【正文】
thinking. The influence of L1 thinking in L2 writing should also include the cognitive processing process of various stages of L2 output (L2 writing).In order to reveal clearly the bilingual nature of L2 writing process, explore the influence of L2 level on the amount of L1 thinking and define the functions of L1 thinking in L2 writing process, the present study investigates the writing processes of twenty junior English majors by means of Think Aloud and retrospective review. The thinking processes of the twenty students in a picture position task are recorded and made a quantitative analysis. It aims to find out how these student writers use their L1 when posing in L2 and to what extent their use of L1 is affected by their L2 proficiency. Through qualitative analysis of the results, two flow charts, which are discourse flow chart and thinking flow chart, are established. Discourse flow chart is the overall organizational structure of the article, which is carried out step by step in the form of modules. Thinking flow chart is to discuss the influence of L1 in difference thinking processes of L2 writing. The biggest influence of L1 in L2 writing is its three functions in cognitive processing, namely, understanding media, retrieval media as well as formal judging and analysis media. The pedagogical implications of