Words classified as ‘interjections’ tend to be treated in descriptive grammars as outside of morphosyntax, too contextually bound to warrant a systematic description of their syntagmatic relations....

中文翻译：

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走向感叹词的互动语法：用四种澳大利亚语言表达同情心

被归类为“感叹词”的单词往往在描述性语法中被视为形态句法之外的单词，太受上下文限制，无法保证对其组合关系进行系统描述......