The paper reviews the syntactic-semantic structures including the realization of the relative temporal determination of the sentence predication by a nominal form - nondeverbal and deverbal - in the instrumental case in the standard Serbian language. The authoress presents the semantic types (temporal identification, temporal quantification, temporal frequency) and corresponding syntactic models, discussing, in relevant cases their special pragmatic characteristics. Also she especially pays detailed atention to the correspodence between instrumental form and sententional form within two specific microfields. In the system of the temporal meaning in the standard Serbian language, these two meanings are determined only by sententional form and among nominal forms the instrumental case is the only exception. .