Question

定语从句修饰整个主句可以吗？

Thanks to the advanced technology, the crop yield has been largely increased, which has lifted more people out of poverty and starvation.

Answer 1

可以呀 which 引导的定语从句就是修饰前面那个句子的

追问

那么which引导的定语从句是不是也可以只修饰它前面的先行词呢？

追答

which 引导的定语从句既可以修饰先行词 也可以修饰整个句子

Answer 2

which前面有逗号啊，是修饰句子的，指前面整句话。没有逗号就是修饰先行词。a book which he gave to me 在这which修饰book，对book补充说明。He gave me a book，which makes me very happy.他送了我一本书，这（指的是送书这件事）让我很开心。which 指代这件事。明白了？