第九用英文怎么说十

第九用英语说是 "ninth".

来源：英语中的数字词源自拉丁语，"ninth" 来自拉丁语 "nonus"，意思是 "九".

例句:

He finished ninth in the race. (他在比赛中排在第九位)
The company's ninth anniversary is next month. (公司的第九个周年纪念日是下个月)
He is the ninth person to hold that position. (他是第九位担任那个职位的人)