句型what changes have occurred cannot…分析

Schools remain very much what it has always been, and what changes have occurred cannot be attributed to technology.

老师好，请问主语从句what changes have occurred 中what充当什么成分？

and what changes have occurred cannot be attributed to technology.

本句中，what为融合型关系限定词，引导名词性关系分句，该从句相当于一个名词词组。其中，what changes = all the (few) changes that。

所以，and what changes have occurred cannot be attributed to technology.

= and all the few changes that have occurred cannot be attributed to technology.

曹荣禄 -

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