Produced by gfdoc - a rudimentary GF document generator. (c) Aarne Ranta (aarne@cs.chalmers.se) 2002 under GNU GPL.

Common: Structures with Common Implementations.

This module defines the abstract parameters of tense, polarity, and anteriority, which are used in [``Phrase`` Phrase.html] to generate different forms of sentences. Together they give 4 x 2 x 2 = 16 sentence forms. These tenses are defined for all languages in the library. More tenses can be defined in the language extensions, e.g. the passe simple of Romance languages in [``ExtraRomance`` ../romance/ExtraRomance.gf].

  abstract Tense = Common ** {
  
    fun
      TTAnt : Tense -> Ant -> Temp ;
  
      PPos, PNeg : Pol ;           -- I sleep/don't sleep
  
      TPres  : Tense ;                
      ASimul : Ant ;
      TPast, TFut, TCond : Tense ; -- I slept/will sleep/would sleep --# notpresent
      AAnter : Ant ;               -- I have slept                   --# notpresent
  }