Аннотация:If we can assume material for the study of the stems of present in Avestan and Old Persian satisfactory, then the forms of the aorist and perfect are poorly represented and do not provide a sufficient basis for definitive conclusions on the morphology in these languages.
The comparative-historical linguistics based on data from the Old Indian and Greek languages. System of present and aorist in Avestan and partly Old Persian in general corresponds to the verb system of the Old Indian. With the help of the rich material of the Old Indian language this allows for the reconstruction of the Old Iranian languages’ defective forms