只是用词和一些小毛病,大的句法就不改了,能传达大意就行
Dear Mr.Director：
I have learned that you are employing a Marketing Clerk.I am very much interested in the job.
I graduated from the Yanbian University with a bachelor degree and I majored in International economic and trade.I studied hard and paticipated many campaigns and society practice to develop myself in all-round .I cultivated the ability of logical analysis and operational by joining many campaigns.I have learned the importance of teams spirit and how to communicate with others,how to work well with others,how to be a leader from these experiences.All this made me full of confidence to work in future.