你昨天晚上去哪儿?
“Where did you go last night?”
THE DIALOGUE REEL
你柯南哦?
“[Po-lun scoffs] Why did you take my phone?”
你昨天晚 上去 哪儿?
“Where did you go last night?”
“Don't dodge the question, tell me where you really were.”
Calling someone 'Conan' (from the previous turn) is a widespread Chinese colloquial metaphor for someone acting overly inquisitive, suspicious, or playing detective.
LEARNING CHUNKS & PARTICLES
last night / yesterday evening
A fundamental time word placed before or immediately after the subject to set the past timeframe.
where did (you) go / going where
A very common colloquial question phrase used to ask about someone's destination or whereabouts.