Positive plurals

Positive plurals, it seems, are possible in Italian, Hebrew, Welsh, German, Estonian, Norwegian, Swedish, Kyldíl (??? @#$%^&*%$#@%) and maybe other languages, but I can't find any reference to them with regard to their use in English.
In which country is this 3rd grade teacher? From which country has this 3rd grade teacher come?
I'm sorry I can't tell you what a positive plural is, or whether they exist in English - but maybe if we are lucky enough someone else can, in English perhaps.