This article discusses the phenomenon of hidden paradigmatic components caused by the tendency toward pragmatic simplicity, i.e. ellipsis, fragments, and seemingly complete sentences like "du baozhi" (read newspaper). It proposes that identification of such hidden components cannot be achieved by syntactic criteria alone. One can use various methods besides abbreviation to identify ellipsis and fragments, for example: analogy, relevant transformation, supplementation, quantitative balance, identification of the topic scope of a discourse statement chain, and the relationship between the follow-up sentence and topics. In the case of sentences like "kan baozhi," it summarizes the event information reflected by the hidden components as belonging to one of three patterns: A1(A2 A3...)+B, A+B1 (B2 B3...) and A1+B1(A2+B2, A3+B3...). These patterns guide the selection of linguistic forms of paradigmatic information.