等到

In a sentence

• 等到阳光洒满大地，我们就开始野餐。

  When the sunlight covers the earth, we'll start the picnic.

  Here, '等到' is used to indicate waiting until a specific time or condition is met.

• 等到冬天来临时，许多鸟儿会飞到温暖的地方。

  When winter arrives, many birds will fly to warmer places.

  In this sentence, '等到' sets the temporal point of an event occurring as when winter arrives.

• 等到你完成作业，我们再去看电影。

  Once you finish your homework, we'll go watch a movie.

  '等到' here creates the condition that the film outing depends on the completion of homework.