天空变得越来越暗了。

The sky grew darker and darker.

Source: Tatoeba

Sentence Composition

1 天空 tiānkōng sky
2 变得 biànde to become
3 越来越 yuèláiyuè more and more
=4 暗 àn variant of 暗 àn
=4 暗 àn
  1. dark
  2. to turn dark
  3. secret; hidden
  4. (literary) confused; ignorant
=4 暗 àn
  1. (literary) to close (a door)
  2. to eclipse
  3. confused; ignorant (variant of 暗 àn)
  4. dark (variant of 暗 àn)
=5 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)
=5 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 無 wú or 不 bù) completely (not); entirely (not); (not) in the least
  4. to understand clearly (variant of 瞭 liǎo)
=5 了 liǎo
  1. (of eyes) bright
  2. clear-sighted
  3. to understand clearly
=5 了 liào unofficial variant of 瞭 liào