Subcategorization and parallelism

This paper (a condensed and refined version of an earlier article) shows that phrases with distinct subcategorizational properties can be coordinated — and more generally placed in positions of “parallelism” — only if (i) they function as arguments/modifiers of compatible verbal entries and (ii)include focused operators of a common type. A grammatical analysis that makes it possible to generate coordinate structures with heterofunctional conjuncts is outlined in an appendix.