他们的合同在这个月底到期。

Their contract is to run out at the end of this month.

Source: Tatoeba

Sentence Composition

1 他们 tāmen they; them
=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 合同 hétong contract; agreement

classifier: 份
=3 合同 hétóng
  1. (mathematics) congruence (chiefly of matrix)
  2. (military) combined, united, joined
  3. combined, united, joined
  4. congruence (chiefly of matrix)
  5. contract; agreement (Classifier: 份 m)
4 在 zài
  1. to exist; to be alive
  2. (of sb or sth) to be (located) at
  3. (used before a verb to indicate an action in progress)
5 这个 zhège
  1. (pronoun) this
  2. (adjective) this
6 月底 yuèdǐ end of the month
7 到期 dàoqī
  1. to fall due (loan etc)
  2. to expire (visa etc)
  3. to mature (investment bond etc)