你的哥哥在哪里工作?
Nǐde gēge zài nǎlǐ gōngzuò?
Where does your elder brother work?
你家在哪里?
Nǐ jiā zài nǎlǐ?
Where is your home?
你要去哪里?
Nǐ yào qù nǎlǐ?
Where are you going?