Book excerpt: The studies in this book cover a range of topics in child language development, including: acquistion of semantic-syntactic relations, negation, verb inflections, questions, syntactic connectives, complementation, causality, imitation, and discourse contigency. Of special interest is the development of verb subcategorization, and the importance of action, locative, epistemic, and perception verbs in particular. Language Development from Two to Three will be of interest to a range of readers in psychology, linguistics, early childhood education, speech and language pathology, and second language learing.