Based on Halliday and Hasan’s taxonomy of cohesive devices,the author investigates the deficiency of cohesive awareness of subjects through the analysis of questionnaires,interviews and problems existed in writing samples,and then the efficiency of applying cohesion theory to English teaching is examined through the data analysis of the results of the pre-test and post-test by SPSS Statistics 17.0.At last,the author draws the conclusion that applying cohesion theory to English teaching can,to a great extent,foster students’awareness of textual cohesion,develop their writing strategies,and improve their abilities of reading comprehension.
