Abstract: The two possibilities in the governing scope ofbei in the passive sentence-pattern: “NP₁＋bei+NP₂+VP₁+VP₂” cause the existence of two grammatical relations in “bei+NP₂+VP₁+VP₂”. When beigoverns “VP₁” only, “bei+NP₂+VP₁+VP₂” is a structure of successive predicates; when bei governs boty “VP₁” and “VP₂”, “bei+NP₂+VP₁+VP₂”is of an endocentric adverbial structure. Different semantic relations of agentive and objective also exist between “NP₁” “NP₂” and “VP₁” “VP₂” of the above-mentioned structures.

Key words: passive, agent, objective, grammaticalrelation, structureofsuccessivepredicate, endocentricadverbialstructure