1、If you don't mind, could you tell me your age?

如果你不介意，可否告诉我你的年龄？

2、Would you mind disclosing your age?

你介意公开你的年龄吗？

3、Would you like to tell me your age?

你乐意告诉我你的年龄吗？

4、You look very young，would you mind telling me how old you are?

你看来很太年轻, 介意告诉我你几岁吗？

5、It is embarrassing to ask, but it would be much appreciated if you could let me know your age.

虽然这样问有点尴尬，但如果你能告诉我你的年龄会非常感激。