Abstract: Impersonality，in the sense that Subject or Agent Prominence can be diminished, is prevalent among languages.Yet the internal mechanisms and formal realizations are far from identical.For languages which attach much importance to GRs (grammatical relations) or SRs (semantic roles)，atypical Subject or Agent properties are generally discernible through case marking, indexation or other morphosyntactic means, but for Sinitic languages, which attach more importance to PRs (pragmatic relations)，impersonality can be prompted through some pragmaticallyoriented constructions, where PRs exceed GRs or SRs in alignment of syntactic constituents.Such characteristics enable us to distinguish some Sinitc types of impersonality from those previously known.