THE STRUCTURES AND FUNCTIONS OF LEXICAL BUNDLES IN PAKISTANI BIOLOGY TEXTBOOKS

Abstract

This study investigated and explored the structures and functions of 100 common lexical bundles of four-word, considering the structural and functional classification of lexical bundles, defined by (Biber, 2004 , p. 381 - 384), which was used as the theoretical framework also. This study is a corpus-based study of the four-word lexical bundles taken from biology textbooks which are being taught at the Pakistani Higher Secondary School Certificate level (HSSC) in KPK. The specified corpus of these textbooks was run in the AntConc software to perceive and detached LBs in the corpus. The bundles were then analyzed and classified according to (Biber et al., 2004) structural and functional taxonomy of lexical bundles. Structural analysis showed that lexical bundles incorporating dependent clause fragments, verb phrase with passive verb and preposition phrase were the most corporate type of bundles produced by biology textbooks. In terms of the functions, the majority of the bundles served as discourse organizers and referential expressions. These discoveries have educational endeavors and can be utilized in English for academic and special purposes. Keywords: Lexical bundles, Corpus-based study, Pakistani academic textbooks, English language teaching, English for academic purpose.