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Grammar › N2 · 01 Conditions and hypotheticals

〜ないことには: unless; without first doing

N2 · 01 Conditions and hypotheticals

Says that something cannot happen until a necessary first step is done.

Verb negative (〜ない) + ことには, then a negative result: 食べてみないことにはわからない. Often followed by 〜ない, 〜ならない or 〜できない. Not used for positive results. A bit softer and more spoken than 〜ない限り.

Examples

I can't say anything until I actually see it.

Nothing will move forward unless we consult the teacher.

Study 〜ないことには in the course →