GRAMMATICAL ERRORS ON STUDENTS’ ANALYTICAL EXPOSITION WRITING

This study deals with grammatical errors on students’ analytical exposition writing. This study was conducted by using qualitative design in which the data were taken from the students’ writing. The population of the study was the students of grade XI Science 1 of SMA Negeri 3 Tebing Tinggi about 32 students in 2015/2016 academic year. The data of the study were obtained from the students’ writing test. The analysis found that: 1) There are four types of errors; namely omission: 135 cases (33%); addition: 103 cases (25 %); misformation: 143 cases (35 %) and misordering: 29 cases (7 %). 2) The dominant type of errors made by the eleventh grade students in writing analytical exposition text is misformation. 3) The causes of errors; Interlingual transfer contributes 56.34 % and intralingual transfer contributes 43.66 %. All types of intralingual occurred with the occurance presentation; overgeneralization contributes 38 %; ignorance of rule restriction 4%; incomplete of rule application 32 % and false concept hypothesize 26 %.