This research generally aims to provide a reference regarding the analysis of grammatical errors in students' English narrative essays. In particular, the purpose of this study is focused on describing the forms of grammatical errors and identifying the factors that cause grammatical errors made by the eleventh-grade students of SMA Dwijendra Denpasar in writing narrative texts. The method in this study is a descriptive method with a qualitative approach. Further, the data from this study were collected by using the simak and the interview method to obtain information about the forms and factors of errors in students' narrative writing. Furthermore, this research data was analyzed qualitatively based on the taxonomy of linguistic categories proposed by Dulay et al. (1982) which focused on the linguistic components of morphology and syntax. Meanwhile, the factors that cause language errors were analyzed by the theory proposed by Richard (1970). Then the analysis of this research is presented in an informal method. Based on the results of the study, the forms of grammatical errors of the students, include the morphological category such as; indefinite errors, cases of misuse of possessive forms, errors of using verbs for the third person singular, simple past tense errors, and past participle errors. Afterward, the syntax error categories such as; noun phrase errors, prepositional phrase errors, verb phrase errors, errors in the use of progressive tense where students replace the suffix '?ing' with simple verb forms, the suitability of the subject with other words and word order. In addition, Factors that influence the existence of grammatical errors in English narrative essays for class XI students of SMA Dwijendra Denpasar include the influence of elements or rules of mother tongue in the second language and errors made by the learner due to the complexity of the rules of the language he is studying, such as; cases of overgeneralization, neglect of the boundaries of language rules and errors in concept hypotheses.

Error Analysis

Factor of Errors

Grammatical Errors