EN
The diachronic and synchronic analyses presented in this paper show the possible influences of German on the Kashubian tense system. The diversity of relation between Slavonic substrate and German adstrate, which are determined by the geographical location and historical conditions, are perfectly noticeable in the Kashubian tense system. The Slavonic tense substrate, which manifests itself in the preservation of Slavonic analytic perfect tense and its further analysis to the synthetic form jô béł, co-occur with the periphrastic constructions with the verbs miec and bëc with passive participles. Such structures may – at least partly – result from language contact with German. The confrontative analysis presented in this paper of the Kashubian periphrastic constructions of the verb miec with passive parti-ciples against respective Polish and German constructions are the evidence of the unique structure of Kashubian language system, which merges elements of various provenience.