In the article, infi nitives in the function of the secondary predicate, in particular, in the syntactic constructions Accusativus cum infi nitivo, Nominativus cum infi nitivo and in subordinate clauses with the conjunctions ὥστε and πρίν in the text of the biography of Artaxerxes by Plutarch are considered. In accordance with the purpose of the study, the descriptive method (for inventory, classifi cation and grammatical interpretation of infi nitives) and comparative analysis (for identifi cation of grammatical transformations of the ancient Greek infi nitive in New Greek translation and for assessment of their compliance with the original forms) were used. Elements of quantitative analysis have also been involved (to determine the main transformational means of translating infi nitives). The analysis has shown that the infi nitive as an non-fi nite form of the verb is rendered as a fi nite one, the most typical variant of translating the infi nitive in the construction Accusativus cum infi nitivo, in subordinate temporal clauses with the conjunction πρίν, and in the majority of clauses of result with the conjunction ώστε being conditional mood with the particle να (60 %). Infi nitives in the construction Nominativus cum infi nitivо and partly in subordinate clauses with the conjunction ώστε are usually translated by indicatives (35 %); in some cases the infi nitive is reproduced by descriptive expressions (5 %). Grammatical transformations are combined with lexical ones. In the translation, the same verb (15 %) as in Old Greek can be used, or it can be replaced by a synonymous verb (85 %) of New Greek due to the limited use of the corresponding Old Greek words in New Greek or their disappearance. Therefore, the absence of infi nitives in New Greek is represented in translation by other means and techniques, which have an equivalent semantic load and can adequately reproduce the meaning of a sentence with an infi nitive construction, and thus to render Plutarch’s literary passion for multifaceted action and information capacity of the text. Key words: Accusativus cum infi nitivo, Nominativus cum infi nitivo, subordinate clauses with conjunctions ὥστε and πρίν, translation, conditional mood with particle να, indicative mood, descriptive expression.