prep-1-130新问题，请教NN~~

mouxiaolan · 发表于 2014-4-23 22:31:02

Industrialization and modern methods ofinsect control have improved the standard of living around the globe while at the same time they have introduced some 100,000 dangerous chemicalpollutants, having gone virtually unregulated since they were developedmore than 50 years ago.

A. while at the same time they haveintroduced some 100,000 dangerous chemical pollutants, having

B. while at the same time introducing some100,000 dangerous chemical pollutants that have

C. while they have introduced some 100,000dangerous chemical pollutants at the same time, which have

D. but introducing some 100,000 dangerouschemical pollutants at the same time that have

E. but at the same time introducing some100,000 dangerous chemical pollutant, having

答案是B，其他选项的错误我都明白，但是关于正确选项B有点疑问
大家对B的理解就是省略句：从句主语和主句主语一致时，可以省略从句中的主语和be动词。
问题是，如果把从句补全的话，就变成了while ( industrialization and modern methods of insect control ) ARE introducing some....
主句的have improved 和从句的are introducing明显不匹配吧，而且主从句的时态导致整个句子逻辑都有问题了呀
还望大牛解答一下~~~

mouxiaolan · 发表于 2014-4-23 22:59:24

木有人回答嘛~~~~

kiwifoodtown · 发表于 2014-4-24 08:43:21

LZ，我是这么理解的，对于introducing 可以不用认为它是省略，而可以把它看成是状语，这样对于主语来说，introducing是主动形式。这样是不和have improved冲突的。

boalgmat · 发表于 2014-4-24 11:40:09

while在这里引导状语从句，while在表示对比概念的时候两个事情是同时发生的（曼哈顿有讲）所以这里不是省略是状语句子结构式：主语+have done while doing....

marjoriee · 发表于 2014-4-24 18:44:30

LZ这是状语从句的省略，推荐看下prep-1#206，一样类型的，就可以理解的
加油

mouxiaolan · 发表于 2014-4-25 10:07:30

marjoriee 发表于 2014-4-24 18:44
LZ这是状语从句的省略，推荐看下prep-1#206，一样类型的，就可以理解的
加油 ...

你说的那道题是这样的
While studying the genetic makeup of corn, a new class of mutant genes was discovered by Barbara McClintock, a discovery which led to greater understanding of cell differentiation.
正确答案是 D. Barbara McClintock discovered a new class of mutant genes, a discovery that led
但是把这个句子补全了之后可以是 while BM WAS studying the genetic makeup of corn, a new class of...
补全之后的句子是没有问题的

但是我说的那道题，补全了之后就变成了while ( industrialization and modern methods of insect control ) ARE introducing some....
可以用while (in&modern methods) are introducing..., they have improved...吗

mouxiaolan · 发表于 2014-4-25 10:10:59

kiwifoodtown 发表于 2014-4-24 08:43
LZ，我是这么理解的，对于introducing 可以不用认为它是省略，而可以把它看成是状语，这样对于主语来说，in ...

所以这里的while状语从句不是省略句从句不能补全成while STH be doing？

mouxiaolan · 发表于 2014-4-25 10:13:59

mouxiaolan 发表于 2014-4-23 22:59
木有人回答嘛~~~~

因为题干中有while那肯定是引导的从句吧？然后这个是状语从句也没有问题。
既然又回到了while引导的状语从句，那不还是省略吗。。。。
还是不太明白

marjoriee · 发表于 2014-4-25 22:31:15

LZ理解的状语从句的省略，和偶理解的不一样
你说的问题
while at the same time introducing some 100,000 dangerous chemical pollutants.
其中的introducing中的ing不是进行时态，要把它理解成主动的语态，-ed是被动的语态
while Industrialization and modern methods ofinsect control have introduced....

[SC悬赏令] prep-1-130新问题，请教NN~~

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