新年好！OG12版SC第六题解释看不懂。请帮忙指教！

gerlina

首先我想问一下非限制性定语从句的which到底应该怎么用，修饰的是前一句的什么，是不是就近修饰？感觉定语从句一直比较模糊，高中时候应付了考试现在把握不准了。
其次是解释C中说的them 似乎指代的是tourists，为啥子，我理解不了。为啥E选项的them就指代的是chambers了。
谢谢高人指点！
6.In late 1997, the chambers inside the pyramid of the Pharaoh Menkaure at Giza were closed to visitors for cleaning and repair （due to moisture exhaled by tourists, which raised its humidity to such levels so that salt from the stone was crystallizing） and fungus was growing on the walls.括号内为下划线部分
(A) due to moisture exhaled by tourists, which raised its humidity to such levels so that salt from the stone was crystallizing
(B) due to moisture that tourists had exhaled, thereby raising its humidity to such levels that salt from the stone would crystallize
(C) because tourists were exhaling moisture, which had raised the humidity within them to levels such that salt from the stone would crystallize
(E) because of moisture that was exhaled by tourists raising the humidity within them to levels so high as to make the salt from the stone crystallize
(F) because moisture exhaled by tourists had raised the humidity within them to such levels that salt from the stone was crystallizing

解释
Agreement; Parallelism
The plural subject chambers requires plural pronouns. The sentence explains a causal sequence: visitors' breath introduced moisture that caused salt to crystallize, which caused the chambers to be closed for cleaning and repair. The phrase due to
makes this causal sequence somewhat ambiguous, seeming to suggest that the repairs were due to humidity from visitors' breath.
A    Due to is an imprecise expression of the
causal connection between the tourists'
breath and the closing of the museum for
cleaning; the singular pronoun its does not
agree with the plural antecedent chambers.
B     It is not at all clear what the reference is for
the pronoun its; fungus was growing should
be parallel to salt... was crystallizing (not
would crystallize) because it is another effect
of the humidity.
C    The pronoun them seems to refer to tourists,
which is nonsensical; the entire construction
is awkward and wordy; would crystallize is
not parallel to was growing.
D Once again, them seems to refer to tourists;
the entire construction is awkward, wordy,
and ambiguous; crystallize is not parallel to
was growing.
E    Correct. The causal sequence is clear, and
them clearly refers to chambers.
The correct answer is E.

gerlina

自己沙发先。。在线专注的等。。。

babybearmm

关于系统语法知识的问题，建议forget about高中语法，看manhattan吧，那是GMAT语法。上面很详细地讲了，一般说来就近修饰，但是有特殊......（直接看书好了）
可以搜索版上nn关于”跳跃修饰“的整理

你问的这道题
http://www.beatthegmat.com/one-pronoun-so-many-antecedents-t60540.html


我觉得bottomline，修饰是否有歧义的问题，并不是绝对的。GMAT也没给出什么放之四海皆准的真理，或者说一个条条框框你可以记住然后套用的。GMAT总是强调句意、逻辑。

贴一下我摘录的Ron@Manhattan GMAT说的话
the rules on ambiguous pronouns are NOT absolute.

there are only two ABSOLUTE RULES for pronouns:
(1) the pronoun must stand for a noun that is actually PRESENT in the sentence;
(2) the pronoun and the noun must MATCH IN TERMS OF SINGULAR/PLURAL.

the other "rules", such as those that govern ambiguity of pronouns,are more like "guidelines" or "suggestions".
therefore, you should leave those criteria for last - i.e., until afteryou've narrowed down the choices based on all other criteria that you can find.
in general, we've found:
the gmat will tolerate pronoun ambiguity when both of the following aresatisfied:
1. the intended referent makes much more sense than do the other possiblereferents,
and
2. the intended referent is PARALLEL TO THE PRONOUN, and the other possiblereferents are NOT parallel to the pronoun.

gerlina

谢谢哦！！！超级感谢

12604698

好像lz还有个疑问~~我插个楼~

lz也注意到了这道题代词问题。。

e选项：exhaled by tourists  算一个插入成分，和句子主干不是一个层次内。。。插入成分去掉不影响句子的理解。。因此找them时可以跳过插入成分向前找。

c 很正常的一个定语从句。 从句中的代词，可以指代主句中的单词。

which 我也推荐manhattan语法书中的跳跃修饰那部分。。应该是后面高阶技巧里的修饰那章的。。。可能哈，手头没资料~

12604698

哦，which不能修饰前面整个句子。。这点那章没提，我顺便说下~

gerlina

哦，which不能修饰前面整个句子。。这点那章没提，我顺便说下~

-- by 会员 12604698 (2012/1/26 22:58:13)

wow是你呀，我前面看过你的帖子，感觉超励志呢。觉得你的方法也很好。我正在准备二战，哈哈能得到你的回复感觉好开心呀。

12604698

哦，which不能修饰前面整个句子。。这点那章没提，我顺便说下~

-- by 会员 12604698 (2012/1/26 22:58:13)

wow是你呀，我前面看过你的帖子，感觉超励志呢。觉得你的方法也很好。我正在准备二战，哈哈能得到你的回复感觉好开心呀。

-- by 会员 gerlina (2012/1/27 0:09:38)

嘿嘿~我看到你回复我的帖子了。。估计在那个帖子里回复你你也看不到。

这道题就是我刷og的时候刷到的很经典的一道代词题~ 凑几个这样的代词题，代词基本就没问题了~你也加油哈！~！

babybearmm

这点Manhattan强调了哦

哦，which不能修饰前面整个句子。。这点那章没提，我顺便说下~

-- by 会员 12604698 (2012/1/26 22:58:13)