Investigated the interface of form and function in the acquisition of negation in Cantonese-speaking children. Data--from the Hong Kong Cantonese Child Language Corpus--were longitudinal spontaneous samples of eight children aged 1.5 to 3.8 years. Main issues in the study were the sequence of emergence of negative markers and the acquisition of 11 semantic categories of negation in children' expressive language. (Author/VWL)