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Grammar Book

GrammarBook N5: でしょう

  • 01 Feb, 2026
  • Com 0
N5-G-055

でしょう (Probably / Right?)

Supporting / Uncertainty

👀 Layer A: Visual Guide (直感理解)

📝 Quick Summary (まとめ)

「たぶん~だと思います(推量)」や「~ですよね?(同意・確認)」という意味で使います。「です」よりも柔らかく、断定を避ける表現です。
Use “Deshou” to express probability (“Probably…”) or to seek confirmation (“Right?”). It softens the statement compared to “Desu”.

Prediction (⤵): 明日は 雨 でしょう。(It will probably rain.)
Confirmation (⤴): これは ケンさんの でしょう?(This is yours, right?)

🔗 Connected Grammar (関連文法):

  • N5-G-053: よ / ね (Casual Agreement “Ne”)
  • N5-G-054: かな (Casual Wondering “Kana”)

🔍 Layer B: Deepening (深掘り)

💡 Raya’s Hack (攻略法)

「だろう」は「でしょう」のカジュアル版!
友達と話すときは「でしょう」の代わりに「だろう」を使います。
* 丁寧:明日は 雨 でしょう。
* カジュアル:明日は 雨 だろう。
男の子っぽい響きがあるので、女の子は単に「でしょ」と言うことも多いよ!

“Darou” is the casual version of “Deshou”. It sounds a bit masculine. Females often just shorten it to “Desho” in casual speech. “Ashita ame desho?”

🚧 Joy’s Mistake (よくある間違い)

Scene: Joy invites Ken to eat.

Joy: 「一緒に 食べる でしょう!」
(Issho ni taberu deshou!)

❌ Sounds like a prediction!

Why?

これだと「あなたは(たぶん)一緒に食べるだろう(予言)」という意味になってしまいます。
誘うときは「~ましょう(Mashou)」です。
正解は「一緒に 食べましょう!」です。

“Deshou” implies a guess or prediction about the future. It does not mean “Let’s”. To invite, use “Mashou”. Correct: “Issho ni tabemashou!”

🔥 Layer C: Practice Loop

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

Level 1: Prediction (Probably…)

Q1. It will probably rain tomorrow. (Ashita, Ame)
答え: 明日は 雨 でしょう。

(Ashita wa ame deshou. ⤵)

Q2. He is probably busy. (Kare, Isogashii)
答え: 彼は 忙しい でしょう。

(Kare wa isogashii deshou. *i-adj + deshou*)

Q3. It will probably be cold. (Samui)
答え: 寒い でしょう。

(Samui deshou.)

Q4. Mr. Tanaka will probably come. (Kuru)
答え: 田中さんは 来る でしょう。

(Tanaka-san wa kuru deshou. *Plain Verb + deshou*)

Q5. It’s probably convenient. (Benri)
答え: 便利 でしょう。

(Benri deshou. *Na-adj stem + deshou*)

Level 2: Confirmation (Right?)

Q6. You are Japanese, right? (Nihon-jin)
答え: 日本人 でしょう?

(Nihonjin deshou? ⤴)

Q7. This bag is expensive, isn’t it? (Takai)
答え: このかばんは 高い でしょう?

(Takai deshou? ⤴)

Q8. Tomorrow is a holiday, right? (Yasumi)
答え: 明日は 休み でしょう?

(Ashita wa yasumi deshou? ⤴)

Q9. You are going too, right? (Anata mo, Iku)
答え: あなたも 行く でしょう?

(Anata mo iku deshou? ⤴)

Q10. Translate: “It will probably be fine.” (Daijoubu)
答え: 大丈夫 でしょう。

(Daijoubu deshou. ⤵)


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Related posts:

GrammarBook N5 : AはBです (A is B) GrammarBook N5: The Particle も (also) GrammarBook N5: い-adjectives GrammarBook N5: ~たいです
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