(1)首先来看看，准确岁数的表达。

　　1.他三十岁：He is thirty (years old)./ He is thirty years of age./He is aged of thirty.

　　2.他已经三十岁了：He is already thirty./He has reached the age of thirty.

　　3.一个三十岁的男人：a thirty-year-old man/ a man who is thirty/a man of thirty/ a man aged thirty/ a man at the age of thirty

　　(2) 大约模糊岁数。

　　1.他年近三十岁了：He is nearly thirty./He is near to thirty./He is toward thirty./He is getting on thirty./He is hard on thirty.

　　2.他三十好几了：He is in his middle thirty./ He is well over thirty.

　　3.他与我同岁：He is as old as I am./ He is as old as me.

　　(3)绝大部分的人都喜欢别人称赞自己年轻，那么如何在知道别人年龄之后再称赞他/她年轻呢?

　　1.她看上去比实际年龄小：She looks younger than her years.

　　2.她看上去比实际年龄小十岁：She looks ten years younger than her real age.

　　3.我年纪比你大：I am older then you.

　　e.g. I appreciate that. Speaking of which, I was wondering if I am older than you, because you look so young.

　　非常感谢，说起这个，我在想我一定比你大因为你看起来很年轻.

　　4.她三十岁了，但看上去才二十岁：She is thirty but looks twenty.

　　e.g. She is thirty but she appears young.

　　她三十岁了， 但看起来很年轻。

　　(5)各种年龄层次怎么说?

　　1.一个未成年人：a youngest/ a teenager/ a juveniles/ an adolescent/ a minor

　　2.一个成年人：a grown-up/ an adult/ a person of mature years

　　3.一个中年人：a middle-aged man/ a man of middle age

　　4.一位老人：an old man/ am elderly man/ an aged man/ a man in his old age