のに
(Noni)
Indicates a purpose, use, or requirement for a certain action or object.
Connection rules
- +Verb (Dictionary Form) + のに
- +Noun + に
Examples
1.
パスポートを申請するのにいろいろな書類が必要です。

Pasupouto wo shinsei suru no ni iroiro na shorui ga hitsuyou desu.
Various documents are required in order to apply for a passport.
「Explaining formal procedures」
2.
この辞書は漢字を調べるのにとても便利だ。

Kono jisho ha kanji wo shiraberu no ni totemo benri da.
This dictionary is very convenient for looking up kanji.
「Recommending a tool」
Practice
This knife is used for cutting bread.
このナイフは、パンを___使います。
Romaji also accepted