On weekend, they were told to spend the money on a material purchase — a gift for themselves.

周末，他们被要求用这笔钱进行一次实质性的购物，给自己买一件礼物。

We often go fishing on weekend.

我们经常在周末去钓鱼。

I went to the movie on weekend.

我周末去看了电影。

They often play with me on weekend.

在周末他们经常和我玩。

We are eager for a rest on weekend.

我们渴望周末休息一下。