ments: It places them in parentheses. With these factors in mind, we can adjust the
earlier rules so that they describe both sentences, as shown here:
SÆNP VPNPÆ(det) NVPÆV (NP)detÆartNÆFred, suitVÆboughtartÆaThis sentence grammar is more complex than the previous one because
we are writing a grammar that is generalizable to sentences 1 and 2, with the
exception of the individual words assigned. Now consider another, more
complex, example:
- Maria wore an expensive evening gown.
This sentence is interesting because it adds adjectivals to our basic NP VP
combination, and one of them is a noun,evening.We therefore must adjust the
phrase-structure rules so that they will describe all three of our sentences,
which means adding a rule for the adjective phrase (AdjP) that describes both
types of adjectivals:
SÆNP VPNPÆ(det) (AdjP) NVPÆV (NP)detÆartAdjPÆadj
NPì
í
îü
ý
þNÆMaria, evening, gownVÆwore104 CHAPTER 4