I was searching for accusative of "equus" and found a site
with very short stories in Latin, which can be immediately
translated when you desire.
http://216.239.53.104/search?q=cache:AYGszwERPC0J:www.learnlatinlanguage.com/DEMFABULAE.HTM+Latin+accusative+equus&hl=en&ie=UTF-8

clickable version: http://www.learnlatinlanguage.com/DEMFABULAE.HTM

Bingley

Thanks, Bingley.

(Speaking of the accusative case, I've been wondering how to say "beat a dead horse" auf Lateinische )

how to say "[to] beat a dead horse" auf Lateinische

Well, it's always dangerous doing this, and I'm sure there's a comparable Roman saying for ours that may not even involve dead horses, but here's one way:

equum defunctum verberare