等到

等到

"Wait until"

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

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.

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

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.

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

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.