This report examines the question of whether grammatical rules are globally learned and applied. It also attempts to determine the underlying word order in English as well as the developmental sequence of the acquisition of Aux. A sentence-repetition test using positive statements, positive questions, and negative questions was administered to 30 children, aged 2 years, 1 month, to 5 years, 1 month, in order to examine these three questions. Results showed grammatical variation and seemed to indicate that rules are not globally learned and applied. The question of whether statements or questions are the underlying forms of English is unresolved. Rather than a single developmental sequence, varied strategies seem to account for child development of the acquisition of Aux. A revised transformational theory, asserting that sentences which have undergone a greater number of transformations are more difficult, is shown to be incorrect. (AM)