你知道他們是誰嗎?

Do you know who they are?

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 他們 tāmen they; them
=4 是 shì
  1. to be (followed by substantives only)
  2. correct; right; true
  3. (respectful acknowledgement of a command) very well
  4. (adverb for emphatic assertion)
=4 是 shì variant of 是 shì
5 誰 shéi
  1. who
  2. also pr. shuí
=6 嗎 má (coll.) what?
=6 嗎 mǎ used in 嗎啡 mǎfēi
=6 嗎 ma (question particle for "yes-no" questions)