我今年100岁英文怎么说

你今年100岁可以用英语说成 "You are 100 years old this year." 或者 "You are a centenarian this year."

"Centenarian" 是指100岁的人，来自拉丁语 "centenarius"，意思是 "百岁的人"。

下面是一些例句：

"My grandma is a centenarian. She turned 100 last year." (我的奶奶是一位百岁老人。她去年100岁了。)
"I can't bepeve that he's a centenarian. He doesn't look a day over 80." (我简直不敢相信他已经是百岁老人了。他看起来不到80岁。)
"The town held a special celebration for its centenarians, honoring their long and fulfilpng pves." (这个城镇为庆祝其百岁老人举办了一场特别庆祝活动，以表彰他们漫长而充实的生活。)