那可不是为了帮你吗?
“That was to help you.”
THE DIALOGUE REEL
却被我打伤的人是谁?
“but ended up wounded by me?”
那可不 是 为了 帮你 吗 ?
“That was to help you.”
“Lu Wuyi's not easy to fool. Wangyan, are you okay?”
“I took all that risk solely for your sake, so don't question me.”
Using negative rhetorical questions with modal adverbs like '可' is a standard way in Mandarin to express justified indignation or demand emotional acknowledgment.
LEARNING CHUNKS & PARTICLES
isn't that exactly because...
Used rhetorically at the start of a clause to assert that the following reason is undeniably true.
for the sake of helping you
A straightforward purposive clause used to emphasize helpful intent.
Forms a rhetorical question that expects strong agreement from the listener.