which作为关系限定词只能引导非限制性定语从句吗？为什么让步状语从句也可以？
1.These microbes enable the soil to have more Nitrogen, which plants need to live.
which 为关系限定词，引导非限制性定语从句。
2.her definition will court special risks whichever side of the issue it favors.
3.You will get into trouble whichever way you choose.
第二句和第三句是no matter which的改写的让步句，如果还原句子，例如：
Her definition will court special risks no matter which side of the issue it favors.
You will get into trouble no matter which way you choose.
这里的which为什么依然是限定词？
另外，
They have decided to build a new hospital in this area, whatever difficulties they might have.
这句话中whatever怎么也成了限定词了，为什么它后面跟着的是difficulties这个名词？
最佳答案 2022-04-03 06:59
1.These microbes enable the soil to have more Nitrogen, which plants need to live.
这是定语从句。which是关系代词指代Nitrogen，作need的宾语，plants是主语。which不是关系限定词。注意关系词which没有疑问含义。
2.her definition will court special risks whichever side of the issue it favors.
3.You will get into trouble whichever way you choose.
4.They have decided to build a new hospital in this area, whatever difficulties they might have.
这三个句子中的whichever，whatever都不是关系限定词，它们都有明显的疑问含义“哪个、哪些”，“什么”，虽然它们是限定词，限定名词，但不是关系限定词，而是疑问限定词。wh-ever型疑问词可以引导让步状语从句，也可以引导名词性关系分句。引导让步状语从句时，可以用no matter wh-词替换。
你混淆了让步状语从句和名词性关系分句。二者的区别是，名词性关系分句要在主句中作一个名词性成分。而让步状语从句的主句主谓宾成分齐全，不缺名词性成分，wh-ever词引导的是状语从句。例如：
You can take whichever book you like. = You can take any book that you like. 名词性关系分句作take的宾语。Whichever是任何的意思，而不是哪个的意思。
You will get into trouble whichever way you choose. = You will get into trouble no matter which way you choose. whichever引导的是让步状语从句。Whichever的含有疑问意义，无论哪个。让步状语从句可以移至句首：
Whichever way you choose, you will get into trouble.
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