口语点：Who is that guy sitting(standing) next to（beside） you?
正式点：Who is that man/woman/person sitting/standing next to you?
楼上那个seating明显不对
坐在你旁边的那个人是谁 英语站在 / 坐在你旁边的那个人是谁
口语点：Who is that guy sitting(standing) next to（beside） you?
正式点：Who is that man/woman/person sitting/standing next to you?
楼上那个seating明显不对