Abstract:
This research deals with the derivational affixes errors in writing narrative paragraph by eleventh
grade students. This research uses a qualitative design in which the data are taken from the
sentences of paragraps. Dulay’s theory is applied to describe the type of errors on derivational
affixes. The source of data in this study is Grade (XI) students of Madrasah Aliyah Al
Usmaniyah, 30 students are choosen as the sample. The data of this study is taken from the
students’ writing narrative paragraph. The analysis foound that there are four classification of
errors occured in students writing: they are omission 10 cases, addition 4 cases, misformation 11
cases and misorder 13 cases. The most dominant error in derivational was misorder 34%,
misformation 28%, omission 26% and addition10% . It this hoped that the result of this
research is useful for everyone who wants to study or make a similiar research about affixation
errors.
