The distribution of a phrase X is the set of possible external structures for X. a. The distribution of a phrase is determined in part by its category. Internal structure is the makeup of a phrase, regardless of what stands outside that phrase. The puppy keeps putting my slippers behind the couch , click here . Features A. Types of features.
Verbs forms can be finite or nonfinite.
Finite forms can be lexical or auxiliary. Auxiliary forms can be aspectual or modal. By definition, aspectual auxiliaries take participle verb forms. By definition, modal auxiliaries take bare verb stems. The distinction is a contextual one.