"终于等到你"在英文中可以说为"I have finally waited for you"。这个表达的来源可能源于人们对某人经过很长时间的等待后终于见到了他们所期待的人表示的高兴。

下面是一些关于这个表达的例句：

I have finally waited for you for so long, and now you are here. 终于等到你了，你终于来了。

I can't believe I have finally waited for you. 我真的不敢相信我终于等到你了。

I have been waiting for this moment for so long, and now you are here. 我已经等待这一刻很久了，现在你终于来了。