You've been working hard all day and you just can't push it anymore.

你已经用功了一整天，你累得完全不想再动弹了。

I like课堂 - SpeakingMax英语口语达人

And he comes home. And he's been working with fish all day.

然后回家了。他一整天都接触鱼。

I'd better 课堂 - SpeakingMax英语口语达人

I've been working on an essay like all day though,

我为了一篇论文已经工作了一整天了，

关于学校生活 - SpeakingMax英语口语达人