When's your birthday?/What day were you born?/What is your date of birth?

你的生日是什么时候？你是哪天出生的？你的生日是哪天？

What month were you born?/What year were you born?

你是几月份出生的？你是哪年出生的？

How old are you?/What's your age?

你多大了？

You look like you're in your twenties./You look twenty-something.

你看起来就像二十来岁的样子

You look young for your age.

你看起来比你实际年龄年轻。

He looks a lot older than his years.

他看起来比实际年龄老一些。

You could pass for twenty five.

不知道的人还以为你才25呢。

I'm pushing fifty.

我快50岁啦。

I'm over forty.

我已经40多岁了。

We're the same age./You're the same age as me.

我们同岁。

If you're old, then I'm ancient.

你要是算老，那我不都成古人了。

What's your sign?

你是什么星座的？

I don't pay attention to that stuff.

我从来不注意那些东西。

What's your Chinese astrological sign?

你是属什么的？

I was born in the year of the horse.

我是马年出生的。

I'm a dragon.

我属龙。

Conversation:

A: What's your sign?

你是什么星座？

B: I don't know, I don't pay attention to that stuff.

我不知道，我不是很在意这些。

A: What month were you born?

你是几月出生的？

B: I was born in July.

我是七月出生的。

A: Then you may be a Cancer or a Leo.

那么，你可能是巨蟹座或者是狮子座。