N-is constructions combine a variable article and a shell noun such as thing, fact, or problem with copula be. As discourse markers at the left periphery, they focalize information that follows. Us...

中文翻译：

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N-is 聚焦器作为半固定结构：世界英语中的建模变化

N-is 结构将可变冠词和壳名词（例如事物、事实或问题）与 copula be 结合在一起。作为左边缘的话语标记，它们聚焦随后的信息。我们...