1. Introduction

The interrogative pronouns of Hebrew are מה ma ‘what’, מי mi ‘who’, איזה ʾeze ‘which (ms)’, איזו ʾezo ‘which (fs)’ and אילו ʾelu ‘which (cpl)’. Interrogative adverbs (or ‘pro-adverbs’, as Glinert 1989 calls them) belong to two distinct groups: (a) adverbs of place, e.g., איפה ʾefo ‘where’, of time, e.g., מתי matay ‘when’, of cause, e.g., מדוע maduaʿ ‘why’ and למה lama ‘why’, of purpos…