Published online by Cambridge University Press: 28 November 2008
Langendoen and Bever (1973) contended that both expressions in (1) are ungrammatical in English, despite the acceptability of the first to native speakers of English.
(1) (a) a not unhappy person
(b) a not sad person
We came to this conclusion because we believed, first, that all grammars of natural languages should be subject to a constraint ‘M’ that no syntactic rule is able to make use of the morphological structure of lexemes (1973:402); and, second, that we had shown that no grammar that satisfies M can distinguish the grammaticality of(1a) from that of (1b). Our exact wording of M was as follows: ‘no syntactic transformational rule is permitted to make use of the internal morphological structure of lexical items’. Since the only syntactic rules of the standard theory, within which we were operating that are not transformations are base-categorial rules, which by definition make no use of the internal morphological structure of lexical items, the word ‘transformational’ in our formulation of M is unnecessary.