“你什么时候回来？”“这都要看天气。”

"When will you be back?" "It all depends on the weather."

"When will you come back?" "It all depends on the weather."

Source: Tatoeba

Sentence Composition

=1 你 nǐ you (informal, as opposed to courteous 您 nín)
=1 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.)
2 什么时候 shénmeshíhou when?; at what time?
=3 回来 huílai to return; to come back
=3 回来 huílái
  1. (to come or bring) back (used after a verb to indicate direction towards the speaker)
  2. back (used after a verb to indicate direction towards the speaker)
  3. to return; to come back; to be back
=4 这 zhè
  1. (pronoun) this; these
  2. (bound form) this; the (followed by a noun)
  3. (bound form) this; these (followed by a classifier) (in this sense, commonly pr. zhèi, esp. in Beijing)
=4 这 zhèi (coll.) this
=5 都 Dū surname Du
=5 都 dōu
  1. all; both; entirely
  2. (used for emphasis) even
  3. already
  4. (not) at all
=5 都 dū
  1. capital city
  2. metropolis
6 要看 yàokàn (it) depends on ...
7 天气 tiānqì weather