modal auxiliary verb

1. And the fourth one is a specific comparison on some certain devices of conveying mood, such as modal or auxiliary verb, adverb, intonation, word order.
   第四章是从微观角度对具体语气表达手段进行对比，比如情态动词、助动词、副词以及语调、语序等，得出语气的表达和实现方式多种多样。

noun

1. an auxiliary verb (such as `can' or `will') that is used to express modality

   Synonym:    modal auxiliarymodal verbmodal