Meaning
Embeds a question with two possibilities: whether something is true or not.
Formation
- Plain form + かどうか: 降るかどうか分かりません
- Nouns and na-adjectives drop だ: 必要かどうか
When to use it
- Core use
- An embedded yes-no question
Examples
20 sentences-
明日雨が降るかどうか分かりません
I do not know whether it will rain tomorrow.
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予約が必要かどうか確認します
I will check whether a reservation is necessary.
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箱の中に猫がいるかどうか見てみます
I will check whether the cat is inside the box.
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まだ終電があるかどうか駅員に聞きました
I asked the station attendant whether the last train was still available.
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祭りの切符が残っているかどうか調べます
I will check whether any festival tickets remain.
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この靴が足に合うかどうか歩いてみました
I walked around to see whether the shoes fit.
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このカレーが辛いかどうか店員に聞きました
I asked the server whether this curry was spicy.
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スマホが直ったかどうか電源を入れてみます
I will turn on the phone to see whether it has been fixed.
12 more examples
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今日は富士山が見えるかどうか分かりません
I do not know whether Mount Fuji will be visible today.
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今夜お客さんが来るかどうか母に確認します
I will ask my mother whether guests are coming tonight.
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明後日は雨かどうかまだ分かりません
We do not yet know whether it will rain the day after tomorrow.
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この部屋は静かかどうかまだ分かりません
We do not yet know whether this room is quiet.
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この道は安全かどうかまだ分かりません
We do not yet know whether this road is safe.
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彼はもう家に帰ったかどうかまだ分かりません
We do not yet know whether he has already gone home.
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今度の試験は難しいかどうかまだ分かりません
We do not yet know whether the coming exam will be difficult.
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その荷物は重いかどうかまだ分かりません
We do not yet know whether that luggage is heavy.
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電車は五時に着くかどうかまだ分かりません
We do not yet know whether the train will arrive at five.
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田中さんは今日来るかどうかまだ分かりません
I do not know yet whether Tanaka will come today.
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その店は休みかどうかまだ分かりません
We do not yet know whether that shop is closed for the day.
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新しい先生は親切かどうかまだ分かりません
We do not yet know whether the new teacher is kind.
Important notes
- かどうか embeds a yes-or-no question.
Common mistakes
- With a question word use か alone: いつ来るか, not いつ来るかどうか.
Check yourself
Pick the translation of each sentence. The wrong options translate similar patterns, so watch the grammar rather than the words.
Similar grammar
Hear it in podcasts
The pattern appears in these episodes. They open in the app with the transcript and translation.
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