用英语询问年龄和回答有几种方法

一楼的回答有问题。宾语从句用陈述语序应该是“Can you tell me how old you are?”

May I have your age?

---Can you tell me how old are you?
----It is secret.

How old are you?
What is your age?
In which year were you born?

How old are you? 这个最普通常用，但略显突兀，不礼貌，尤其若对方是女性。

Do you mind if my asking your age?
Do you mind if my asking how old you are?
你介意我问你的年龄吗？
这种用法更委婉，更容易接受。

楼主
secret是可数的要加a

How old are you?
Have your name please?/Your name please?
Would you mind if I knew your name?
Do you mind if I know your name?
I was wondering if you would mind my asking your name?
Could you please tell me your name?
Sall I have your namemark?