This study examines the acquisition of the inflectional system by a Turkish child learner of
English. Results from longitudinal data collected over 18 months are reported, presenting
counterevidence for recent hypotheses on early L2 acquisition according to which missing
functional items reflect missing functional categories (e.g., Vainikka & Young-Scholten,
1994, 1996a, 1996b). Despite robust evidence for the early production of copula be,
auxiliary be, and overt subjects, the child L2 data analyzed in this paper do not show
any evidence for tense and agreement morphology in the early stages of L2 development. In other
words, although some functional elements related to IP are missing, the learner is able to perform
other morphological and syntactic operations involving the functional projection IP. These
findings lead us to question whether the lack of functional elements entails the lack of functional
categories.