JLPT N4 · Change and state

くなる / になる

Become, change into

Meaning

Used to show a change of state. くなる is used with い-adjectives, and になる is used with nouns and な-adjectives.

Formation

  1. i-adjective: い → く + なる: 寒くなる
  2. na-adjective and noun: + に + なる: 上手になる

When to use it

Core use
Become, change into

Examples

20 sentences
  • 日本語にほんごが上手じょうずになりました

    My Japanese became better.

  • 部屋へやが静かしずかになりました

    The room became quiet.

  • 薬くすりを飲んでのんで元気げんきになりました

    I became well after taking the medicine.

  • もう夜よるになりました

    It has become evening already.

  • 新しいあたらしいパソコンに替えかえて仕事しごとが楽らくになりました

    After switching to a new computer, my work became easier.

  • 子どもこどもが大きおおきくなりました

    The child became big.

  • この町まちはにぎやかになりました

    This town became lively.

12 more examples
  • 生活せいかつが楽らくになりました

    Life became easier.

  • この道みちは広ひろくなりました

    This road became wider.

  • 雨あめがやんやんで空そらが明るくあかるくなりました

    The rain stopped and the sky became brighter.

  • 練習れんしゅうして日本語にほんごが上手じょうずになりました

    With practice my Japanese improved.

  • 夜よるになると道みちが静かしずかになります

    The street becomes quiet at night.

  • 春はるになって花はなが多くおおくなりました

    Spring came and there were more flowers.

  • 妹いもうとは来年らいねん中学生ちゅうがくせいになります

    My younger sister will become a junior high school student next year.

  • 新しいあたらしい橋はしで町まちが便利べんりになりました

    The new bridge made life in the town more convenient.

  • この服ふくは小さくちいさくなりました

    These clothes have become too small.

  • 少しすこし休んやすんで元気げんきになりました

    I rested a little and felt better.

  • 風かぜが強くつよくなってきました

    The wind has started getting stronger.

  • 掃除そうじしたら台所だいどころがきれいになりました

    The kitchen became clean after I tidied it.

Important notes

  • なる presents a change in state; する presents someone's intervention.

Common mistakes

  • い-adjectives take く and な-adjectives take に: 高くなる, 静かになる.

Check yourself

Pick the translation of each sentence. The wrong options translate similar patterns, so watch the grammar rather than the words.

  1. Sentence 1: 生活せいかつが楽らくになりました

  2. Sentence 2: 妹いもうとは来年らいねん中学生ちゅうがくせいになります

  3. Sentence 3: 掃除そうじしたら台所だいどころがきれいになりました

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