I know that in German "dies" is used not so often as "this" in English. But say, in a situation like, you're introducing your friend to another friend, and you gesture your hand toward that friend, ...
Possible Duplicate: Beugt man jemand oder niemand mit Endung? The declension of indefinitve pronouns "jemand" or "niemand" seems not to follow strict rules. I can read all of the following: ...