The source construction and the pathway for the formation of English epistemic adverbials are widely discussed in the literature. However, few studies to our knowledge have specifically discussed a hypothetical source construction of separate clauses and a hypothetical initial-to-medial pathway. Chinese guoran was first used as a separate clause, and later developed into an epistemic adverbial meaning ‘it really happens’. Diachronic investigations reveal that it followed a hypothetical initial-to-medial pathway leading from a clause-initial p...
