The construction of a verbal system which is fairly regular and at the same time based on existing languages is a most difficult task, because in no other domain of the grammar do languages retain a greater number of ancient irregularities and differ more fundamentally from one another. Still an attempt will be made here to conciliate the two points of view and to bring about something which resembles the simple Chinese grammar without, however, losing its European character or the power of expressing nuances to which we are accustomed in our own languages.