N2 · Structured courses

~ka to Omottara: Just When I Thought

Learn ka to omottara for "just when I thought A, (unexpectedly) B." 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 ka to omottara for "just when I thought A, (unexpectedly) B."
  • Form and connection: [Plain form] かと思おもったら
  • Nuance in real use: かと思ったら captures those confusing rapid shifts in life — before you've even processed it, things have already changed. Especially common when describing children, weather, or mood swings.

Form and connection

[Plain form] かと思おもったら

Core Explanation

Learn ka to omottara for "just when I thought A, (unexpectedly) B."

Cultural Note

かと思ったら captures those confusing rapid shifts in life — before you've even processed it, things have already changed. Especially common when describing children, weather, or mood swings.

Practical examples

Just when I thought the baby was crying, she's already laughing.
Just when I thought it started raining, it stopped.

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[Plain form] かと思おもったら
2. Explain the meaning of the first example.
Show answerJust when I thought the baby was crying, she's already laughing.
3. Rewrite the final example using this lesson pattern.
Show answer雨あめが降ふり出だしたかと思おもったら、もう止やんだ。 ([Plain form] かと思おもったら)

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