The word давнћ, when used with the Imperfective non-past or with no verb ('am, is, are') means 'for a long time now'. This construction corresponds to the English present perfect ('have been'), indicating an action lasting up to the present, e.g.
ВІ давнћ живёте в Кќеве? Have you been living in Kiev for a long time?
The adverb ужљ, which is normally translated as 'already', is frequently used in this construction, e.g.
ВІ ужљ давнћ здљсь? Have you been here long?