An analysis of grammatical errors upon students hortatory exposition text at SMAN 1 Baureno Bojonegoro

This study is conducted on analyzing grammatical errors upon students Hortatory exposition text at SMAN I Baureno Bojonegoro and the focus problems of this study is on sentence problems include: tenses (simple present only), article, conjunction, preposition, singular and plural, passive verb form, and sentence structure. The studying of students' errors in their sentences are needed because the result of this study will give some benefit thing on the effort of dealing with the students' difficulties. The purpose of this study are to classify the types of grammatical errors in Hortatory exposition text made by the students of the eleven grades of SMAN 1 Baureno Bojonegoro and to find the causes of errors in Hortatory exposition text of the students of eleven grades of SMAN 1 Baureno Bojonegoro. So dealing with those phenomena, this study is conducted to the theory of Dulay, it is based on comparative taxonomy and surface strategy taxonomy that consisted of omission, addition, malformation, and disordering and the theory of Richard, He stated that the errors were caused by two types; interlingua that was influenced by the interference of mother tongue and intralingua that was influenced by the general characterized of the rule learning as over-generalization, ignorance of the rule restrictions, incomplete application of rules and false concept hypothesized. Furthemore, the design of t is study is descriptive research design and the result of this study shows that the students still make a lot of errors in producing Hortatory exposition writing, they still face the weakness in applying and understanding the English grammar especially sentence structure and the use of simple present tense. Most of the kind of errors that studied in this study, sentence structure was the highest percentage of errors occurred. And the highest types of error occurred was malformation errors, they generally use the wrong form of the morpheme or structure so that it creates misaddressing. Then the most frequently errors were caused by Over generalization, it means that the students produced the wrong structure in their target language, they might still have less understanding on choosing the structure, so it make them generalize the rule structure in their declarative sentences. On eventually, this study is hoped to give some concrete information to the English teachers and the students, and it is hoped giving some better changes in the process of learning english especially in composing a good English writing.