关于“介词+关系代词”的问题
今天在网上看到一篇《高中定语从句之“介词+关系代词”，知识点大汇总》的文章，（加粗部分为援引原文部分）
1. I bought many books yesterday, three of which are written by Lu Xun.
请问three of which are written by Lu Xun是什么成分？
2.“介词+which”在关系分句中分别可做时间、地点和原因状语，代替相应的关系副词when、where和why，如I still remember the day on which (=when )I first came to school.
请问on which I first came to school做状语成分，而不是the day的定语吗?
最佳答案 2021-06-11 08:57
1. I bought many books yesterday, three of which are written by Lu Xun.
three of which are written by Lu Xun是非限制性定语从句，three of which 是从句的主语，are written 是被动语态作从句的谓语动词，by Lu Xun 是are written 的修饰语 （状语）。
2.“介词+which”在关系分句中分别可做时间、地点和原因状语，代替相应的关系副词when、where和why，如I still remember the day on which (=when )I first came to school.
on which I first came to school 是限制性定语从句，修饰 the day 。on which (=when ) 在定语从句中作时间状语。
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