He was depressed by what he had gone through.
He was depressed by what he had known.
1. 我看到曹老师解答的时候提到what在这种结构中引导的是名词性从句,但没有说是什么类型的名词性从句,请问老师是什么类型的名词性从句呢?之前有老师把第一句分析为“宾语从句”,这种说法对吗?
2. by的词性是介词吗?by what he had known作什么成分呢?
1. 问题句的这种结构可以称为名词性结构,相当于the thing that...不当作从句理解。
2. 问题句为被动语态,by 当然是介词,by 引导的部分作方式状语。《薄冰高级英语语法》是这样解释的。
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1.He was depressed by what he had gone through. “by what he had gone through”作此句的方式状语从句,"by"后面的“what he had gone through”其实是原来的主语,作用相当于一个名词。
2.是,“by what he had known”作此句方式状语从句。