Japanese grammar: Using を (o) vs. に (ni) with 教える (oshieru) 
For a quick review, as you may know the Japanese particle に (ni) is generally used for the direction of an action, the location of existence (with verbs like aru/iru), and also for the doer of a passive action. On the other hand, the particle を (o) is used for the direct object of a… Read More »