Identifiable relational entities in the Auxiliary (Aux) structure of Nonstandard Negro English (NNE) enter into different sets of relationship from identifiable relational entities in the Aux structure of Standard English (SE). Specifically, there is an absence of "have + en" structures; there is no agreement between subjects and verbal forms other than "be"; "-ed" and unmarked verbs traditionally identified with SE present tense may be neutralized; and "be" functions as a tense. These facts about NNE raise problems about the ways we might account for differences between SE and NNE and about accounting for differences between language varieties in general. (Author/DO)