Breakdown of chinguege keikeureul sa dallago butakhaesseoyo.
Questions & Answers about chinguege keikeureul sa dallago butakhaesseoyo.
사 달라고 comes from the grammar pattern -(아/어) 달라고 하다, which means “to ask someone to do something for you.”
• 사 = the verb stem “buy” (from 사다)
• -아/어 달라고 = “(I) ask (you) to … for me” + quotation marker -고
So 사 달라고 literally embeds your request “buy (it) for me” before the main verb 부탁했어요.