代词能指代句子吗？
E is best. 这里it指what。这题的依据主要是平行，其它四个选项都不如E好。
C 虽不错，但没有 E 简明 , 且被动不如主动。
what patients eat 和 when they eat it 在此 都是名词性从句
what patients eat 相当于 food; when they eat it 相当于 time
it 指代 名词性从句 what patients eat
E的 it 不能省，eat及物
not only by what patients eat but also by when they eat it= not only by the food that patients eat but also by the time at which they eat it
这是我翻出的大全简注；觉得有问题，还有A错在什么地方。
各位过去、现在、未来的NN们，进来讨论一下吧，刚才居然读到一位前辈说which指代整个句子的例子。
再比如，LZM说过which指代前面的的一句话所错的。
但是大家又没有注意到OG 119。 Which就是指代前面的2句话的意思。为什么他是正确的呢？因为只有这个答案准确的反映了句子的意思，简洁，而且不会产生歧义。
119. Executives and federal officials say that the use of crack and cocaine is growing rapidly among workers, significantly compounding the effects of drug and alcohol abuse, which already are a cost to business of more than $100 billion a year.
(B) significantly compounding the effects of drug and alcohol abuse, which already cost business
NN们都不屑于讨论吗？再顶一次！
A的错误：not only by+名词，but also by+从句。
E正确因为绝对平行。
我认为c中time前是否应有："the"
抱歉没看到你后面og119的帖子。我答复的是A-7
effects cost?好像逻辑不对。觉得也是指代全句
A的错误：not only by+名词，but also by+从句。
E正确因为绝对平行。
不能因为平行就选定答案；OG204就是最好的例子。
如果E中的it指代有问题，E的语法错误就很严重，必须排除；
A中并没有语法错误，只是形式上不对称，偶认为这题应该选A，希望大家能找出新的论据。
请问Leeon: 在哪能找到大全简注?
关于119我同意leeon看法.
这道题我当时也选了A, 因为弄不懂E中的it. 过后觉着从逻辑上说E最好, 可还是弄不懂it, it 是不能指代句子的, 大家可看老og-44-7中it 的解释.
It 到底指代谁?
弱弱地问一句，AB中的them会不会指代不清呢？
When从句是时间状语从句. why can it used after "by" as noun?
Any NN? Help!
When从句是时间状语从句. why can it used after "by" as noun?
Any NN? Help!
Dental caries and gingivitis can be exacerbated not only by the foods patients eat but also by when the patients eat them.
(A) not only by the foods patients eat but also by when the patients eat them
(E) not only by what patients eat but also by when they eat it
A and E both use " by when", so it shouldn't be a reason to rule out A.
Also in A, "them" unambiguously refers to "foods".
But in E, there is no reference to "it", which might be "the food". how can a pronoun refers to a noun that doesn't appear on the sentence?
Why E is correct but A is not?
A的错误：not only by+名词，but also by+从句。
E正确因为绝对平行。
我认为c中time前是否应有："the"
不能因为平行就选定答案；OG204就是最好的例子。
如果E中的it指代有问题，E的语法错误就很严重，必须排除；
A中并没有语法错误，只是形式上不对称，偶认为这题应该选A，希望大家能找出新的论据
OG204. In recent years cattle breeders have increasingly used crossbreeding, in part that their steers should acquire certain characteristics and partly because crossbreeding is said to provide hybrid vigor.
E. partly to acquire certain characteristics in their steers
Any more comments?
A的错误：not only by+名词，but also by+从句。
E正确因为绝对平行。
我认为c中time前是否应有："the"
When从句是时间状语从句. why can it used after "by" as noun?
Any NN? Help!
本来觉得没什么，选的是E。
一看讨论，反而
大家是不是对指代过于敏感了？
OG204. In recent years cattle breeders have increasingly used crossbreeding, in part that their steers should acquire certain characteristics and partly because crossbreeding is said to provide hybrid vigor.
E. partly to acquire certain characteristics in their steers
是否可以这么说：逻辑意思〉平行〉指代？
My first impression - A and E appear gramatically wrong - "by" is the prep, which should be followed by a noun or the like. Yet "when..." is really not suitable to be after a prep. That's why I mistakenly take C.
But the answer is between A and E, suggesting my initital impression is entirely wrong. I would prefer A as "it" is really vague in E.
我开始选的C，就是因为E中的it才把E排除的。
it能不能指代句子呢？
GMAT的语法是有优先级的,矮子里面挑将军
同意30楼MM对OG204的说法,
A的错误：not only by+名词，but also by+从句。
E正确因为绝对平行。
有争议的题目很多阿，当然似乎选相对比较正确的排出严重错误的。同一以上的观点！
另外119题 which 前有逗号，是非限定性定语从句，我认为可以跨越指代的，也可以指代整句。
请问楼上的牛牛，什么地方可以找到大全的注解阿？我看讨论，眼睛都花了，有可以打印的注解么，还有一个月要考了，急啊！能给个下载链接么，或者发我一份吧xueyida(A) hotmail.com
a 我觉得是不对称，not only by+n but also by +句子
请问楼上的牛牛，什么地方可以找到大全的注解阿？我看讨论，眼睛都花了，有可以打印的注解么，还有一个月要考了，急啊！能给个下载链接么，或者发我一份吧xueyida(A) hotmail.com
a 我觉得是不对称，not only by+n but also by +句子
我也觉得it指代what
而且我读第一篇时，感觉it指代很清楚，呵呵
大全的注解: http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=218747&replyID=&skin=1
觉得还是比较清楚的，大家没必要钻牛角尖啊。相比严谨的对称结构而言，我觉得it指代的问题还是微不足道的，而且这里it指代what也不是完全有失原则的。同意E，因为GMAC对于句法结构的要求
拙见。。。
同意楼上的，a的结构问题显然更大，by a noun, by when，一个接名词，一个接状语从句，不符合平行对称的原则；
个人觉得，E并没有问题。结构上来看，前后皆状语从句，没问题；后面when引导从句，eat后面是必须要有一个宾语的，上下文理解来看，这个宾语就是前面的what, 此处以it代之，没有问题。
另外，题干里面的them可能会有误导，如果题干改写成not only by the foods that the patients eat but also by the time when the paitiens eat them, 形式上更对称了一些，但繁琐，进一步改写成not only by what the patients eat but also by when they eat it, 即，them的被指代词变成了what, 那么指代词显然应该变成it了。所以就是e了。
仅供参考
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