Abstract The aim of this study was to explore lexical bundle use in four moves within abstracts of medical research articles (RAs) and to investigate the relation between bundles and moves. Lexical bundles were identified, and bundle structures and functions in each move were compared and analysed. Four-word bundles in medical RA abstracts were characterised by considerable overlap. The majority of lexical bundles were specific to only one move. There was no significant difference in bundle structures in types across moves, but there was a significant difference in tokens. There was a significant difference in bundle functions in both types and tokens. These differences may be attributable to the rhetorical functions of each move, which reflects a relation between lexical bundles and moves. These findings suggest caution in considering the bundle features of medical RA abstracts as a whole, since bundle variation across moves needs to be taken into consideration.

中文翻译：

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医学研究论文摘要中各个动作的词法束变化

摘要这项研究的目的是探讨医学研究论文摘要（RA）中四个动作中的词汇束用法，并研究束与动作之间的关系。识别词法束，并比较和分析每一步中的束结构和功能。医学RA摘要中的四字束具有相当大的重叠性。大多数词汇束仅特定于一招。跨移动类型的束结构没有显着差异，但是令牌的存在显着差异。捆绑功能在类型和令牌上都存在显着差异。这些差异可能归因于每个动作的修辞功能，这反映了词法束与动作之间的关系。