走那么快干什么？
“Why are you in such a hurry?”
THE DIALOGUE REEL
走了
“I'm going.”
走那么快干什么 ？
“Why are you in such a hurry?”
不对啊
“Wait.”
“Wait up, what's making you rush like that?”
In spoken Chinese, asking '...干什么' often carries an implicit judgment that the action being questioned is abnormal, excessive, or unnecessary.
LEARNING CHUNKS & PARTICLES
why; what for; doing what
A colloquial alternative to '为什么' that often conveys slight annoyance, skepticism, or surprise.
so fast
Used with '那么' to emphasize an extreme or unexpected degree of speed.
VOCABULARY & EXPRESSIONS
Parallel Spoken Cinema Scenes (语义近邻切片)
“Why did you leave so soon?”
“Why are you walking so fast? My endurance has always been better than yours.”
“Why rush like that? Wait for me!”