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Decoded Slug: ～ことはない (〜koto wa nai)
Japanese JLPT Grammar Point
～ことはない (〜koto wa nai)
～ことはない (〜koto wa nai)
Short explanation:
Expresses that something doesn't need to be done or there's no occasion to do it; 'don't have to', 'not necessary'.
Formation:
Verb-dictionary form + ことはない, い-Adjective + ことはない, な-Adjective + であることはない, Noun + であることはない
Examples:
毎日お金を使わなくても、貯金することはない。
Mainichi okane wo tsukawanakutemo, chokin suru koto wa nai.
You don't have to save money every day, even if you don't spend it.
この本は簡単だから、辞書を使うことはない。
Kono hon wa kantan dakara, jisho wo tsukau koto wa nai.
Since this book is easy, there's no need to use a dictionary.
彼女は海外旅行に行きたくなければ、行くことはない。
Kanojo wa kaigai ryokou ni ikitakunakereba, iku koto wa nai.
If she doesn't want to go on an overseas trip, she doesn't have to go.
寒くなければ、コートを着ることはない。
Samukunakereba, kooto wo kiru koto wa nai.
If it's not cold, there's no need to wear a coat.
Long explanation:
The ～ことはない grammar point is used to express that doing something is not necessary, or there's no occasion to do it. It implies that although a certain action might not be needed, it does not mean it is forbidden. The formation differs depending on whether it is used with a verb, い-adjective, な-adjective, or noun.