This monograph examines how language contributes to the social coordination of actions in talk-in-interaction. Focusing on a set of frequently used constructions in French (left-dislocation, right-dislocation, topicalization, and hanging topic), the study provides an empirically rich contribution to the understanding of grammar as thoroughly temporal, emergent, and contingent upon its use in social interaction. Based on data from a range of everyday interactions, the authors investigate speakers’ use of these constructions as resources for organizing social interaction, showing how speakers continuously adapt, revise, and extend grammatical trajectories in real time in response to local contingencies.