Hi & Welcome, Flavio!  Recently you wrote in a message to Alexander Koryagin:   
      
   ak>  "I live in the Moscow region".   
      
   ak>  "Moscow" is propable is a determiner itself, so we probably   
   ak>  don't need "the" before "Moscow region"?   
      
   FB>  Good question, I think that you should use "I live at the   
   FB>  Moscow region", if you want to use the "the" so badly. ;)   
      
      
            Not in English.   
      
            We might say "I live at the junction of Oak Street and Third Avenue",   
   however, or "I'll meet you at the ABC Restaurant in Richmond."   
      
      
            I see two issues here:   
      
                1)  when do we say "at", and when do we say "in"?   
      
                2)  when do we include "the" or "a(n)"?   
      
   I intend to comment on these issues separately within the near future....  :-)   
      
      
      
      
   --- timEd/386 1.10.y2k+   
    * Origin: Wits' End, Vancouver CANADA (1:153/716)