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Japanese Learning TIPS

The Difference Between 静か (shizuka) vs しずかな (shizuka na)|Japanese Grammar (N5–N3)

  • 18 Nov, 2025
  • Com 0
The Difference Between 静か (shizuka) vs しずかな (shizuka na)
(Joy in a library [Shizuka desu] vs. Joy pointing to a quiet house [Shizuka na ie])

“This room is quiet.” (Kono heya wa shizuka desu.)
“This is a quiet room.” (Kore wa shizuka na heya desu.)
Why does the second one have “Na”? This is the most important rule for **Na-Adjectives**. Let’s master it with Joy and Ken!

🗣 Conversation Scene

Joy is looking for a new apartment.

Joy
私は 静か(しずか) ところに 住(す)みたいです。
このアパートは 静かな(しずかな) ですか?

(I want to live in a “quiet” place. Is this apartment “quiet”?)
Ken
惜(お)しい!
「静か な ところ」と「静か です」が正解(せいかい)ですよ。

(So close! “Shizuka NA tokoro” and “Shizuka desu” are correct.)

💡 Explanation

Think of “Na” as glue. You need glue to stick the adjective to a noun.

Point 1: [Adjective] + [Noun] = Need “NA”

When “Shizuka” comes before a noun (Person, Place, Thing), you must add “Na”.

  • 静か な 部屋(へや)
    (Quiet room)
  • 静か な 人(ひと)
    (Quiet person)

Point 2: [Adjective] + Desu = NO “Na”

When “Shizuka” is at the end of the sentence (before Desu/Da), you do NOT use “Na”.

  • この部屋は 静か です。
    (This room is quiet.)
  • 彼は 静か でした。
    (He was quiet.)

📊 Comparison Table

Pattern Rule Example
Before a Noun Add NA Shizuka na heya
(Quiet room)
End of Sentence NO Na Heya wa shizuka desu
(Room is quiet)

🚧 Joy’s Mistake

(Describing her room)

❌ Wrong: 私の部屋は 静かな です。
(Do not put “Na” before “Desu”!)

✅ Right: 私の部屋は 静か です。
(Simple and correct.)

🔥 Practice Quiz

Tap to check the answer!

Q1. This library is quiet.
(Kono toshokan wa ______ desu.)
Answer: shizuka (静か)
End of sentence = No “Na”.
Q2. I like quiet places.
(______ tokoro ga suki desu.)
Answer: shizuka na (静かな)
Connecting to “tokoro” (place) = Need “Na”.
Q3. Is Mr. Tanaka quiet?
(Tanaka-san wa ______ desu ka?)
Answer: shizuka (静か)
End of sentence = No “Na”.
Keep practicing with JPLT!

 

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