Slovak verbs express three absolute tenses - past, present and future. Relativity can be expressed by the aspect, sentence constructions and participles.
Like in other Slavic languages, Slovak verbs are distinguished by aspect, they are either perfective or imperfective. Perfective verbs indicate the finality of the process. Therefore, they cannot express the present tense.
The present tense can be expressed in imperfective verbs only.
- James Naughton. Colloquial Slovak. Routledge. 2 edition. New York. 1999.