The manner is a semantic category and there is a grammatical hierarchy in it.

方式是一个语义范畴，方式状语范畴内有一个语法等级。

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A morpheme is the minimal distinctive grammatical unit, and is the lowest unit grammatical hierarchy.

词素是最小的辨别语法单元，也是语法层次中最低级的单元。

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Patient object is also a proto-category like other grammatical categories, so it shows a rank hierarchy for the degree of prototypicality on patientivity.

受事宾语像其他语法范畴一样也是一个典型范畴，因此，受事宾语在受事的典型性上也就存在着强弱差别。

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