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<< koto ga aru | koto ni naru >>

ことはない ([ことはない] )(koto ha nai)
    Meaning: no need to 〜しなくても いい
    Example: There's no need to be insulting, you know!
    JLPT Level: 2
    Category: grammar
    Author: dc

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動−辞書刑 + ことはない 

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ex #422   ただの風邪ですから、心配することはありません 
Its just a common cold, so there's no need to worry.  
ex #4660   この世に思いわずらうことはない。 
I don't have a care in the world.  
ex #5820   時間は十分あるから急ぐことはない 
There is no need to hurry as we have plenty of time.  
ex #6120   ちょっと待たされただけで、なにもそんなに怒ることはないでしょう。 
You only had to wait a little bit, so there's no need to get so upset.  
ex #6623   君があやまることはないよ。 
There is no need for you to apologize.  

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  See Also:  
    [ Add a See Also ]
    KaensI'd rather define this as (verb/inf.)ことはない, the meaning being the simple verb->gerund conversion + negation and thus referring to koto 
    Miki#5820 文字化け? I guess 時間は十分あるから急ぐことはない。 十分 here can be read as じゅうぶんenough or じゅっぷん 10 minutes. 
    CleberIs it [必要とする] the opposite expression to [ことはない ]?? 
    karamu sanI have also seen the expression: (verb/inf.)必要はない used to mean the same thing. Is there a difference nuance between these, or one preferred over another? 
    tigertIs this right? Shouldn`t it be 〜ことではない
    〜ことはない means that thing isn`t or doesn`t exist but ではない means its not that kind of thing.

    I don`t think I have heard a native speaker use ことはない

    jyubun can also mean enough or sufficent. so #5820 could be translated as

    because there is sufficent time, there is no need to hurry.

    corbettgregI hear this grammar pattern used by native speakers all the time. I'd say it's the number one way to say there's no need/it's not necessary. 
    herinapotter「必要はない」and「ことはない」have the same meaning. 

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