Constructions in oral communication are characterized by interactive,linear and emergent syntax.Corpus-based research shows that the construction[SEHEN_{+(Pron.Nom.)+(Part.)}]("schauen wir mal") in modern German has different organizational functions:focus shifting,turn maitaining,pre-closing and pragmatic functions:delegating responsibility,passive delaying,active intervening.The construction acts as the mental frame for communicators to produce and understand utterances during the conversation; and it is influenced by the emergent sequential context while its pragmatic meanings are realized through interactions between communicators.