Meaning of nǎ:
nǎ
哪
Pronoun
how; which; used in 哪吒[Ne2 zha1]; Taiwan pr. [nuo2]; which? (interrogative, followed by classifier or numeral-classifier)
Nǐ shì cóng nǎ lǐ zhīdào zhège xiāoxi de?
你是从哪里知道这个消息的？
Where did you hear about this news?
Nǐ xǐhuān nǎ bù diànyǐng?
你喜欢哪部电影？
Which movie do you like?
Nǐ zhīdào Nǎzhā de gùshì ma?
你知道哪吒的故事吗？
Do you know the story of Nezha?
Jīntiān nǐ xiǎng qù nǎ'er?
今天你想去哪儿？
Where do you want to go today?
Nǐ láizì nǎ gè guójiā?
你来自哪个国家？
Which country are you from?
Particle
(emphatic sentence-final particle, used instead of 啊[a5] after a word ending in "n")
Nǐ dàodǐ xiǎng qù nǎ na?
你到底想去哪哪？
Where exactly do you want to go, hmm?
