and for the analysis of lexico-grammaticality systems, Halliday's model were used. The results showed that 'Previous Study' and 'Purpose of Study' were the obligatory elements among the 11 types of generic structures. Furthermore, material process, declarative mood, the use of conjunctions in textual theme, and circumstantial adjunct were mostly used while no interpersonal theme was found in obligatory elements. The findings promise pedagogical implications for new writers and university students of different fields of study.
and for the analysis of lexico-grammaticality systems, Halliday's model were used. The results showed that 'Previous Study' and 'Purpose of Study' were the obligatory elements among the 11 types of generic structures. Furthermore, material process, declarative mood, the use of conjunctions in textual theme, and circumstantial adjunct were mostly used while no interpersonal theme was found in obligatory elements. The findings promise pedagogical implications for new writers and university students of different fields of study.