Subject + 去世
The verb 去世 (qùshì) means "to pass away" or "to die." It is a respectful and euphemistic way to refer to someone's death, more polite than the direct word 死 (to die). It is the standard term used in news reports, obituaries, and formal communication.
他的祖父去年冬天去世了。
tā de zǔfù qùnián dōngtiān qùshìle.
His grandfather passed away last winter.
听说那位老教授上个月去世了,真可惜。
tīngshuō nà wèi lǎo jiàoshòu shàng gè yuè qùshìle, zhēn kěxī.
I heard that the old professor passed away last month; what a pity.
她在家人的陪伴下安详地去世。
tā zài jiārén de péibàn xià ānxiáng de qùshì.
She passed away peacefully in the company of her family.