starting to add tense to English resource

resource/english/CategoriesEng.gf

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+--# -path=.:../abstract:../../prelude
+
+--1 The Top-Level English Resource Grammar: Combination Rules
+--
+-- Aarne Ranta 2002 -- 2003
+--
+-- This is the English concrete syntax of the multilingual resource
+-- grammar. Most of the work is done in the file $syntax.Eng.gf$.
+-- However, for the purpose of documentation, we make here explicit the
+-- linearization types of each category, so that their structures and
+-- dependencies can be seen.
+-- Another substantial part are the linearization rules of some
+-- structural words.
+--
+-- The users of the resource grammar should not look at this file for the
+-- linearization rules, which are in fact hidden in the document version.
+-- They should use $resource.Abs.gf$ to access the syntactic rules.
+-- This file can be consulted in those, hopefully rare, occasions in which
+-- one has to know how the syntactic categories are
+-- implemented. The parameter types are defined in $TypesEng.gf$.
+
+concrete CategoriesEng of Categories = open Prelude, SyntaxEng in {
+
+flags 
+  startcat=Phr ; 
+  lexer=text ;
+  unlexer=text ;
+
+lincat 
+  N      = CommNoun ;         
+      -- = {s : Number => Case => Str}
+  CN     = CommNounPhrase ;   
+      -- = CommNoun ** {g : Gender}
+  NP     = {s : NPForm => Str ; n : Number ; p : Person} ;
+  PN     = {s : Case => Str} ;
+  Det    = {s : Str ; n : Number} ;
+  N2     = Function ;
+      -- = CommNounPhrase ** {s2 : Preposition} ;
+  N3     = Function ** {s3 : Preposition} ;
+  Num    = {s : Case => Str} ;
+  Prep   = {s : Str} ;
+
+  A      = Adjective ; 
+      -- = {s : AForm => Str}
+  A2     = Adjective ** {s2 : Preposition} ;
+  ADeg   = {s : Degree => AForm => Str} ;
+  AP     = Adjective ** {p : Bool} ;
+
+  V      = Verb ; 
+      -- = {s : VForm => Str ; s1 : Particle}
+  VG     = {s : Bool => SForm => Str ; s2 : Bool => Number => Str ; 
+            isAuxT, isAuxF : Bool} ;
+  VP     = {s : SForm => Str ; s2 : Number => Str ; isAux : Bool} ;
+  TV     = TransVerb ; 
+      -- = Verb ** {s3 : Preposition} ;
+  V3     = TransVerb ** {s4 : Preposition} ;
+  VS     = Verb ;
+  VV     = Verb ** {isAux : Bool} ;
+
+  AdV    = {s : Str ; p : Bool} ;
+
+  S      = {s : Str} ; 
+  Cl     = Clause ;
+      -- = {s : Bool => SForm => Str} ;
+  Slash  = {s : Bool => Str ; s2 : Preposition} ;
+  RP     = {s : Gender => Number => NPForm => Str} ;
+  RC     = {s : Gender => Number => Str} ;
+
+  IP     = {s : NPForm => Str ; n : Number} ;
+  Qu     = {s : QuestForm => Str} ;
+  Imp    = {s : Number => Str} ;
+  Phr    = {s : Str} ;
+  Text   = {s : Str} ;
+
+  Conj   = {s : Str ; n : Number} ;
+  ConjD  = {s1 : Str ; s2 : Str ; n : Number} ;
+
+  ListS  = {s1 : Str ; s2 : Str} ;
+  ListAP = {s1,s2 : AForm => Str ; p : Bool} ;
+  ListNP = {s1,s2 : NPForm => Str ; n : Number ; p : Person} ;
+
+} ;