A Investigation of Cohesion And Coherence Of An English Textbook Grade Xi: A Discourse Analysis

The objective of the study is to describe the cohesive devices, level of cohesiveness and relations of topic in the texts of an English textbook for Grade XI. The design used is qualitative, in which cohesive devices in each adjacency pair is described and analyzed thoroughly, and given a score for its level of cohesiveness based on parameter of Halliday and Hasan?s taxonomy on cohesion. Meanwhile, the topical subject of each sentence is identified and the topical progression of each paragraph is analyzed in order to determine the relations of topics in the texts in building coherence. The result indicates that all cohesive devices are used in the texts, with reference and substitution as the most and the least used device. It is found that three (3) texts are in medium and two (2) texts are in high level of cohesiveness. The relation of topics is in parallel progression (three texts or 60 %) and sequential progression (2 texts or 40 %). Distribution of type of progression is well-balanced across the texts, resulting in ease interpretation of topical discourse of each text. The study concludes that the 5 texts are cohesive, and that relations of topics in the texts are dominantly in parallel progression and sequential progression in the second, resulting in coherent texts