他12岁了用英语怎么表达

他12岁了 He is 12 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

他在12岁时写了他的第一部歌剧并且还写了上百首美妙动听的.古典音乐。

He wrote his first opera at the age of12 and hundreds of beautiful pieces of music for the classical orchestra.

他要12岁了。

And he was eleven years old.

This book is the result of 25 years of research.

这本书是25年研究的结晶。

This model was two years in the making.

这种型号是用两年时间制成的。

My new job is much the same as the old one.

我的新工作和旧工作差不多。

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

我猜他在25至30岁之间。