but 与 except两者都可表示“除…外不再有…”，但含义上略有差别：but侧重指意义的几乎完整性，而 except 则侧重指后面除去的部分。

I had nothing on except for my socks.

我除了短袜什么都没穿。

I didn't tell him anything except that I needed the money.

我什么都没告诉他，只是说我需要钱。

We got there early but Mike had already left.

我们及早到了那里，但是迈克已经离开了。

I know you don't like her but try not to make it so obvious.

我明白你不喜欢她，但是尽量别表露得那么明显。