他十岁了用英语表达是：He is ten years old；

years：

n. 年; 日历年; 一年时间; 与某事相关的一年; 年度。

year的复数。

old：adj. 古老的; 老的; 具体年龄; (多少)岁; 年纪; 年纪大的; 不年轻的; 老年人。

相关介绍

He is ten years old.

他十岁了。

It is his birthday; he is just ten years old.

今天是他生日，他正好10岁。

He is either nine or ten years old.

他介于九到十岁之间。

He is ten./ He is ten years old.

他十岁。

I'd say he was 25 to 30 years old.

我猜他在25至30岁之间。

He was barely 20 years old and already running his own company.

他只有20岁，却已经营起自己的公司了。

I was twenty years old and ready for anything.

我当时二十岁，什么都愿意去做。