since2 [sins] veznik
odkar, kar; ker, ker že
how long is it since you saw him kako dolgo je, (od)kar ste ga videli?
it has been raining ever since I came (že ves čas) dežuje, odkar sem prišel
since you don't believe me ker mi (že) ne verjamete
since that is so ker je (že) to takó
a costly, since rare book dragocena, ker redka knjiga
a more dangerous, since unknown foe toliko nevarnejši, ker nepoznan sovražnik