你知道我几岁吗？

Can you tell my age?

Do you know how old I am?

Do you know my age?

Source: Tatoeba

Sentence Composition

=1 你 nǐ you (informal, as opposed to courteous 您 nín)
=1 你 nǐ you (Note: In Taiwan, 妳 is used to address females, but in mainland China, it is not commonly used. Instead, 你 is used to address both males and females.)
2 知道 zhīdào
  1. to know; to become aware of
  2. also pr. zhīdao
3 我 wǒ
  1. I
  2. me
  3. my
4 几岁 jǐsuì how old are you? (familiar, or to a child)
=5 吗 má (coll.) what?
=5 吗 mǎ used in 嗎啡 mǎfēi
=5 吗 ma (question particle for "yes-no" questions)