This research is a descriptive study of four contrastive discourse connectives in Turkish. The main aim of this study is to analyze the connectives with respect to their meaning and predicate-argument structure and lay out the similarities and differences among contrastive discourse connectives with the help of quantitative analysis. Although the study is limited with contrastive connectives, it will have implications on how to resolve discourse structure in general and illustrate how lexico- syntactic elements contribute to discourse semantics. Key words: Discourse, Contrastive Connectives, Predicate-Argument Structure, Cohesion, Information Structure