Abstract One of the main challenges for research in the field of Phraseology is to discover how phraseological combinations can be integrated into the grammatical rules they seem to contradict. This paper explains some theoretical concepts which may shed some light on the relation between regular syntax and phraseological fixedness. Firstly, we explain how the concept of grammatical metaphor, applied to phraseology, allows to distinguish phrasemes from free combinations, and also to separate the phrasemic subclasses from one another. Secondly, we analyze the different degrees of fixedness of phrasemes in terms of functional idiomaticity, as a consequence of grammatical metaphor, resulting from the relation between the inner and outer syntax of the phrasemes, which is parallel to their semantic idiomaticity. Thirdly, we focus on some particular cases of this mechanism, such as discontinuous, interlocking and overlapping phrasemes, as well as the so-called open-slot idioms. We conclude that the application of grammatical metaphor to phraseology brings up to surface a parallelism between idiomatic meanings and idiomatic structures, which is an essential property of phrasemes.

中文翻译：

---

语法隐喻和功能惯用性

摘要短语学领域研究的主要挑战之一是发现短语组合如何整合到它们似乎矛盾的语法规则中。本文解释了一些理论概念，这些理论概念可能会阐明常规语法与短语固定性之间的关系。首先，我们解释语法隐喻的概念如何应用于短语学，以区分自由组合的短语，以及如何将短语子类彼此分离。其次，由于语法隐喻的产生，这是由于短语的内在句法和外在句法之间的关系与语义惯用性平行而导致的，在功能上的惯用性方面，我们分析了短语的不同程度的固定性。第三，我们将重点介绍这种机制的一些特殊情况，例如不连续，互锁和重叠的短语，以及所谓的开槽成语。我们得出结论，语法隐喻在短语学中的应用使习语意义与习语结构之间的平行性浮出水面，这是短语的本质属性。