ともだちにあう? ともだちをあう? に(ni) vs を(o):The difference between に and を [Japanese Particles for Objects]


When do you use に (ni) as an object particle instead of を (o)?


We sometimes use に (ni) as an object particle instead of を (o). The reason is....just because it has been used as a idiomatic expression! So sorry for learners...But we don't have much, you can memorise them. I listed all you need here.