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か [ka], かな [kana], and っけ [kke]: How to use these Japanese sentence-ending particles?

By: Mayumi Ito

In Japanese, the sentence-ending particles transcribed ka, かな transcribed kana, and っけ transcribed kke are all added to sentences that express some degree of uncertainty. You might use one of these particles when you are asking a question, expressing doubt, or indicating your memory is uncertain. Here’s a basic summary:

  • transcribed ka → Marks questions, but also some sentences that have other functions.

  • かな transcribed kana → Used to express uncertainty, as in “I wonder if…” or “I don’t know if…”

  • っけ transcribed kke → To express that you’re not certain your memory is correct.

In this post, we’ll look at all the uses of these three particles with some examples. We’ll also pay special attention to how the intonation affects the meaning of each particle. Let’s get started!

How to use か [ka] in Japanese?

The Japanese particle transcribed ka is used to mark the end of a question. For this reason, it is often called the “question particle.”

In a question

To mark that a Japanese sentence is a question, we simply add the question particle transcribed ka at the end of the sentence and use a rising intonation. In writing, we don’t need a question mark as long as transcribed ka is there.

学生さんです
Transcription: Gakusei-san desu ka.
Translation: Are you a student?
a yes-no question
学校はどちらです
Transcription: Gakkō wa dochira desu ka.
Translation: What school do you go to?
a content question

You’ll also use transcribed ka at the end of a question that appears within a sentence (an “indirect question”), however, your intonation doesn’t go up in those cases.

会議が何時に始まるか ➙まだ聞いていない。
Transcription: Kaigi ga nanji ni hajimaru ka ➙ mada kiite inai.
Translation: I still haven’t heard what time the meeting starts.
an indirect question

To express doubt or uncertainty

The particle transcribed ka can be used to express doubt or uncertainty in the following structure. The intonation doesn’t go up.

dictionary form

だろう / でしょう
Transcription: darō / deshō
Transcription: ka
子供たちだけで大丈夫でしょう
Transcription: Kodomotachi dake de .
Translation: I wonder if the children are alright on their own.

You might also use transcribed ka to indicate that you’re still processing information, and so it’s somewhat thus uncertain. The intonation may go down if the speaker is deeply impressed or troubled by the information.

Speaker A:
明日は雪になるそうですよ。
Transcription: Ashita wa yuki ni naru sō desu yo.
Translation: I’ve heard that it’s going to snow tomorrow.
Speaker B:
えっ、そうです➙ / ➘ 困ったなあ。
Transcription: E, sō desu ka. ➙ / ➘ Komatta nā.
Translation: Oh, is that so? That’s not good.

To suggest that someone do something

We can use transcribed ka in a negative question form to invite or urge the listener to do something.

明日うちに来ません
Transcription: Ashita uchi ni kimasen ka.
Translation: Why don’t you come to my place tomorrow?
ふくれるのもいい加減にしない
Transcription: Fukureru no mo ii kagen ni shinai ka.
Translation: Why don’t you stop sulking already?

In negative tag questions

You can use transcribed ka to form a couple types of negative tag questions, (little questions like “isn’t it?” or “don’t you?” that encourage the listener to reconsider). Use the structure below:

dictionary form

じゃない (です)
Transcription: ja nai (desu)
Transcription: ka
だから言ったじゃない➙ / ➘
Transcription: Dakara itta .
Translation: I told you so, didn’t I!
an accusation
大丈夫!まだ明日もあるじゃないです
Transcription: Daijōbu! Mada ashita mo aru .
Translation: It’s all right! You still have another chance tomorrow, don’t you?
an encouragement
ほら、昔ここに映画館があったじゃないです
Transcription: Hora, mukashi koko ni eigakan ga atta .
Translation: You see, there once was a movie theater here, right?
activating the listener’s knowledge

A couple of notes:

  • In the casual style of speech, female speakers usually drop from the structure above to soften the tone, as in:

    だから言ったじゃない
    Transcription: Dakara itta ja nai.
    Translation: I told you so, didn’t I?
  • Usually, the intonation is flat or falling, but if we use じゃない transcribed ja nai without as in the example below, the intonation may be rising:

    映画館があったじゃない ?
    Transcription: Eigakan ga atta ja nai?
    Translation: There was a movie theater, right?

To accept a new fact

You can use transcribed ka to indicate that you’ve discovered some new fact on the topic you already had a some knowledge about, and have accepted it.

ああ、犯人は執事だった
Transcription: Ā, han’nin wa shitsuji datta ka.
Translation: Oh, it was the butler who had done it. 
The speaker knew the butler was one of the suspects, but was personally suspecting someone else.

How to use かな [kana]?

Usually, かな transcribed kana is added to the end of a sentence is to indicate that the speaker has a doubt whether what they’re saying is true as in “I wonder…” or “I’m not sure if…” in English. It’s usually used in the plain style of speech.

  • かな transcribed kana is often used when the speaker is talking to themselves.

    (クンクン) この豆腐、まだ大丈夫かな
    Transcription: (kunkun) Kono tōfu, mada daijōbu kana.
    Translation: (Sniff sniff) I wonder if this tōfu is still OK.
  • When there is a listener, かな transcribed kana can also work as a question marker. The intonation still doesn’t go up.

    Speaker A:
    明日も雨かな
    Transcription: Ashita mo ame kana.
    Translation: Do you think it’s going to rain tomorrow too?
    Speaker B:
    うん、たぶん。
    Transcription: Un, tabun.
    Translation: Yeah, probably.

    Older male speakers sometimes use the polite form + かな transcribed kana to ask a question.

    明日も雨ですかな
    Transcription: Ashita mo ame desu kana.
    Translation: Do you think it’s going to rain tomorrow too?

How to use っけ [kke]?

The sentence-ending particle っけ transcribed kke is most often used to indicate that the speaker’s memories are uncertain. This particle generally follows the ta-form of the verb.

スマホ、どこに置いたっけ
Transcription: Sumaho, doko ni oitakke.
Translation: Where on earth did I put my smartphone?
Speaking to yourself, trying to remember.

The particle っけ transcribed kke itself is a casual expression, but we can use it in the polite style of speech along with a sentence ending like 〜ました transcribed ...mashita or 〜でした transcribed ...deshita including their negative forms.

Speaker A:
すみません、会議は12時からでしたっけ
Transcription: Sumimasen, kaigi wa jūni ji kara deshitakke.
Translation: Excuse me, (I don’t remember clearly but) does the meeting start at noon?
Seeking confirmation by expressing your memory is uncertain.
Speaker B:
いえ、2時からですよ。
Transcription: Ie, ni ji kara desu yo.
Translation: No, it starts at 2:00.

How to use っけ [kke] in different tenses

The particle っけ transcribed kke is always used in the form っけ transcribed takke or っけ transcribed dakke, even when you’re wondering about the present or future.

  • Past Tense

    Past tense forms in Japanese already end with transcribed ta or transcribed da, so if you’re uncertain about something that happened in the past, you can simply add っけ transcribed kke without further changes.

  • Present or Future Tense

    If you want to use っけ transcribed kke to express uncertainty about a present or future event, you can use the following structure:

    dictionary form

    (nonpast)

    んだ / んでした
    Transcription: nda / ndeshita
    っけ
    Transcription: kke

    For example:

    MeaningFormalityCorrect Incorrect

    “Are we going?”

    Casual

    行くんだっけ
    Transcription: ikunda kke
    行くっけ
    Transcription: ikukke

    Polite

    行くんでしたっけ
    Transcription: ikundeshita kke
    行きますっけ
    Transcription: ikimasu kke

    “Aren’t we going?”

    Casual

    行かないんだっけ
    Transcription: ikanainda kke
    行かないっけ
    Transcription: ikanai kke

    Polite

    行かないんでしたっけ
    Transcription: ikanaindeshita kke
    行きませんっけ
    Transcription: ikimasen kke

To sum up

In this article, we focused on transcribed ka, かな transcribed kana, and っけ transcribed kke, exploring various functions, the most important being…

  • Asking questions.

  • Expressing doubt.

  • Indicating the speaker’s memory is uncertain.

Make sure to read our other articles that will introduce you to more sentence-ending particles to help you speak like a native Japanese speaker. Meanwhile, we have prepared some activities for you to practice transcribed ka, かな transcribed kana, and っけ transcribed kke. Happy learning!

Meet the Author

Mayumi Ito

Mayumi Ito

A former university Japanese instructor with MAs in English and education, Mayumi has worked on various Mango Japanese projects since 2008.

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