以往对打断的研究甚少关注其动态生成机制。本文以帮助类合作型打断为研究对象，在关联理论和礼貌原则视域下对其生成过程做了全面解读。研究发现，帮助类合作型打断是打断者在礼貌原则的指导下对推断出的被打断者的交际信息与交际意图实施帮助的言语交际行为。这一过程牵涉两方面的语用表现：1) 话题参与意识：确认被打断者的言谈话题；2) 他者意识：满足被打断者的事务性动机。本研究深化了打断的认识，能够为未来研究提供启示。

Previous studies on interrupting have paid little attention to its dynamic generating mechanism. This paper, taking assistance-type cooperative interrupting as the research object, has made a comprehensive interpretation of how it is generated from the perspective of relevance theory and politeness principle. It is found that assistance-type cooperative interrupting is a verbally communicative behavior in which the interrupter, governed by the politeness principle, assists the interrupted person in conveying communicative information and intention based on the assumed understanding inferred. This process entails two pragmatic manifestations: 1) the awareness of participating, namely, confirming the conversational topic initiated by the interrupted person; 2) the awareness of caring for others’ needs, namely, satisfying the transactional motivations of the interrupted person. This study deepens the understanding of interrupting, which can provide inspiration for future research.