Significance of the Study

Because of the significant educational value of learning result, the focus on learning speed has always been the focus of attention for school teachers and learners.

First, such research allows us to understand the importance of mistakes better in the learning process (Liang,2009). It can help us to understand the expectations of students at each stage of development and arrange different courses appropriately. Second, students can understand the importance of learning efficiency better, so as to consciously improve their own learning methods. This is a great help for students to improve their own language learning.

Thirdly, based on the study, more and more scholars provide valuable teaching experience for the domestic second language teaching, which has a great role in promoting the further development  of second language teaching.

1.3 Structure of the Thesis

The paper includes five sections. The present section serves as an introduction,  showing  the research background, significance of the study and the overall structure of the paper. Section Two is the literature review which includes related theories and some scholars’ researches. Section Three is the methodology part, introducing the specific research questions, and describing the participants involved as well as the instrument adopted and the ways the data were collected and analyzed.The next section introduces the results. The last section is a summary of the major findings.

2 Literature Review

The research of the mode of language input and output as an integral part of the second language acquisition has attracted attention at home and abroad.

Xiao Ying (2009) reviewed some important theoretical and empirical research results and to some extent confirmed Krashen's comprehensible input hypothesis and Swain’s the  comprehensible output hypothesis.

Wang Xiaoru (2010) referred that what we want to point out is that these features should be borne in mind. The immediate implication of this hypothesis is for English language teachers to provide the learner with optimal input and also encourage him to explore optimal input on their own outside classroom. If teachers could employ this strategy in their teaching, they should find their teaching more effective.

Gao Ying (2009) mentioned that classroom interactive discourse is the focus of second language acquisition research. The research on cognitive perspective is based on input, output and interaction hypothesis, and uses static micro quantitative analysis to focus on the inpidual and interaction of students. The research under the view of social culture is based on the recent development zone and the concept of support, and uses the qualitative analysis of dynamic combination of macro and micro, focusing on interaction between teachers and teachers, focusing on the meaning, form and structure of interaction territory. The author believed that the ideal development trend is the organic integration of the two researches.

Liu Xuehui (2007) proposed the concept of "consultation" in the article "Consultation interaction and real-time output: classroom language learning", and pointed out its function, which directly affected the quality and quantity of input and output of target language; The characteristics of interaction and the learner 's target language (real - time output). The study found that the surveyed teachers adopted a variety of consultations initiated by the way, generally increase the opportunities for students to export, but not all can effectively improve the number and quality of student output. At present, teachers should wait for the acquisition of their own, or through interventions to speed up the acquisition and other issues had to in-depth study.