Question

英语语法问题

英语语法问题Her brother snatched the letter away, at which she was furious. 她的兄弟抢走了这封信，这使她气急败坏。
这个which前为什么有个at呢，或不是其他介词呢？他在从句是什么成分额？
He is old, which fact is important. 他已经老了，这个事实很重要。
这个which是主语么？这个fcat和which什么关系啊？同位语么？

Answer 1

这里的at表示原因，at which有“为此”、“就这件事”的意思。

at which即at her brother snatched the letter away，Her brother snatched the letter away整句作介词at的宾语，而at which在后面一句里作状语。
He is old, which fact is important. 他已经老了，这个事实很重要。
这里的which是形容词，这比较罕见，意思是“而这个”、“但那个”，在这里作定语用。

Answer 2

Her brother snatched the letter away, at which she was furious.
He is old, which fact is important.错了，这是非限定定语从句，which必须作主语；
应该是，which is an important fact

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这个fact是什么成分呢？

Answer 3

1.at which是强调她的生气是“对“这件事。也可以用其他介词的，但是意思就变了。
on which she decideed to give her brother a lesson.
这里的on which指基于此事
in which she leant a lot.
指在这件事情中她学到了很多。

2.fact才是主语，which he is old是修饰主语的定语从句。
原句中的which是形容词，形容的是fact

追问

She may not be in, in which case you could leave her a note.这个in which case 又是什么结构额。。

Answer 4

be furious at