我终于完成了作业。

I finally finished my homework.

他们终于找到了失踪的宠物。

They finally found the lost pet.

经过长时间的努力，她终于成功了。

After a long time of effort, she finally succeeded.

我们终于到了电影院。

We finally arrived at the cinema.

食物终于到了，我们可以开始吃饭了。

The food finally arrived, and we can start eating.

这些句子简单易懂，适合二年级学生使用。希望这些例子对你有所帮助!