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What happens if the plans change suddenly? The speaker is very sure: everyone is bound to be troubled.

Lesson notes · ≈ JLPT N3 · Intermediate 2

〜に決まっている~ni kimatte iru

strong certainty; bound to

Use 「〜に決まっている」 to state a strong conviction, without implying that the facts were checked.

How it works

What happens if the plans change suddenly? The speaker is very sure: everyone is bound to be troubled.
It expresses the speaker’s strong conviction; it does not mean the facts have already been checked.
The tone is like “That goes without saying, of course.” When contradicting someone, it can sound forceful.
In the example, the speaker is sure that people “will not be convinced.” The negative form before the pattern does not make that conviction uncertain.

いきなりikinari

予定よていyotei

をo

変えたら、かえたら、kaetara、

みんなminna

困るこまるkomaru

にni

決まっきまっkimat

てte

います。imasu。

If you suddenly change the schedule, everyone is bound to be troubled.

理由りゆうriyuuをo説明せつめいsetsumeiしなけれshinakereば、ba、みんなminna納得なっとくnattokuできないdekinaiにni決まっきまっkimatてteいます。imasu。

If you don't explain the reason, everyone is bound to be unconvinced.

A
メールめーるで補足ほそく説明せつめいをせずに省略しょうりゃくしたら、相手あいてはわ不安ふあんに思うにおもうに決まっきまっています。
A: If you omit details without providing a supplementary explanation in the email, the other person is bound to feel anxious. (E2603)
B
そうですね。誤解ごかいを避けるさけるためにも、具体的ぐたいてきに書くにかくことが大切ですたいせつですね。
B: That's true. It's important to write specifically to avoid misunderstandings, isn't it?
A
はい、これからはわ相手あいてを心配しんぱいさせないように、表現ひょうげんの仕方しかたを工夫くふうします。
A: Yes, I will try to improve my expression in the future so as not to make the other person worry.

Level 1 · Recognise
Which sentence is correct?
Level 1 · Recognise
Listen and choose the meaning
Level 2 · Build
Put the words in order
If you keep making one-sided demands without giving any reasons, you are bound to make the other person angry.
Level 3 · Use
What goes in the blank?
いきなり予定を変えたら、みんな困る____。
If you suddenly change the plan, everyone is bound to be troubled.