N3 · Structured courses

Ni Kimatteiru: It's Obvious, Of Course

Learn に決まっている for strong assertion of obviousness. This lesson combines form, context, examples, common mistakes, and practice so you can use the pattern in real communication.

12 minNihongo Hub Editorial TeamPublished 2026-06-06Updated 2026-06-06

Learning objectives

  • Lesson goals: Learn に決まっている for strong assertion of obviousness.
  • Form and connection: [Noun/Plain form] に決きまっている
  • Nuance in real use: This intermediate pattern adds sophistication to your Japanese.

Form and connection

[Noun/Plain form] に決きまっている

Core Explanation

Learn に決まっている for strong assertion of obviousness.

Cultural Note

This intermediate pattern adds sophistication to your Japanese.

Practical examples

That's obviously a lie.
He's obviously going to win.
If you practice every day, you'll obviously get better.

Common pitfalls

Build the base form before adding the pattern

Complete the required conjugation first. Do not keep polite and plain endings at the same time.

Match politeness to the situation

The examples are reliable starting points; relationships and context can still change the most natural wording.

Practice and answers

1. Write the connection formula for this lesson.
Show answer[Noun/Plain form] に決きまっている
2. Explain the meaning of the first example.
Show answerThat's obviously a lie.
3. Rewrite the final example using this lesson pattern.
Show answer毎日まいにち練習れんしゅうすれば上手じょうずになるに決きまっている。 ([Noun/Plain form] に決きまっている)

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