A widely assumed limitation on the distribution of negative polarity items (NPIs) is that they must be c-commanded by a trigger. Scrutiny of this limitation reveals, however, that c-command by a trigger is neither a necessary nor a sufficient condition on the distribution of NPIs. The failure of ccommand to serve as the basis for an account of the syntactic distribution of NPIs is taken here as the impetus to pursue an alternative approach, one in terms of scope and linear order instead of c-command. A particular concept of scope is established that serves as the key notion for characterizing the syntactic relationship between NPIs and their triggers. Scope is defined in a dependency grammar (DG) theory of syntax in terms of scope domains. The catena unit plays an important role. Given the notions of scope put forward, it is possible to discern two conditions on the syntactic distribution of NPIs.

中文翻译：

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范围域朝向负性项的句法分布的依从性语法说明

负极性（NPI）分布的一个广泛假定的限制是，它们必须由触发器以c指令控制。然而，对这一限制的仔细研究表明，由触发器触发的c命令对于NPI的分布既不是必要条件也不是充分条件。ccommand未能作为解释NPI语法分布的基础被视为采取替代方法的动力，这是一种在范围和线性顺序方面代替c-command的方法。建立了范围的特定概念，将其作为表征NPI及其触发器之间的句法关系的关键概念。范围是根据范围域在语法的依存语法（DG）理论中定义的。连锁部门发挥着重要作用。鉴于提出的范围概念，