A perfective verb indicates an action that has been or will be completed and therefore emphasizes the result of the action rather than its course .
Like all Slavic languages , Interslavic verbs have grammatical aspect .
A perfective verb indicates an action that has been or will be completed and therefore emphasizes the result of the action rather than Slavic 's course .
Like all Slavic languages , Interslavic verbs have grammatical aspect .