Based on the discrepancies found in many Malaysian English language textbooks, a detailed analysis on the way modal auxiliary verb forms and their semantic functions were introduced and presented in texts and exercises in five Malaysian textbooks was done. For that to be achieved, a qualitative page-by-page content analysis was applied. From the discussion of the grammatical progression in the textbooks, we can see that the presentation of modal auxiliaries in Malaysian English language textbooks is not fully in accordance with their use in natural English. Besides that, although recycling modal auxiliaries throughout different levels in order for the students to fully grasp their various meanings is advised by many linguists, we could see that Malaysian textbook authors used only a few of the same modals to express repetitive semantic functions. Accordingly, changes are recommended in order to bring the English taught in textbooks into accordance with real-life language use.