她的母親正在寫信。

Her mother is writing a letter.

Source: Tatoeba

Sentence Composition

1 她 tā she
=2 的 de
  1. of; ~'s (possessive particle)
  2. (used after an attribute when it modifies a noun)
  3. (used at the end of a declarative sentence for emphasis)
  4. (used after a noun, verb or adjective to form a nominal expression, as in 皮革的 pígéde "one made of leather" or 跑堂儿的 pǎotángrde "a waiter (literally, one who runs back and forth in a restaurant)" or 新的 xīnde "new one")
  5. also pr. dì or di in poetry and songs
=2 的 dī a taxi; a cab (abbr. for 的士 dīshì)
=2 的 dí really and truly
=2 的 dì (bound form) bull's-eye; target
3 母親 mǔqīn
  1. mother
  2. also pr. mǔqin

classifier: 個
4 正在 zhèngzài to be in the process of (doing sth); to be currently ...-ing
5 寫信 xiěxìn to write a letter