By the same techniques used for genetically enhancing plants, making them disease-or pest-resistant, researchers have been able to increase the amount of protein in potatoes, sweet potatoes, and tobacco.
By the same techniques used for genetically enhancing plants, making them
With the same techniques to genetically enhance plants, so that they are
Employing the same techniques used to genetically enhance plants so that they are
Employing the same techniques to genetically enhance plants, which makes them
Employing the same techniques for genetically enhancing plants that make them
题目分析:
略。
选项分析:
A选项:介词短语for genetically enhancing plants应改为不定式短语to genetically enhance plants,这点考查了不定式和ing的区别,用之于本题,used xxx是过去分词短语,其修饰先行词the same techniques,正常语序为:
X used the same techniques to genetically enhance plants.
在逻辑上,谓语动词use的约束力很强(毕竟,能否加强植物和是否用了同样的技术很有关系),因此其宾语的补足语需要用不定式的形式。
B选项:so that引导结果状语从句,但其身前并没有主句,仅是一个介词短语With the same techniques to genetically enhance plants,这是不正确的。连词so that必须连接两个句子。
C选项:Correct. 本选项在语法和逻辑上均是正确的。so that身前used是一个过去分词短语,可以近似看作same technique的定语从句。
D选项:which makes them disease-or pest-resistant是非限定性定语从句。它的先行词必须是一个单数名词。但是,本选项中其身前没有单数名词可供修饰。
E选项:介词短语for genetically enhancing plants应改为不定式短语to genetically enhance plants,错误同选项(A)。另外,that make them disease-or pest-resistant是限定性定语从句,先行词可以为the same techniques(注意,跳跃修饰现象十分常见,我们只能按照最大化语意的原则去读)。但是让植物变得更能抵抗虫害的应该是“用技术这件事”,而不仅仅是“技术”本身(单纯的有技术而不用技术,显然不能让植物抵御虫害)。
A. The present participle modifier " making them..." needs a complete clause to refer to - it would then refer to the effect of the whole clause or just to the subject of the clause. However "By the same techniques used for genetically enhancing plants" is a prepositional phrase, not a clause, and therefore the present participle "making them..." cannot refer to this prepositional phrase.
介词短语for genetically enhancing plants应改为不定式短语to genetically enhance plants;在逻辑上,谓语动词use的约束力很强
官方解析有点草率。。。
c 技术用于genetically enhance 植物(可以是所有植物)
E 技术用于(仅仅是)genetically enhancing 的植物 直接缩小了范围且逻辑上不合理,都已经genetically enhancing 的植物没必要用技术了
說一下A的錯誤: By the same techniques used for genetically enhancing plants, making them disease-or pest-resistant, researchers have been able to increase the amount of protein in potatoes, sweet potatoes, and tobacco.
第一 : underline 的句子, 感覺好像想用used for ehancing plants, making them disease-or pest-resistant and xxing xxxxx, 但沒有用and 作出ing.
第二: 歧義 making 可以是plants 簡化定語從句 : making them disease-or pest-resistant 來modify plants. 另外 可以由research 做邏輯主語 :researchers make them disease-or pest-resistant
so that引导结果状语从句,但其身前并没有主句,仅是一个介词短语With the same techniques to genetically enhance plants,这是不正确的。连词so that必须连接两个句子。
C,把伴随状语employing看成省略了主语的一个句子,后面跟的so that是因果连词,ok
E,that引导定语从句,使他们抗虫害做技术的定语, 语意逻辑上,“因为采用某种技术,所以他们可以抗虫害”比“采用某种能使他们抗虫害的技术”表达出的逻辑链更清晰。
从句意来看,DE没有used一词是不合理的,C选项除掉定语强调的是Employing the same techniques,researchers have been able to increase xxx
DE选项是:(这里的to不能省略,造成了句意上转基因植物和potatoes是一类的感觉)Employing the same techniques to genetically enhance plants,researchers have been able to increase xxx
从语法来看,E选项的that跳跃修饰容易引起歧义,D选项有主谓一致问题。
总结,做题目抓语义要从宏观角度,不要抓住C的细节,像到底是不是so that表目的的语义。
so that做状语修饰employing这个动作,“研究人员采用一个技术,因此植物抗虫病。”
E,Employing the same techniques for genetically enhancing plants,正式因为采用了技术以后,植物才变成基因增强型植物,在采用该技术前,只是普通植物。所以这里不能用for genetically enhancing plants。
这题不太懂,C 里的so that 前面一堆也不是句子啊,不就是个状语么, 怎么能用so that 呢,求解惑
想问一下 so that身前used是一个过去分词短语,可以近似看作same technique的定语从句。 这个怎么理解呢? 我的理解是employing和used意思重复了?
这题的E是不是that指代不明啊?指代techniques和plants都可以,不清楚到底指的是什么。确实很多题有考过跳跃指代,但跳跃指代往往会给出一个单复数之间的indicator吧(在这点上错过很多很多次了)
E 不定式比较好
employ和use难道不重复吗?
老师,我觉得E的that跳跃指代techniques是可以的吧。。特别是前面是一个介词短语的时候,OG里也有类似题目,具体记不清了,就是那个什么测谎仪的工作原理的那题。可能CE最主要的还是不定式和ing的区别?
E选项不可以理解为 the same techniques that make them disease-or pest-resistant吗?
D,E give you the impression that there are multiple techniques for genetically enhancing plants and that the same techniques were used in the genetic enhancement which, IMO is not the real intent., So D, E are out.
转自 https://gmatclub.com/forum/by-the-same-techniques-used-for-genetically-enhancing-91740.html
求老师指证是否正确。
连词so that必须连接两个句子。
C选项 读起来似乎冗余,Employing the same techniques (used***) to genetically enhance plants so that they are XXX:这里的used 和employ的意思重复,used不必存在。
没有吧 这两个应该不重复啊,used to xxx是technique的定语,employing 是 researchers 发出的动作,我的看法。
登录 或 注册 后可以参加讨论