Question words in Japanese

Question words in Japanese
By mastering these question words, your conversational skills will be much stronger.

い つ (itsu) : when

いつ きました か？
itsu kimashita ka?
When did you come?

ど こ (doko) : where

どこ から きました か？
doko kara kimashita ka?
Where did you come from?

どうして (doushite) : why

どうして きました か？
doushite kimashita ka?
Why did you come?

な ぜ (naze) : why

なぜ
naze?
Why?

だ れ (dare) : who

だれが きました か。
dare ga kimashita ka?
Who came?

何 (nani) : what

なにを買いましたか。
nani wo kaimashita ka.
What did you buy?

Main points:
Even with the question word a ka is used. (Except in casual spoken Japanese.)
The question word is at the beginning, but after the topic particle wa if there is one.

あなた は だれ です か？
anata wa dare desu ka?
Who are you? (the question word dare is after the wa)