THE VARIOUS TYPES OF PRENOMINAL MODIFIERS IN ENGLISH ARE STUDIED WITHIN THE GENERAL FRAMEWORK OF A TRANSFORMATIONAL GRAMMAR. TWO DISTINCT, BUT INTERRELATED PROBLEMS ARE INVOLVED--THE DERIVATION OF EACH OF THE TYPES OF SINGLE MODIFIERS, EITHER TRANSFORMATIONALLY OR FROM CONSTITUENT STRUCTURE RULES, AND THE GRAMMATICAL IMPLICATIONS OF COMBINING THEM IN THE PRENOMINAL POSITION. EACH OF THE TWO PROBLEMS ARE DISCUSSED, FOLLOWED BY A GRAMMAR FRAGMENT CONSISTING OF CONSTITUENT STRUCTURE RULES, AND TRANSFORMATION RULES DESIGNED TO HANDLE SOME OF THE OBSERVED FEATURES OF GRAMMATICAL BEHAVIOR. IN PLACE OF A SAMPLE LEXICON, LEXICAL RULES ARE GIVEN WITH REFERENCE LISTS TO INDICATE JUST WHAT MORPHEMES ARE BEING REFERRED TO IN EACH RULE. (IT)