This study uses a minimalist approach to explore the syntactic structures of teachers at the undergraduate level. It aims to find null subject(s) used in the sentence structure of lecturers who teach English in undergraduate classes. For the data collection, two universities of Federal territory in Islamabad were chosen by the researchers. The lectures [of English teachers] delivered in classes were recorded through an audiogenic device which was transcribed word by word manually. The data were analyzed qualitatively and quantitatively. In qualitative analysis, the transcribed material was analyzed with the help of parsing and a tree diagram. In quantitative studies, the occurrences of the syntactic parameters are shown with tabulations. The data analyzed reveals that the undergraduate teachers use language with three types of null subjects in their syntactic structures, i.e., Imperative Null Subject, Non-finite Null Subject, and Truncated Null Subject. The minimal sentence structure pairs impact a different level of language, changing its dimensions.