The expression かどうか (
ka dou ka) is used when we express doubt and uncertainty about whether an action is performed or not or whether it was performed in the past or not.
I don't know
whether or not,
if or not.
In this post we learn more about the meaning of かどうか, how it is formed and when かどうか is used through real example sentences.
かどうか Whether or not
かどうか is a widely used expression in Japanese, in situations of doubt, ambiguity and lack of clarity.
We do not know whether an action will be performed or not or we are not sure about a certain condition and situation.
We need to ask and verify to be sure.
Sentence A + かどうか + Sentence B
かどうか combines 2 sentences:
- in the first one the it is expressed the fact, the action
- in the second one, we often find in colloquial context the verb 分からない
don't know iffrom the dictionary form 分かる
The second sentence uses verbs and expressions of various kinds.
We can find the following verbs after かどうか:
be in doubt,
He asked his wife whether or not she would come with him.
I'm not sure whether or not I should talk to her about it.
How かどうか is formed
The expression is formed
- by the interrogative particle か which replaces in Japanese
the question mark ?
- the interrogative pronoun どう meaning
Do you know if it will be sunny tomorrow?
⇨ 晴れるか晴れないか: Is it sunny or isn't it sunny?
I don't know whether or not I can go back to Japan this year.
かどうか is often preceded by a verb in the potential form
I don't know whether or not I can go.
Or we can also use:
Example using the noun 気持ち
I want to ask him whether or not he feels the same.
I don't know whether or not that is true.
い Adjective: 美味しい
I don't know whether or not this dish is delicious.
な Adkective: 好きな
I don't know whether or not my friend likes Japanese food.
Did you ask her how she was?
⇨ Did you ask her if she's okay or not?
Examples of かどうか
Ask him if he will attend the meeting.
I doubt whether or not John will come on time.
- 疑わしい is a い Adjective and means
doubtfuland the verb from which it is derived 疑う
I have to decide whether or not to depart.