An analysis on students� grammatical errors in writing descriptive paragraph. A case study at the second grade of SMPN 3 Tangerang Selatan

This study was carried out to analyze and to classify the types and the sources of student�s grammatical errors in writing descriptive paragraph. The error collected was classified based on Corder�s theory. Besides, the purpose of this study was to find out their frequency of in writing descriptive paragraph. The method used in this study was qualitative. The qualitative design applied in this study was a case study. Furthermore, the subject of this study was second year students of 8.8. The writer took 30 students as the sample. The data were collected through test. The result of the error analysis process showed that students committed error into four types: omission, addition, selection, and ordering. From the frequency of each error types, selection was the error which most frequently produced by the students. It took 57.9% of the total errors. Moreover, 29.8% errors fell into error of omission and 7.6% errors fell into addition; whereas, for Misordering, it only took 4.7%. To sum up, it showed that the usage of the grammar in writing descriptiveparagraph is difficult for student