你認識史密斯小姐多久了？

How long have you known Miss Smith?

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 認識 rènshi
  1. to know
  2. to recognize
  3. to be familiar with
  4. to get acquainted with sb
  5. knowledge
  6. understanding
  7. awareness
  8. cognition
3 史密斯 Shǐmìsī Smith (name)
=4 小姐 xiǎojie
  1. young lady
  2. miss
  3. (slang) prostitute

classifiers: 個, 位
=4 小姐 xiǎojiě
  1. (dated or Mainland China slang) prostitute
  2. Miss (a term of address for a young or unmarried woman)
  3. prostitute
  4. young lady
  5. young lady of gentry family
5 多久 duōjiǔ
  1. (of time) how long?
  2. (not) a long time
=6 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)
=6 了 liǎo
  1. to finish
  2. (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget")
  3. (literary) (usually followed by a negative such as 无 wú or 不 bù) completely (not); entirely (not); (not) in the least
  4. to understand clearly (variant of 了 liǎo)
=6 了 liǎo
  1. (of eyes) bright
  2. clear-sighted
  3. to understand clearly
=6 了 liào unofficial variant of 瞭 liào