New Approaches
Phrase structure is generally associated with X-bar syntax. In recent
work on X-bar syntax, two different types of phrase have been distinguished:
 |
 |
| a simple XP | a complex XP |
As a consequence, noun phrases have been reanalyzed as simple or complex determiner phrases.
Further changes concern the introduction of a general functional category and an extended daughter structure of I' to account for the morphological features of tense, aspect etc.