N3#grammar#causality#n3#particles

Giving Reasons Lesson 7

Master the nuances of expressing causality in Japanese, moving beyond basic 'kara' to more sophisticated structures like 'node', 'shi', 'tame', and 'sei'.

Context

Why did that happen?

In daily life, we constantly explain the 'why' behind our actions or situations. Sometimes we are making a polite request, other times we are complaining about a negative outcome, or perhaps we are listing multiple reasons for a decision.

Imagine you are at work. You might need to explain why a report is late (a negative consequence), why you chose a specific project (listing multiple factors), or why you are leaving early (a polite justification). Using the right 'reason' grammar helps you convey the correct level of formality and emotional weight.
Explanation

The Grammar of Reasons

We use different structures depending on whether the reason is objective, subjective, positive, or negative.

Reasonのでからためせい
  1. ので (node): Used for objective reasons or polite requests. It sounds softer than 'kara'. 2. から (kara): Emphasizes the reason itself. 3. (shi): Used when listing multiple reasons (e.g., A, B, and so on). 4. ため (tame): Formal, often used in written language or news to indicate cause/effect. 5. せい (sei): Used for negative consequences (blaming a cause).

Tip

Be careful with 'sei'. It implies that the cause is responsible for a bad result, so avoid using it for positive outcomes.
Examples

Examples in Context

See how these nuances change the meaning of your sentences.

(あめ)降った(ふった)せいで試合(しあい)中止(ちゅうし)になった。

Because it rained, the match was cancelled.

あめrain降ったふったfellせいでせいでdue to (negative)試合しあいmatch中止ちゅうしcancellation

忙しい(いそがしい)疲れている(つかれている)から、今日は帰ります。

I'm busy, and I'm tired, so I'm going home today.

忙しいいそがしいbusyand (listing reason)疲れているつかれているtiredからからbecause

風邪を引いた【ので】、学校を休みます。

Hint: Use the polite/objective reason marker.

Because I caught a cold, I will be absent from school.

Usage

Nuance and Register

Choosing the right connector depends on your relationship with the listener.

から vs ので

から

Subjective, emphasizes the reason.

寒いから窓を閉めて。

ので

Objective, polite, softer.

寒いので窓を閉めます。

Which of these is most appropriate for a formal business email explaining a delay?

  • 〜から
  • 〜ので
  • 〜せい

〜ので is the standard polite way to state a reason in professional settings.

Deep dive

Advanced Nuances

A closer look at the mechanics of these particles.

The 'Shi' Pattern

The 'shi' pattern is often used to imply 'there are other reasons too'. For example: 'A-san wa yasashii shi, kashikoi' (A is kind, and smart [and has other good qualities]). It is a very natural way to list attributes or reasons without being overly exhaustive.
Summary

Lesson Summary

You now have a toolkit for expressing causality in Japanese. Use 'node' for politeness, 'kara' for emphasis, 'shi' for lists, 'tame' for formal contexts, and 'sei' for negative outcomes.

理由
りゆうnoun
reason
中止
ちゅうしnoun
cancellation
疲れる
つかれるverb
to get tired
風邪
かぜnoun
cold (illness)

Practice this grammar interactively

Read the explanation above for free, then study it with quizzes, audio, and spaced repetition in the yomion app.

Open in the app