11. Kaska narratives tend to express a more serious tone through perfective verb forms. 12. The terminology around the stative, perfective and imperfective aspects can be confusing. 13. Usage of the perfective aspect follows the same pattern as the imperfective aspect. 14. The past transgressive is usually derived from perfective verbs. 15. The auxiliary verbs can be both perfective and imperfective. 16. The perfective forms from the verb stem, followed by "-?/s>The perfective aspect verbs also use the perfect passive participle in the passive voice. 17. With non-perfective verbs this marks the imperfect, habitual, or conditional. 18. The distinction between perfective and imperfective is more important in some languages than others. 19. It exists only for transitive verbs, and almost only if they are perfective . 20. Perfective verbs indicate the finality of the process.
