kirei ni

Usages of kirei ni

黒板こくばん が よごれたら、 しゴム で せば きれい に なる。kokuban ga yogoretara, kesigomu de keseba kirei ni naru.
If the blackboard gets dirty, erasing it with an eraser makes it clean.
汚染おせん を らせば、 地球ちきゅう の 空気くうき が きれい に なります。osen wo heraseba, tikyuu no kuuki ga kirei ni narimasu.
If we reduce pollution, the Earth's air becomes clean.
部屋へや を きれい に たもつの は 大変たいへん です。heya wo kirei ni tamotuno ha taihen desu.
It is hard to keep the room clean.
あたらしい 空気清浄機くうきせいじょうき を ったら 部屋へや の 空気くうき が きれい に なりました。atarasii kuukiseizyouki wo kattara heya no kuuki ga kirei ni narimasita.
After buying a new air purifier, the air in the room became clean.

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How do verb conjugations work in Japanese?
Japanese verbs conjugate based on tense, politeness, and mood. For example, the polite present form adds ‑ます to the verb stem, while the past tense uses ‑ました. Unlike English, Japanese verbs don't change based on the subject — the same form works for "I", "you", and "they".

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