The Object Marker を(wo) is often written in romaji as o, much like *.
Generally known as the direct object marker. This is more essentially the thing that receives the action. Since there are various uses for を, it’s easiest to simplify を down to the purpose of action receiving marker.
When using を place it after the thing that is being acted on. Let’s look at some examples.
ぼくは スーちゃんに プレセントを あげました。
I gave Sue a present.
ジッミーが ねこを なげた！
Jimmy threw the cat!
ボブくんが ごはんを たべた。
Bob ate rice.
As you can see above the noun, the object, the thing is marked with を.
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Now, there is something called a transitive and intransitive verb that can make this confusing but we will be talking about this towards the end of the challenge. So if a native Japanese person is reading over you shoulder say 「をって、そういう意味だけじゃねーんだろう。」they would be right. There are other ways to use を, but we will touch on that other version later.