Assignment 21

Write out all the Phrase Structure rules.

Study the PSRs carefully.  Most of our phrases have heads, i.e. for
each phrase there is a unique lexical category that is required to be
present in the phrase, and the phrase is named for that element:
N is the head of NP, V is the head of VP, P is the head of PP, etc.
(WARNING: some heads are silent, but that is a property of the individual
lexical items; they are still there in the syntax.)

The present assignment is just to look at all of our Phrase Structure rules
and find the ones that do not conform to this pattern: rules that have
no head, and rules that have more than one required element, and thus no
clear head.

We will discuss this on Monday November 26.
There is nothing to write up or hand in for this assignment.