[Lingtyp] lifespan of Perfect

[Sergey Lyosov]

Dear colleagues,
what do we know about the life-time of “unstable” verbal categories, such as Perfect or Resultative? My studies of the history of the verb in Semitic languages make me suggest that this lifespan  may amount to some 200-300 years or so. Are there studies of the problem based on a representative sample of languages?
 Best,

Sergey
 


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