Gerry said

> Actually in all the languages I'm familiar with, there is some type
> of exclamation for "good morning". Is there a human language that
> doesn't express this type of greeting?

Yes there are. I am aware that there are no "good morning" style
greatings in the Nyungar language of the South West of Western
Australia (a language I have been learning over the last 6 months).
I also know that such greetings are absent in a number of the Central
Highlands family of the Trans-Papuan Phylum.

The nature of greetings seems to be very much determined by the
evolution of social classes. Upper classes, based upon "refined
language styles" evolve a whole series of "politeness expressions",
that are not present I believe in the languages of hunter gatherer
societies where social class destinction is either absent or poorly
developed.

> The accusative case and infinitive part of speech doesn't occur in
> all languages. Swahili for example doesn't have that many case
> changes. And the grammatical form for Spanish differs immensely
> from that of Latin (or Russian).

Gerry asked

> Quick question: can a CV(C) also be represented as (C)V(C)? Any
> rule for use of parentheses?

Gerry, I believe that a (C)V(C) language would be one like English
where er have a number of syllables comprising an isolated vowel.
For example *I (1st person pronoun) or *a (indefinite article) for
instance. A CV(C) language would have no syllables starting with a
vowel but with the option of either ending a syllable with either a
voewl or a consonant.

Hope this helps

Regards

John