彻底被gwd打败了 。
先问SC两道

Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also caused erosion and very quickly deforested whole regions.

• Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also
• Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast), which gave consumers relatively inexpensive houses and furniture, but also
• The systematic clearing of forests in the United States, creating farmland (especially in the Northeast) and giving consumers relatively inexpensive houses and furniture, but also
• The systematic clearing of forests in the United States created farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also
• The systematic clearing of forests in the United States not only created farmland (especially in the Northeast), giving consumers relatively inexpensive houses and furniture, but it

答案B，如果选B，which 是指带主句的主语吗？隔这么远在gmat里这样用可以吗？

In Scotland, the number of wild salmon have been reduced because of uncontrolled deep-sea and costal netting, by pollution, and by various other threats to the fish’s habitat.

• number of wild salmon have been reduced because of uncontrolled deep-sea and coastal netting
• number of wild salmon is reduced because deep-sea and coastal netting is not controlled
• numbers of wild salmon has been reduced because of uncontrolled deep-sea and coastal netting
• wild salmon’s numbers are reduced by deep-sea and coastal netting that is not controlled
• wild salmon’s numbers have been reduced by uncontrolled deep-sea and coastal netting

答案E，不明白这里为啥用Numbers？我感觉the number of 更好。

第一题which应该就近指代farmland吧
第二题，俺用排除法滴，前四个都有更严重的错误。
句子含有一个平行结构，by..., by..., and by...
所以排除了A, B, C。D里that is not controlled啰嗦。至于为啥是numbers，呃，没想出来。

[ 本帖最后由 portiapw 于 2008-2-23 15:00 编辑 ]

同意楼上

另外有个很牵强的对“numbers”的解释，我觉得可以这么理解。就是在S，此物种的habitats可能有多处（从对威胁的解释都by了三个平行的句子来看，也可以接受）每一个habitat里面生存的这种鱼类肯定不会是一模一样多的，这样number就有多个了。（如果把在S生存的所有该物种理解为一个整体，number才会只有一个）

第一题，答案肯定在AB，直觉……OTL（既然有not only...but also...至少看起来也要比没有的专业（好吧请不要相信这句））原句中not only...but also...两边没有对称，错，于是只能是B。至于LZ说的从句，which引导的貌似可以隔远一点，而且已经放在了but also的前面，相对已经不是很远了……

Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also caused erosion and very quickly deforested whole regions.

(A) Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also
(B) Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast), which gave consumers relatively inexpensive houses and furniture, but also
(C) The systematic clearing of forests in the United States, creating farmland (especially in the Northeast) and giving consumers relatively inexpensive houses and furniture, but also
(D) The systematic clearing of forests in the United States created farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also
(E) The systematic clearing of forests in the United States not only created farmland (especially in the Northeast), giving consumers relatively inexpensive houses and furniture, but it

答案B，如果选B，which 是指带主句的主语吗？隔这么远在gmat里这样用可以吗？

正确答案不是 B，是 D。第一，Not only 后面不可以有 but 的。第二，B 里面的 which gave consumers relatively inexpensive houses and furniture 是 create farmland 的后果，不合逻辑。如果用这个形式 A 才正确，但是要删去 but。E 不对也是因为那个 giving consumers relatively inexpensive houses 修饰不对。

In Scotland, the number of wild salmon have been reduced because of uncontrolled deep-sea and costal netting, by pollution, and by various other threats to the fish’s habitat.

(A) number of wild salmon have been reduced because of uncontrolled deep-sea and coastal netting
(B) number of wild salmon is reduced because deep-sea and coastal netting is not controlled
(C) numbers of wild salmon has been reduced because of uncontrolled deep-sea and coastal netting
(D) wild salmon’s numbers are reduced by deep-sea and coastal netting that is not controlled
(E) wild salmon’s numbers have been reduced by uncontrolled deep-sea and coastal netting

答案E，不明白这里为啥用Numbers？我感觉the number of 更好。

这里用 numbers 是因为这是今年的数目，一年比一年小，所以不是同一个数目。

这里用 numbers 是因为这是今年的数目，一年比一年小，所以不是同一个数目。

可是the number of sth had reduced...from year1 to year2，这种结构不是在GMAT里面很普遍吗？按您这样的说法岂不是都是错的？

那是从一年到第二年，不是经过几年，所以如此。

虽然我认同你对numbers的理解，每年的数目不同，所以是多个number，但是这道题里面我觉得并没有如您在解答当中所说的“今年”这个概念

说起来我自己也有点迷糊了，如果说是给了两个不连贯的年份，year1和year2，如果是说某指数（人口也好物种也好）下降（或上升），那不是可以有两种理解？一种是头尾的比较，一种是逐年比较。头尾的比较比较绝对，要么头大要么尾大，逐年的比较是不是就会存在一种趋向性的东西呢？有可能是逐渐减少，每况愈下，也有可能其中一年或几年是持平或者甚至回涨，但是头还是比尾大。这种情况岂不是连had been reducing都不能用？

貌似有点钻牛角尖了……顺便问问的

[ 本帖最后由 kichan5720 于 2008-2-24 05:52 编辑 ]

不要把语文当数学那样去理解。语言很多时候不是明确的，特别是边沿会模糊的。这句话说：In Scotland, wild salmon’s numbers have been reduced by uncontrolled deep-sea and coastal netting, . . . 。因为用了 numbers，所以知道是一段时间。在这段时间里面，鲑鱼数目的趋势是下降的。至于从一年到另一年中会不会有波浪式的变化，并不是这句话的要点，所以不必考虑。

（如果是我写这句，就绝对不会用 wild salmon's numbers。我会写成：In Scotland, the numbers of wild salmon have been reduced by . . .）

感谢各位，我理解numbers的那道题，按照asrgbf说的，如果用number后边的时态是一般现在时，这样就会有改变原句的意思的嫌疑吧

恩……有道理……因为是讨论已经发生的事情对现在的影响，完成时比一般现在时要准确。

引用:

正确答案不是 B，是 D。第一，Not only 后面不可以有 but 的。第二，B 里面的 which gave consumers relatively inexpensive houses and furniture 是 create farmland 的后果，不合逻辑。如果用这个形式 A 才正确，但是要删去 but。E 不对也是因为那个 giving consumers relatively inexpensive houses 修饰不对。

呃，这题俺又做错了
想请问一下：1.为什么not only后面不能有but？不是有个习惯搭配not only...but also...吗？
                     2.如果像A里面用not only did的话，那后面应该是and gave还是and give呢？

not only 是跟but also，但是原文的逻辑关系是前边说好处，后边说坏处，这里用转折我觉得逻辑上更加清楚。我觉得用give，听听NN意见

answer is B

the sentances begining with such "which" with a comma be4 and ends with another comma can just ignore as long as there is a verb..

second question
the question is telling the actual number of the salmon, not the numbers of salmon, which is actually saying a lot of salmon..

我和我的改稿人讨论过 not only 的问题。通常 not only 是这样用的：
Not only is he funny, he is also friendly.
一加了 but 就觉得多了一个词。

他也举了这个例：Not only have I seen a Rolls Royce, but I have also ridden in one. 这是进深的用法，不是转折的意思。

但是他认为 B 全句错误，不能用 not only 结构支撑那么长的句子。应该这样分成两句：
The systematic clearing of forests in the United States created farmland (especially in the Northeast), which gave consumers relatively inexpensive houses and furniture.  However, it caused erosion and very quickly deforested whole regions.