This article is analyzed quantificationally and qualitatively.Firstly,we try to get the distribution and proportion of different
errors by numerous data;Secondly,we divide the errors into eleven types in order to make
concrete analysis,especially the errors with
fossilization characteristics.We will set forth the origin and form of the errors and analyze the negative and positive transfer by their mother tongue.At last we get the emphases and difficult items in the process of teaching middle level and high level Korean students.At the end of the article,we set forth some concrete principles in grammar and vocabulary teaching.rectomy or quadrant-ectomy and axillary nodes dissection followed by intro-or after operation btachytheray of the tumor bed and total breast irradiation+chemtherapy.Median follow-up was 42 months (Minimum 10 months;maximun,94 months).Results All patients were alive without local recurrence.Metastasis of bone was found in one patient.There was no late side effect in the breast and lung.Good cosmesis was noted in all of the patients except one.One case was bilateral breast cancer.Both of sides were received breast-conserving surgery.Conclusion Breast-conservng surgery and radical radiation therapy is effective for patients with early stage of cacinoma of breasts.