Old Church Slavonic, the language of the religious texts translated by Saints Cyril and Methodius for the use of the Slavonic-speaking people of Central Europe in the early Middle Ages, later to become the literary language of medieval Russia and other East European countries, is a basic component of Modern Standard Russian. This is an elementary grammar of the language for readers of English. No previous knowledge of a Slavonic language or of philology or linguistics is assumed, and the essential points are explained with the minimum of technical terms. After a brief historical introduction,...