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Kudzu, an Asian vine that has grown rampantly in the southern United States since introducing it in the 1920s to thwart soil erosion, has overrun many houses and countless acres of roadside.
that has grown rampantly in the southern United States since introducing it in the 1920s to thwart
that has grown rampantly in the southern United States, since it was introduced in the 1920s for thwarting
that has grown rampant in the southern United States since it was introduced in the 1920s to thwart
growing rampant in the southern United States since introducing it in the 1920s for thwarting
growing rampantly in the southern United States, since it was introduced in the 1920s to thwart
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grow当 变得 讲 是系动词 后面加形容词 如：grow older
当 种植或者成长 长大 讲是实义动词
同位语不可省略that，排除DE
A，introducing，这个动作应该是作被动，被引入
B,不带逗号的“since”表示时间起始点，带了逗号的“since”的功能变成了引导原因状语从句
rampant vs rampantly:
You're all correct that "rampant" is an adjective (modifies a noun), and "rampantly" is an adverb (modifies a verb). But you could actually use either an adjective or an adverb in this case.
In this case, I think "rampant" or "rampantly" could both be perfectly fine. I'll strip down the sentence a little bit for clarity:
Kudzu has grown rampant in the southern United States. --> "rampant" is an adjective, and we're just saying that the kudzu itself is rampant
Kudzu has grown rampantly in the southern United States. --> "rampantly" is an adverb, and we're just saying that the kudzu has grown in a rampant (or uncontrolled or unchecked) way
for doing :
Two key things to remember:
(1) "for" is a preposition and therefore cannot have a true verb in its prepositional phrase and
(2) any modifier (including prepositional phrases) must refer to the right item.
A pen is for writing ('for writing' tells us what a pen is used for)
I picked up the pen for writing a letter ('for writing a letter' is fine as a modifier, but it incorrectly modifies the word pen- I have five pens on my desk, but I picked up the one that I use for writing letters)
here's another attempt at explanation:
* if you use "for VERBing" to explain the purpose of an action, that purpose should be (at least somewhat) indirect.
e.g.,
(nb: a "walking foot" is a component of a sewing machine)
i bought a new walking foot for working with leather.
--> indirect purpose. i.e., the purchase itself is not directly involved with leatherworking, although the two are indirectly (though rather closely) related.
i used the new walking foot to work with leather.
--> direct purpose.
the other legitimate uses of "for VERBing" that i've seen have mostly been idiomatically connected to particular meanings. moreover, essentially all of these constructions would work the same way with nouns substituted for the "VERBing" parts.
e.g.,
Clara was paid $600 for working 20 hours of overtime.
--> this one depends on idiomatic usage: you are paid for x.
note that this construction works identically if x is a noun: clara was paid $600 for her work.
https://www.manhattanprep.com/gmat/forums/when-is-use-of-for-objectionable-why-is-it-not-here-t16521.html
If we look very literally at (C), it's saying that the vine has grown rampant in the time since it was introduced in the 1920s. That makes perfect sense, and the word "since" is a reference to time.
But as soon as we put the comma before "since" in (E), the word "since" takes on a different meaning. The phrase "since it was introduced in the 1920s to thwart soil erosion" becomes a non-essential modifier -- and it seems to be giving us an explanation. "Since" now functions as a synonym for "because": "the vine growing rampantly in the southern US, because it was introduced to thwart erosion, has overrun..."
That's not quite what we're trying to say here: the vine hasn't grown rampant because it was introduced in the 1920s to thwart erosion -- it's just become rampant in the time since the 1920s.
Nasty and subtle, no? :(
你们都在说什么呢 e的前半句不是句子 直接排除 就好像说 ：john, a boy, since he isxxxx, he xxxxxx.
前半句不是句子
你这个理解错了
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grow linking verb 加adj 表变得怎么样 结果 副词修饰了grow这个动作不对
C since修饰的是从句 grow是核心词，E since修饰的主句，overrun核心词
①不带逗号的“since”表示时间起始点，带了逗号的“since”的功能变成了引导原因状语从句
②grow当 变得 讲 是系动词 后面加形容词 如：grow older
③since出现尽量体现出完成时态
introduce是被动的，不应用主动。
grow当 变得 讲 是系动词 后面加形容词 如：grow older
当 种植或者成长 长大 讲是实义动词。
所以加形容词，rampant疯长的；
不带逗号的“since”表示时间起始点，带了逗号的“since”的功能变成了引导原因状语从句。
thwart阻碍；
A选项：introducing有问题，因为an Asian vine 应该是被人引入，而选项用现在分词表示自己引进；
B选项：introduced to thwart, not for thwarting
D选项： introducing it 。。。 for 不合语法；
E选项：since it was introduced副词短语而E中的since 前被逗号隔开直接修饰了 has overrun many houses and countless acres of roadside.不带逗号的“since”表示时间起始点，带了逗号的“since”的功能变成了引导原因状语从句。
选项C rampant 如何修饰动词
A D introducing 可以排除
而个人认为CE的主要区别是 since 修饰的动词是不同的。
C中 since 这句话修饰的是that has grown rampant in the southern United States 因为后面有逗号隔开，就近修饰原则
而E中的since 前被逗号隔开直接修饰了 has overrun many houses and countless acres of roadside.
在B中since 这句前后都有逗号，我不确定，但是我认为如果当做插入语即状语位置可以移动这一特点的话，这个也是修饰主句谓语部分的。且 这里很容易判断出用 to do 也是可以pass 掉的
但是在逻辑上 它在...时候被引入应该是修饰它疯长的。所以选择C。
s(since,it,to)+v+o
vine 藤本植物 rampantly 粗暴的
感觉since从句实际修饰的是has grown rampant那句
CE
请问E的问题是什么，看OG上的解释，说因为ince it was introduced in the 1920s与被修饰对象 has grown rampant 隔开了，但C也是隔开了呀，只是E多了一个逗号而已。很不明白，请大牛们帮忙解释一下，谢谢~~~~
个人意见：
不带逗号的“since”表示时间起始点，带了逗号的“since”的功能变成了引导原因状语从句。
谢谢啊～
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纠结了好久，最后败给了grow做系动词后面可以接形容词
grow当 变得 讲 是系动词 后面加形容词 如：grow older
当 种植或者成长 长大 讲是实义动词
同学，可以请问一下E哪里错了吗，如果grow当成动词，rampantly副词修饰，句意和语法上面也是没有问题的呢
E错在有了个逗号后，逻辑关系不明确了。
你好，为什么加了一个逗号逻辑不明确呢？谢谢~~~
请问E的问题是什么，看OG上的解释，说因为ince it was introduced in the 1920s与被修饰对象 has grown rampant 隔开了，但C也是隔开了呀，只是E多了一个逗号而已。很不明白，请大牛们帮忙解释一下，谢谢~~~~
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猖獗表示结果，修饰整个动词带来的后果。类比die happy，cry sad。
和楼上同疑惑，除非grow做系动词用。
和同上同疑惑。除非grow做系动词用。
选项C rampant 如何修饰动词？