Passivization and Typology

Is the passive a unified universal phenomenon? The claim derived from this volume is that the passive, if not universal, has become unified according to function. Language as a means of communication needs the passive, or passive-like constructions, and sooner or later develops them based on other voices (impersonal active, middle, reflexive), specific semantic meanings such as adversativity, or tense-aspect categories (stative,perfect, preterit). Certain contributors review the passives in vari