This volume represents the first comprehensive work on Japanese clause structure conducted within the framework of Cognitive Grammar. The author proposes schematic conceptual structures for the major constructions in the language and defines Japanese case marking and grammatical relations in purely conceptual terms. The work thus makes a convincing case for the conceptual basis of grammar, thereby constituting a strong argument against the autonomy of syntax hypothesis of Generative Grammar. The volume should be of interest to any researcher wishing to know how Cognitive Grammar, whose primary focus has been on the non-syntactic aspects of language, can explain the clausal structure of a given language in a detailed, comprehensive, yet unifying manner. In addition to its theoretical findings, the volume contains a number of revealing analyses and interpretations of Japanese data, which should be of great interest to all Japanese linguists, irrespective of their theoretical persuasions.