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Grammar Book

GrammarBook N5 : AはBです (A is B)

  • 20 Dec, 2025
  • Com 0

N5-G-001

GrammarBook N5 : AはBです (A is B)

Core

📝 Quick Summary (まとめ)

AはBですは、物事の名前や正体を伝える最も基本的な形です。
The ‘A wa B desu’ structure is the most basic way to state names or identities (A = B).

  • 「は」 (WA) = 橋 (Bridge) connecting the topic.
  • 「です」 (DESU) = Politeness marker that ends the sentence.

🔍 Layer B: Deepening (深掘り)

💡 Raya’s Hack (攻略法)

「は」は発音するときは「わ」になります。文の「主人公」に黄色い蛍光ペンを引くイメージで使いましょう!

‘は’ is pronounced as ‘WA’. Imagine using a yellow highlighter on the ‘protagonist’ of your sentence!

🚧 Joy’s Mistake (よくある間違い)

Scene: Joy introducing herself at a meeting.

Joy: 「わたし ジョイ です。」

❌ Wrong!

Why?

「は」を忘れると、主語と述語がバラバラになってしまいます。必ずセットで使いましょう。

If you forget ‘WA’, the subject and predicate fall apart. They must always be used as a set.

🔥 Layer C: Practice Loop

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

Level 1: 基礎ドリル (Basic)

Q1. I am a student. (Gakusei)

答え: わたしは がくせいです。

Use ‘Watashi’ (I) + WA + ‘Gakusei’ (Student) + DESU.

Q2. This is a book. (Hon)

答え: これは ほんです。

‘Kore’ (This) is the topic here.

Q3. Ken is Japanese. (Nihonjin)

答え: ケンさんは にほんじんです。

Add ‘-san’ to Ken’s name for politeness!

Q4. That is a cat. (Neko)

答え: それは ねこです。

‘Sore’ refers to something near the listener.

Q5. My name is Tanaka.

答え: わたしは たなかです。

Simple identity structure.

Level 2: 応用ドリル (Advanced)

Q6. あれは くるまです。 (Translate to English)

答え: That (over there) is a car.

‘Are’ refers to something far from both people.

Q7. きょうは あついです。 (Translate to English)

答え: Today is hot.

‘Kyou’ (Today) is the topic. ‘Atsui’ (Hot) is the state.

Q8. ラヤさんは せんせいです。 (Translate to English)

答え: Raya is a teacher.

Defining Raya’s profession.

Q9. これは わたしの ぺんです。 (Translate to English)

答え: This is my pen.

Adding ‘no’ (possession) into the ‘B’ part of the equation.

Q10. こーひーは 300えんです。 (Translate to English)

答え: Coffee is 300 yen.

A = Coffee, B = 300 yen. Perfect for a Tropical Cafe!

Related posts:

GrammarBook N5:~ではありません (A is not B – [Negative]) GrammarBook N5: ~ですか (The Question particle) GrammarBook N5: NのN (The の Particle) GrammarBook N5: The Particle は (topic marker)
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