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updated synopsis with information on extra modules and gfdoc for internal abstract syntax

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<html>
<body>
<i> Produced by
gfdoc - a rudimentary GF document generator.
(c) Aarne Ranta (aarne@cs.chalmers.se) 2002 under GNU GPL.
</i>
<p>
<h1> Sentence: Sentences, Clauses, and Imperatives</h1>
<pre>
abstract Sentence = Cat ** {
</pre>
<h2> Clauses</h2>
The <tt>NP VP</tt> predication rule form a clause whose linearization
gives a table of all tense variants, positive and negative.
Clauses are converted to <tt>S</tt> (with fixed tense) with the
<tt>UseCl</tt> function below.
<pre>
data
PredVP : NP -> VP -> Cl ; -- John walks
</pre>
Using an embedded sentence as a subject is treated separately.
This can be overgenerating. E.g. <i>whether you go</i> as subject
is only meaningful for some verb phrases.
<pre>
PredSCVP : SC -> VP -> Cl ; -- that she goes is good
</pre>
<h2> Clauses missing object noun phrases</h2>
This category is a variant of the 'slash category' <tt>S/NP</tt> of
GPSG and categorial grammars, which in turn replaces
movement transformations in the formation of questions
and relative clauses. Except <tt>SlashV2</tt>, the construction
rules can be seen as special cases of function composition, in
the style of CCG.
<b>Note</b> the set is not complete and lacks e.g. verbs with more than 2 places.
<pre>
SlashVP : NP -> VPSlash -> ClSlash ; -- (whom) he sees
AdvSlash : ClSlash -> Adv -> ClSlash ; -- (whom) he sees today
SlashPrep : Cl -> Prep -> ClSlash ; -- (with whom) he walks
SlashVS : NP -> VS -> SSlash -> ClSlash ; -- (whom) she says that he loves
</pre>
<h2> Imperatives</h2>
An imperative is straightforwardly formed from a verb phrase.
It has variation over positive and negative, singular and plural.
To fix these parameters, see [Phrase Phrase.html].
<pre>
ImpVP : VP -> Imp ; -- love yourselves
</pre>
<h2> Embedded sentences</h2>
Sentences, questions, and infinitival phrases can be used as
subjects and (adverbial) complements.
<pre>
EmbedS : S -> SC ; -- that she goes
EmbedQS : QS -> SC ; -- who goes
EmbedVP : VP -> SC ; -- to go
</pre>
<h2> Sentences</h2>
These are the 2 x 4 x 4 = 16 forms generated by different
combinations of tense, polarity, and
anteriority, which are defined in [``Common`` Common.html].
<pre>
fun
UseCl : Temp -> Pol -> Cl -> S ;
UseQCl : Temp -> Pol -> QCl -> QS ;
UseRCl : Temp -> Pol -> RCl -> RS ;
UseSlash : Temp -> Pol -> ClSlash -> SSlash ;
</pre>
An adverb can be added to the beginning of a sentence, either with comma (<i>externally</i>)
or without:
<pre>
AdvS : Adv -> S -> S ; -- then I will go home
ExtAdvS : Adv -> S -> S ; -- next week, I will go home
</pre>
This covers subjunctive clauses, but they can also be added to the end.
<pre>
SSubjS : S -> Subj -> S -> S ; -- I go home if she comes
</pre>
A sentence can be modified by a relative clause referring to its contents.
<pre>
RelS : S -> RS -> S ; -- she sleeps, which is good
</pre>
-- A sentence can also be post-modified by a subjunct sentence.
-- ModSubjS : S -> Subj -> S -> S ; -- she sleeps, because she is old
-- cf. Adverb.SubjS
<pre>
}
</pre>
</body>
</html>