比较句型中，than的词性和成分应该如何分析？

This meat is better than what we had last week.

This meat is better than we had last week.

书上说以上2句含义没有区别。

1）为什么没有区别？

2）第一句中有what, than应该分析成什么词性和成分？第二句中than又该如何分析than词性和成分？2句中的than是否不一样？

期待老师精彩讲解！

谢谢！

1. This meat is better than what we had last week.

= This meat is better than what we had last week was.

这句话很好，没有任何问题。

2. This meat is better than we had last week.

这句话似乎有问题。这是“同类比较项” 出了问题。

在 than we had last week 中，than 是 had 的宾语，than 相当于 meat 的作用，主句的比较项是形容词 better，它们不是同一个类别。

如果改为：They had more meat than we had last week. 就可以。

刘永科 - 教育出版集团英语总顾问 & 英语系列图书主编

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