JLPT N4 - Grammar ๐ŸŒŸ ใ‹ใฉใ†ใ‹ ka dou ka

Japanese grammar pattern โ€œใ€œใ‹ใฉใ†ใ‹โ€ (ka dou ka) labeled N4 on a teal background, used to express โ€œwhether or notโ€ฆโ€ when embedding a question into a sentence.

Have you ever been in a situation where you’re just not sure? Maybe you’re wondering if your crush likes you, if that new ramen place is actually good, or if it’s going to rain during your long-awaited picnic.

In English, we use "whether or not" to talk about these Yes-or-No possibilities. In Japanese, we have a super handy expression for exactly that: ใ‹ใฉใ†ใ‹ (ka dou ka).

Imagine you're invited to a karaoke party. Your friend asks, "Can you come?" and you're still checking your schedule. You’d say, "I'll let you know whether or not I can go."

It’s an N4 level grammar point that helps you combine a Yes/No question into a larger sentence. Whether you’re double-checking facts or expressing doubt, this phrase makes your Japanese sound much more natural and sophisticated.

Ready to clear up the mystery of "whether or not"?
Let’s dive in!

 

 

 

ใ‹ (ka) vs ใ‹ใฉใ†ใ‹ (ka douka)
You might wonder, “Can't I just use ใ‹?” Yes, you can. However, the nuance changes slightly.

 

ใ‹ (ka)
Used when there is a question word like who, what, where, or when.

ใฉใ“ใซ่กŒใใ‹ใ€ๆ•™ใˆใฆใใ ใ•ใ„ใ€‚
ใฉใ“ใซ ใ„ใ ใ‹ใ€ใŠใ—ใˆใฆ ใใ ใ•ใ„ใ€‚
doko ni iku ka, oshiete kudasai.
Please tell me where you are going.

 

ใ‹ใฉใ†ใ‹ (ka douka)
Used specifically for Yes/No situations where there is no question word.
It feels more balanced because it considers both the “Yes” and “No” outcomes equally.

ใ‚ซใƒฉใ‚ชใ‚ฑใซ่กŒใใ‹ใฉใ†ใ‹ใ€ๆ•™ใˆใฆใใ ใ•ใ„ใ€‚
ใ‹ใ‚‰ใŠใ‘ ใซ ใ„ใ ใ‹ใฉใ†ใ‹ใ€ใŠใ—ใˆใฆ ใใ ใ•ใ„ใ€‚
karaoke ni iku ka dou ka, oshiete kudasai.
Please let me know whether or not you will go to karaoke.

 

 

 

ๆ˜Žๆ—ฅใ€้›จใŒ้™ใ‚‹ใ‹ใฉใ†ใ‹ๅคฉๆฐ—ไบˆๅ ฑใ‚’ใƒใ‚งใƒƒใ‚ฏใ—ใพใ™ใ€‚
ใ‚ใ—ใŸใ€ใ‚ใ‚ ใŒ ใตใ‚‹ ใ‹ใฉใ†ใ‹ ใฆใ‚“ใใ‚ˆใปใ† ใ‚’ ใกใ‡ใฃใ ใ—ใพใ™ใ€‚
ashita, ame ga furu ka dou ka tenki yohou o chekku shimasu.
I will check the weather forecast to see whether or not it will rain tomorrow.

 

้ตใ‚’ใ‹ใ‘ใŸใ‹ใฉใ†ใ‹ๅฟƒ้…ใซใชใฃใฆใ€ๅฎถใซๆˆปใ‚Šใพใ—ใŸใ€‚
ใ‹ใŽ ใ‚’ ใ‹ใ‘ใŸ ใ‹ใฉใ†ใ‹ ใ—ใ‚“ใฑใ„ ใซ ใชใฃใฆใ€ใ„ใˆ ใซ ใ‚‚ใฉใ‚Šใพใ—ใŸใ€‚
kagi o kaketa ka dou ka shinpai ni natte, ie ni modorimashita.
I became worried about whether or not I locked the door, so I went back home.

 

ๆ–ฐใ—ใ„ใƒกใƒ‹ใƒฅใƒผใŒใ“ใ‚Œใงใ„ใ„ใ‹ใฉใ†ใ‹ใ€ๅบ—้•ทใซ่žใ„ใฆใฟใ‚ˆใ†ใ€‚
ใ‚ใŸใ‚‰ใ—ใ„ ใ‚ใซใ‚…ใ† ใŒ ใ“ใ‚Œ ใง ใ„ใ„ ใ‹ใฉใ†ใ‹ใ€ใฆใ‚“ใกใ‚‡ใ† ใซ ใใ„ใฆ ใฟใ‚ˆใ†ใ€‚
atarashii menyuu ga kore de ii ka dou ka, tenchou ni kiite miyou.
I will try asking the manager whether or not this new menu is okay.

 

ๆ˜จๆ—ฅใฎๆตทใฏๅ†ทใŸใ‹ใฃใŸใ‹ใฉใ†ใ‹ๆ•™ใˆใฆใ€‚
ใใฎใ† ใฎ ใ†ใฟ ใฏ ใคใ‚ใŸใ‹ใฃใŸ ใ‹ใฉใ†ใ‹ ใŠใ—ใˆใฆใ€‚
kinou no umi wa tsumetakatta ka dou ka oshiete.
Tell me whether or not the sea was cold yesterday.

 

ๅฅฝใใชไบบใŒ่‡ชๅˆ†ใฎใ“ใจใ‚’ๅฅฝใใ‹ใฉใ†ใ‹ใ€ๆฏŽๆ—ฅ่€ƒใˆใฆใ—ใพใ„ใพใ™ใ€‚
ใ™ใ ใช ใฒใจ ใŒ ใ˜ใถใ‚“ ใฎ ใ“ใจ ใ‚’ ใ™ใ ใ‹ใฉใ†ใ‹ใ€ใพใ„ใซใก ใ‹ใ‚“ใŒใˆใฆ ใ—ใพใ„ใพใ™ใ€‚
suki na hito ga jibun no koto o suki ka dou ka, mainichi kangaete shimaimasu.
I end up thinking every day about whether or not the person I like likes me.

 

ใ“ใฎใ‚ขใƒ—ใƒชใŒไพฟๅˆฉใ ใฃใŸใ‹ใฉใ†ใ‹ใ€ใ‚ใจใงๅ ฑๅ‘Šใ—ใฆใใ ใ•ใ„ใ€‚
ใ“ใฎ ใ‚ใทใ‚Š ใŒ ในใ‚“ใ‚Š ใ ใฃใŸ ใ‹ใฉใ†ใ‹ใ€ใ‚ใจ ใง ใปใ†ใ“ใ ใ—ใฆ ใใ ใ•ใ„ใ€‚
kono apuri ga benri datta ka dou ka, ato de houkoku shite kudasai.
Please report later whether or not this app was useful.

 

ๅฝผใŒ็‹ฌ่บซใ‹ใฉใ†ใ‹ใ€ใ•ใ‚Šใ’ใชใๅ‹้”ใซ่žใ„ใฆใฟใ‚ˆใ†ใจๆ€ใ†ใ€‚
ใ‹ใ‚Œ ใŒ ใฉใใ—ใ‚“ ใ‹ใฉใ†ใ‹ใ€ใ•ใ‚Šใ’ใชใ ใจใ‚‚ใ ใก ใซ ใใ„ใฆ ใฟใ‚ˆใ† ใจ ใŠใ‚‚ใ†ใ€‚
kare ga dokushin ka dou ka, sarigenaku tomodachi ni kiite miyou to omou.
I am thinking of casually asking my friend whether or not he is single.

 

็ŠฏไบบใŒๅฝผๅฅณใ ใฃใŸใ‹ใฉใ†ใ‹ใฏใ€ใ„ใพใ ใซใ‚ใ‹ใ‚Šใพใ›ใ‚“ใ€‚
ใฏใ‚“ใซใ‚“ ใŒ ใ‹ใฎใ˜ใ‚‡ ใ ใฃใŸ ใ‹ใฉใ†ใ‹ ใฏใ€ใ„ใพใ ใซ ใ‚ใ‹ใ‚Šใพใ›ใ‚“ใ€‚
hannin ga kanojo datta ka dou ka wa, imada ni wakarimasen.
We still do not know whether or not she was the culprit.

 

 

 

  • Grammar Point: ใ‹ใฉใ†ใ‹ (ka douka)
  • JLPT Level: N4
  • Meaning: Whether or not…
  • Quick Explanation: Use this when you want to embed a Yes/No question into a sentence. It’s perfect for expressing uncertainty or asking for confirmation.


So that’s how we use ใ‹ใฉใ†ใ‹!
It’s a powerful and flexible expression for navigating the “maybe” zones of life in Japanese. Whether you're checking a recipe, confirming the weather, or asking about a friend's plans, ใ‹ใฉใ†ใ‹ helps your speech sound smooth, clear, and polite.

 

่‡ชๅˆ†ใฎๆ—ฅๆœฌ่ชžใŒไผใ‚ใ‚‹ใ‹ใฉใ†ใ‹ใ€ๅ‹‡ๆฐ—ใ‚’ๅ‡บใ—ใฆ่ชฐใ‹ใซ่ฉฑใ—ใ‹ใ‘ใฆใฟใฆใญ๏ผ
ใ˜ใถใ‚“ ใฎ ใซใปใ‚“ใ” ใŒ ใคใŸใ‚ใ‚‹ ใ‹ใฉใ†ใ‹ใ€ใ‚†ใ†ใ ใ‚’ ใ ใ—ใฆ ใ ใ‚Œใ‹ ใซ ใฏใชใ—ใ‹ใ‘ใฆ ใฟใฆ ใญใ€‚
jibun no nihongo ga tsutawaru ka dou ka, yuuki o dashite dareka ni hanashikakete mite ne.
Whether or not your Japanese will come across, be brave and try speaking to someone!

 

Now it’s your turn!
Try making a sentence about something you're curious about using ใ‹ใฉใ†ใ‹. Practice makes progress!

 

Your Sensei,
Hikari ๐Ÿ‘ฉ๐Ÿป‍๐Ÿซโœจ

 

 


 

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