Explanation
Used to form interrogative questions and emphasize the question word for 'what', 'how'.
Formation
なん + Counter / なん + Verb / なん + Adjective
Detailed explanation
The なん～ grammar point is used to form interrogative questions and emphasize the question word for 'what' or 'how'. It is an abbreviation of '何' meaning 'what'. Its usage can vary depending on whether it is used with a counter, verb, or adjective.
Examples
あなたはなん歳ですか？
Anata wa nan-sai desu ka?
How old are you?
これはなんですか？
Kore wa nan desu ka?
What is this?
彼はなんで来ましたか？
Kare wa nan de kimashita ka?
Why did he come?
あのレストランはなんと言う名前ですか？
Ano resutoran wa nan to iu namae desu ka?
What is the name of that restaurant?
Practice
Grammar content sourced from hanabira.org.