I am learning about English grammar, but as a programmer, I have natually gravitated towards learning about syntactic structure. I am learning from university lecture notes which I found through Google.
The production rule for a sentence is:
S → NP (Aux) VP
However, the author does not address sentences which are of the general form:
NP Aux Adjective (where the Aux is a copula, like is, are etc)
John is tall. He is gentle. They are unwell.
Edit: another unaccounted case would be sentences of the form:
NP Aux NP (where the Aux is a copula)
Donald is a programmer. John is an artist. He is a kung-fu master.
Can the production rule above
S → NP (Aux) VP account for such cases, or do I need another production rule?