現在該你發球。

Now it's your serve.

Source: Tatoeba

Sentence Composition

1 現在 xiànzài now; at present; currently
2 該 gāi
  1. should
  2. ought to
  3. probably
  4. must be
  5. to deserve
  6. to owe
  7. to be sb's turn to do sth
  8. that
  9. the above-mentioned
=3 你 nǐ you (informal, as opposed to courteous 您 nín)
=3 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.)
4 發球 fāqiú
  1. (tennis etc) to serve
  2. (golf) to tee off