This network project investigates adverbial clauses and their dependency relations from synchronic, diachronic, and typological perspectives, aiming to deepen understanding of subordinate clauses. Meetings explore dependencies between adverbials and matrix clauses, the development, variation, and grammaticalization of adverbial constructions, and non‑canonical functions such as adnominal adverbial clauses and adverbial argument clauses. Emphasis is placed on crosslinguistic comparison, drawing data primarily from Celtic, Germanic, Romance, and Slavic languages, to map patterns, constraints, and theoretical implications for clause subordination and syntax research.