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sunyuwei 发表于 2014-9-18 20:07 ![]()
我只是想把which修饰这个知识点彻底搞明白 不想没搞明白到时候又被打击到
如果我把called 那部分当做插 ...
楼下那位亲的话很在理。
然后
I can see what you're saying here, but nouns that are modified by prepositional phrases can still be the referent of 'which' even if they are a few words distant from it.
This usually happens when the immediately preceding noun is grammatically incompatible with the verb after "which".
For example: "The picture of my brothers, which was taken last year in Mexico, is one of my favorites."
You might object to this sentence on the grounds that 'which' might be taken to modify 'brothers'. And, in a strict sort of way, you'd be right. But here's the catch: There's really no other reasonable way to write this sentence. You just can't get 'picture' next to the 'which' clause without creating total nonsense, or splitting the sentence into 2 smaller sentence-ettes.
plus, 'brothers' is plural, and is incompatible with 'which WAS'.
This is an interesting point, though, and subtle at that. I believe that we are working on getting it into our forthcoming strategy guide.
The difference is in the placement of the various phrases.
A: "(opening modifier), (noun) (modified by necessary descriptive phrase), which" - in this structure, which refers to the noun. Note that the few words right after "technique" are simply the name of that technique. These words ("technique called proton-induced X-ray emission") collectively make up the extended noun phrase to which "which" refers. The single-word noun is technique but the other words are necessary to understand what technique we're talking about.
C: "(Noun) (modifier), (modifer), which" - in this structure, we've separated what had been the necessary descriptive phrase from the noun, so it is no longer a part of any extended noun phrase. As a result, the "which" in this case really does only apply to "emission" rather than to a "technique called emission" b/c "a technique called emission" as a simple noun phrase, is no longer part of the sentence.
这是instructor~~的解答~~~希望能给你一点clarity~~
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