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在这个网站上看到了一个比较清楚的解释,希望对你有所帮助。http://www.beatthegmat.com/proper-usage-of-with-t45771.html
以下是她的解释:
First, just FYI, the example you ask about is in the "idiom" portion of the book, which means there isn't necessarily a distinct grammar rule for these - that's just how the language works, and we're supposed to memorize it.
Generally speaking, when you have a "with" modifier set off with a comma, the modifier is usually functioning as an adverbial modifier, which means it modifies the entire clause it is touching, and it usually provides some additional commentary about that clause.
So, in the first case, while the lions are growling, their fur is also standing on end - the "with" modifier about the fur is giving us extra info about when the lions are growling.
That's not quite what's going on in the second sentence. The meaning is more like "though the seniors compose only 25% of the student body, they get 50% of the resources." The first part is not additional information about or an example related to the main clause. Instead, it is part of a contrast being made between the two parts of the sentence.
The other problem with the "wrong" sentence is that it is ambiguous. What does "with only 25% of the student body" mean? The seniors are using 25% of the student body - maybe the freshmen? - to get 50% of the resources? Or the seniors are, themselves, 25% of the student body? |
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