湯姆沒發現瑪莉離開了。

Tom didn't realize that Mary was gone.

Source: Tatoeba

Sentence Composition

1 湯姆 Tāngmǔ Tom (name)
=2 沒 méi (negative prefix for verbs) have not; not
=2 沒 mò
  1. drowned
  2. to end
  3. to die
  4. to inundate
3 發現 fāxiàn
  1. to notice; to become aware of
  2. to discover; to find; to detect
  3. a discovery
4 瑪莉 Mǎlì a transliteration of the English female given name Mary
5 離開 líkāi to depart; to leave
=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