Japatan
Formação
- V普通形 + に決まっている
- いA + に決まっている
- なA + に決まっている
- N + に決まっている
Explicação
This shows that the speaker strongly believes something is certainly true, even without clear evidence. It is mainly used in speech, and in casual talk it becomes に決まってる. な-adjectives and nouns attach directly without だ, as in 無理に決まっている.
Exemplos
こんなに練習したんだから、合格する に決まっている。
After practicing this much, you're sure to pass.
一人で全部やるなんて、無理 に決まっているよ。
Doing it all by yourself? That's definitely impossible.
日曜日の遊園地は混んでいる に決まっています。
An amusement park on a Sunday is bound to be crowded.
作りたてのパンのほうが おいしいに決まっている。
Freshly baked bread is obviously tastier.
Observações
Do not insert だ, as in 無理だに決まっている. Because it is very strong, きっと〜と思います sounds more polite when giving your opinion to a superior.
Miniquiz
1あんなに高いレストランなら、料理もおいしい（ ）。
Resposta e explicação
Resposta: 2 に決まっている
The speaker is sure the food is good, so に決まっている fits: "At such an expensive restaurant, the food is sure to be delicious." おそれがある is used only for bad possibilities.
2A「この仕事、明日までに終わるかな。」
B「一日では無理（ ）よ。」
Resposta e explicação
Resposta: 4 に決まっている
B is sure it cannot be done in one day: "It's definitely impossible in one day." Note that 無理 attaches directly to に決まっている without だ.
3そんなことを言ったら、先生は（ ）に決まっている。
Resposta e explicação
Resposta: 1 怒る
Verbs take the plain form: 怒るに決まっている. The sentence means "If you say something like that, the teacher is sure to get angry."
