This monograph addresses two issues, phases and adverbials. It proposes that there is a correlation between the phase structure, the tripartite quantificational structure and the information structure of the sentence. This correlation plays an important role not only in referential and information-structural properties of arguments and the verb but also in adverbial properties. For instance, the study shows that certain sentence adverbials can occur in the sentence-final position in the vP phase when they represent the extreme value with respect to the set of focus alternatives. The proposed correlation also becomes important in anaphoric relations with respect to adjuncts. Only an R-expression spelled out and interpreted in the CP phase of an adjunct clause can corefer with the coindexed pronoun. This study also discusses adverbial ordering and shows that the relative order of certain adverbials can be reversed if they occur in different phases. This monograph will appeal to syntacticians and linguists interested in the relationship between syntax and its interfaces.