Pretty good.

挺好的。

I'm afraid I stayed too long.

恐怕我呆得太久了。

He really hates shopping but he goes anyway, and take his medicine like man.

他实在讨厌买东西，但还是硬着头皮去了。

He is burning the midnight oil.

他在挑灯夜读。

To get ahead you'll have to work long hours and take short vacations.

要想出人头地，你必须多工作少休假。

I don't completely agree with you, but I get the point.

我不完全同意你，但是我明白了你的意思。