This article argues for the existence of obligatory clausal DP shells: a structure in which an embedded CP is directly dominated by a projection of D. While this structure has been proposed in previous literature, it poses a theoretical problem, since according to one theory of well‐formed extended projections, a D head can only occur in the extended projection of a noun (Grimshaw 1991,2000). A careful investigation of embedded clauses in Ndebele—verb‐complement, noun‐complement, and relative clauses—points to the conclusion that the grammar must allow base generation of direct clausal DP shells.

中文翻译：

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Ndebele的强制CP名词化

本文讨论了强制性子句DP壳的存在：一种结构，其中嵌入式CP直接由D的投影控制。尽管这种结构在以前的文献中已经提出，但由于根据一种理论，提出了一个理论问题。格式良好的扩展投影，D头只能出现在名词的扩展投影中（Grimshaw 1991,2000）。仔细研究Ndebele中的嵌入从句（动词补语，名词补语和相对从句）可得出以下结论：语法必须允许直接子句DP壳的基础生成。