nǎ
r
1
where?
2
wherever
3
anywhere
不好意思,洗手间在哪儿?
Excuse me, where is the bathroom?
你在哪儿?
Where are you?
我不知道应该要往哪儿走。
I don't know which way I should go.
他去哪儿了?
Where did he go?