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Grammar Book

GrammarBook N5: ~からです (Because / Reason)

  • 01 Feb, 2026
  • Com 0

N5-G-056

~からです (Because / Reason)

Supporting / Reasoning

👀 Layer A: Visual Guide (直感理解)

📝 Quick Summary (まとめ)

「なぜ?」と聞かれたときに、理由(りゆう)を答える表現です。「~だからです」という意味です。
Use “Kara” to state the reason (“Because…”). It usually comes at the end of the reason clause. When answering “Why?”, end with “Kara desu”.

Connector: [Reason] から、[Result]。
Answer: [Reason] からです。

🔗 Connected Grammar (関連文法):

  • N5-G-057: ~ので (Softer “Because”)
  • N5-G-047: ~てから (After – Different meaning!)

🔍 Layer B: Deepening (深掘り)

💡 Raya’s Hack (攻略法)

日本語は「理由が先」!
英語では “I study because I have a test” (結果→理由) ですが、日本語は逆です。
“Test ga aru kara, benkyou shimasu.” (理由→結果)
常に「理由」を先に言うクセをつけましょう!

Japanese syntax is “Reason First”. Always put the reason clause with “Kara” BEFORE the result clause. “Reason KARA, Result.”

🚧 Joy’s Mistake (よくある間違い)

Scene: Joy explains why he is late.

Joy: 「寝坊しました。だから 遅れました。」
(Nebou shimashita. Dakara okuremashita.)

⚠️ A bit childish/blunt.

Why?

「だから (Dakara)」を文の頭に使うと、少しぶっきらぼう(乱暴)に聞こえることがあります。
一つの文につなげて「寝坊しましたから、遅れました」と言う方がスマートです。

Starting a sentence with “Dakara” (Therefore/So) can sound blunt or argumentative. It’s smoother to connect the sentences with “Kara”. “Nebou shimashita KARA, okuremashita.”

🔥 Layer C: Practice Loop

Now it’s time to test your learning through the next 10 practice drills!

Level 1: Connect Reason and Result

Q1. It’s hot (Atsui) -> I drink water.

答え: 暑いから、水を 飲みます。

(Atsui kara, mizu o nomimasu.)

Q2. It’s expensive (Takai) -> I won’t buy it.

答え: 高いから、買いません。

(Takai kara, kaimasen.)

Q3. I have no time (Jikan ga nai) -> I won’t go.

答え: 時間がないから、行きません。

(Jikan ga nai kara… *Casual form before Kara is common*)

Q4. It’s delicious (Oishii) -> I eat a lot.

答え: 美味しいから、たくさん 食べます。

(Oishii kara…)

Q5. Tomorrow is a holiday (Yasumi) -> I’m happy.

答え: 明日は 休みだから、嬉しいです。

(Yasumi DA kara… *Noun needs DA*)

Level 2: Answering “Why?”

Q6. Why do you study Japanese? (Like / Suki)

答え: 日本が 好きだからです。

(Nihon ga suki da kara desu. *Na-adj/Noun + DA kara*)

Q7. Why did you go to the hospital? (Sick / Byouki)

答え: 病気だからです。

(Byouki da kara desu.)

Q8. Why don’t you eat? (Not hungry / Onaka ga suite imasen)

答え: お腹が 空いていませんから。

(Polite form + kara is also okay at the end)

Q9. Why are you sleepy? (Watched movie yesterday)

答え: 昨日 映画を 見たからです。

(Kinou eiga o mita kara desu.)

Q10. Translate: “I will go because I have time.”

答え: 時間が あるから、行きます。

(Jikan ga aru kara, ikimasu.)


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Related posts:

GrammarBook N5: The Particle が (identifier/existence marker) GrammarBook N5: ~ます / ~ません GrammarBook N5: ~てください (The Polite Request) GrammarBook N5: ~ほど~ない (Not as… as…)
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GrammarBook N5: ~ので (Because - Polite)
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