Mr.Bennet was so odd a mixture of quick parts, sarcastic humour, reserve, and caprice, that the experience of three and twenty years had been insufficient to make his wife understand his character.

我想问so odd a mixture.....odd不是形容词么？后面怎么还会有名词呢？没看明白？

还有后面那个that是怎么回事？它是从句么？什么用法？