Kotomora
JLPT N2Construction
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したことはないNothing is better than; ideally

したことはない presents an action or condition as the safest, best, or most desirable ideal. It expresses preference rather than strict necessity, so a less ideal alternative may still be workable.

The ideal, not an absolute requirement

The expression evaluates one possibility against the alternatives and says that nothing would be better. However, it does not mean that the ideal is essential. This makes it useful when you want to recommend the safest or most desirable option while remaining realistic.

じょうようみずおおいにしたことはないが、かんしょにもかぎりがある。

It is best to have plenty of emergency water, but storage space is limited too.

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Having more water is presented as ideal, while the second clause allows for a practical compromise.

When the preferred state is negative

A negative form before したことはない means that avoiding the action or condition would be ideal. The whole sentence remains a positive evaluation of that absence.

めんせつではきんちょうしないにしたことはないが、すこしくらいならぜんなことだ。

Ideally, you would not be nervous in an interview, but a little nervousness is natural.

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Nouns and na-adjectives

With a noun or na-adjective, use である before the target expression as a reliable careful form. Because this combination is somewhat formal, it fits evaluations in discussion and writing better than relaxed conversation.

そなえはじゅうぶんであるにしたことはないが、さんとのバランスもたいせつだ。

It is best to be fully prepared, but balancing that with the budget is also important.

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こうしょうせきにんしゃけいけんしゃであるにしたことはないが、じゅうぶんじゅんがあればわかでもつとまる。

Ideally, the person responsible for the negotiations would be experienced, but a well-prepared junior employee can handle the role too.

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Choosing among similar recommendations

したことはない identifies an ideal while leaving room for compromise. かぎ selects the best choice more directly and can sound more personal or categorical. たほうがいい is the ordinary, more direct way to advise someone to take a particular action.

More examples

りょこうもつかるいにしたことはない

When traveling, it is best to keep your luggage light.

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にんみせなら、はやめにやくしておくにしたことはない

If it is a popular restaurant, it is best to reserve early.

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ホテルはえきちかいにしたことはないが、りょうきんできない。

Ideally, a hotel would be close to the station, but the price cannot be ignored.

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けいやくしょしょめいまえせんもんてもらうにしたことはない

It is best to have a specialist review a contract before signing it.

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せつめいかんけつであるにしたことはないが、ひつようじょうほうまではぶいてはいけない。

It is best for an explanation to be concise, but essential information should not be omitted.

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トラブルはきないにしたことはないが、きたあいたいおうめておこう。

It would be best if no trouble occurred, but let us also decide how to respond if it does.

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に越したことはない – Nothing is better than; ideally