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JapanLingo
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Reading support

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N3NeutralAbout 5 minUnit 4 · Lesson 40 of 109

〜に違いない

must be ~

Express a duty, rule, or action that cannot be skipped.

Remember it

No skipping it: attach 〜に違いない to the required action.

1

Understand

Build the pattern

Sentence formula

Plainに違いない

How it works

「〜に違いない」 means "must be ~". Structure: Plain + に違いない. This is a JLPT N3 pattern — the examples below slot different everyday and workplace words into the same structure so you can see how it behaves. Learn the structure, then swap in your own words.

When to use it

Use it for deadlines, rules, paperwork, and responsibilities.

Tone: Neutral

A general pattern; let the sentence ending and situation set the politeness level.

2

Use

Hear it in real life

  1. Everyday life

    Example 1

    kore wa seikou no eikyou ni chigai arimasen.

    This must be the influence of the success.

  2. Everyday life

    Example 2

    kore wa anshin no eikyou ni chigai arimasen.

    This must be the influence of the relief.

  3. Everyday life

    Example 3

    kore wa gen'in no eikyou ni chigai arimasen.

    This must be the influence of the cause.

  4. Everyday life

    Example 4

    kore wa nouryoku no eikyou ni chigai arimasen.

    This must be the influence of the ability.

  5. Everyday life

    Example 5

    kore wa taido no eikyou ni chigai arimasen.

    This must be the influence of the attitude.

Make it yours

Choose one example. Replace one person, place, object, or time with a detail from your life, then say the new sentence aloud.

3

Recall

Test your memory

Recall practice

Can you say it?

1 of 5

Read the situation, look away from the answer, and say the Japanese aloud.

Your situation

This must be the influence of the success.

The answer is hidden. Try to use .

Remember tomorrow

Save this pattern as a flashcard

Review the meaning and formula later so today’s lesson moves into long-term memory.