Breakdown of kami o hanbun ni oru mae ni, haha wa jougi o tsukaimashita.
Questions & Answers about kami o hanbun ni oru mae ni, haha wa jougi o tsukaimashita.
Because 紙 is the direct object of 折る (to fold).
In 紙を半分に折る, the thing being folded is paper, so it takes を.
- 紙を折る = to fold paper
- 本を読む = to read a book
- パンを食べる = to eat bread
Even though 紙を半分に折る comes before 前に, it is still a complete verb phrase, and 紙 is still the object of 折る.
Here, に marks the resulting state or form.
So 半分に折る means to fold it into half or to fold it in half.
This に is not a location marker here. It shows what the paper becomes as a result of the action.
Compare:
- 紙を半分に折る = fold the paper in half
- 氷が水になる = ice becomes water
- 部屋をきれいにする = make the room clean
So in this sentence, 半分に tells you the shape/state the paper ends up in.
