what（= the thing that／the things that所……的事情）：

what we saw astonished us．相当于：

he things that we saw astonished us．

我们所看到的事使我们感到惊讶。

When she sees what you have done she will be furious¹．相当于：

When she sees the damage that you have done she will be furious．

她要是看到你造成的损坏，她会大发雷霆的。

请务必不要将关系代词what与连接关系词which混淆。记住，which必须用来指前面一个句子中的一个词或一组词。而

what不指前面的任何东西。再者，what常常是动词的宾语，

然而which则常常是动词的主语：

He said he had no money，which was not true．

他说他没有钱，这不是实话。

Some of the roads were flooded，which made our journey more difficult．

一些道路被水淹了，这给我们的旅行造成了更多的麻烦。

（参见第82节。）