She knows nothing but eating还是She knows nothing but eat

我觉得这里是介词，而非表转折的连词

这里的but作介词，常与nothing, nobody, who, all等连用，意为“除……之外”。如：
No one but me saw him. 除了我之外，没人看到他。

She knows nothing but eating~

这个其实很简单~

省略句~只要还原成2个简单句就可以了哦~

She knows nothing, but she knows eating~

这里nothing做knows的宾语~所以后边的也要做宾语的名词~

然~eat是动词~所以不能跟knows搭配~所以用eating~动名词哦~

简单吧~以后这样的题就这样还原做~！！

She knows nothing but how to eat.