《GMAT语法改错精解》一道题The speculative fever of the Roaring Twenties infected rich and poor alike; great numbers of people were dangerously overextended themselves, credit was absurdly easy to obtain, and most brokerage houses required only ten percent of cash for stocks bought on "margin".
[I]解释：[/I]相当于I said so myself...用来强调 主要是强调，也有具体说明overextended 动作执行的意味。
gamtcat光盘14/2114.21. A proposal has been made to trim the horns from rhinoceroses to discourage poachers; the question is whether tourists will continue to visit game parks and see rhinoceroses after their horns are trimmed.
(A) whether tourists will continue to visit game parks and see rhinoceroses after their horns are
(B) whether tourists will continue to visit game parks to see one once their horns
(C) whether tourists will continue to visit game parks to see rhinoceroses once the animals'horns have been
(D) if tourists will continue to visit game parks and see rhinoceroses once the animals' horns are
(E) if tourists will continue to visit game parks to see one after the animals' horns have been
[I]解释：[/I]once表示曾经，大多数情况下是用完成时的，一个标志另外你所说的那个也对，to see是visit的目的 for example: I will help you once but then you must do it by yourself.
[C] gamtcat光盘8/25[讨论]8.25. Like many self-taught artists, Perle Hessing did not begin to paint until she was well into middle age. (A) Like (B) As have (C) Just as with (D) Just like (E) As did
[I]解释：[/I]E: error because ambiguous + two clause as是连词，要跟句子的而like不可以接句子的如果用as did,表达的是肯定的意思,而主句是did not,这样会改变句子原来的意思.句子的本意应该是:和其他人一样不... as did 的形式是句子，但前后的比较中应该用同样的形式：肯定--肯定；否定---否定 如果要用AS DID应该后置，DID代替实意动词BEGIN，而不是其他的。要是用AS，可以把DID去掉。要用AS DID， 可以改为Many self-taught artists, Perle Hessing did not begin to paint until she was well into middle age as many self-taught artists did.
[I]gamtcat光盘16/9，[/I] 219. Studyies show that young people with higher-than-average blood pressure and their families have a history of high blood pressure are more likely than others to develop a severe form of the condition.
正确答案：whose families have a history of high blood pressure.为什么A不对，不够简洁吗？ 解释：整个题目讲的是young people 的问题。而A 用and连接，表明了两个问题：1）young people are more likely than 2）their families are more likely than 若这样的话，在逻辑上是不对的。 21 Most teen-agers who work for pay hold jobs that requir few skills,(carry litte responsiblity,and offer no hope for career advancement).上面已是正确答案，但想问一下：如果改成that requir few skills, litte responsibility and no hope for carreer advacement可以吗？解释：21实际是平行结构的问题，理论上你所提及的两种结构都是成立的，即1.that 动宾结构1，动宾结构2，and 动宾结构3。 2.that 动词 + 宾语1，宾语2，and宾语3。关键是看动词与宾语的搭配，即动词是修饰几个宾语。
official guide 语法第218题 Despite protest from some waste-dispoal companies, state health officials have orderd that the levels of bacteria in seawater at popular beaches be mesured and the results published. 为什么最后是...the result published而不是the result BE published? 连起来的意思难道是 "have ordered..the results"命令了结果？如果是results be published的解释比较好接受--在我看来：命令公布结果。
[I]解释：[/I]应该是省略了be。由于都是被动的，所以意思应该是：将这些结果公布。
OG No.49 49. The cameras of the Voyager II spacecraft detected six small, previously unseen moons circling Uranus, (which doubles to twelve the number of satellites now known as orbiting) the distant planet
A:which doubles to twelve the number of satellites now known as orbiting
B:doubling to twelve the number of satellites now known to orbit
C:which doubles to twelve the number of satellites now known in orbit around
D:doubling to twelve the number of satellites now known as orbiting
E:which doubles to twelve the number of satellites now known that orbit
why the answer is B ？ previously unseen moons circling Uranus, 在这里做插入语。which的指代不明，所以A，C，E错。B和D中,be known as 意味被...有名; be known to以为被....所熟知。所以，根据原文上下就知意思不同。
og 96 & 85The national Transportation Safety Board has recommended the use of fail-safe mechanisms on airliner cargo door latches to assure that the doors are properly closed before takeoff and to prevent them from popping open in flight. 画线部分是正确的答案。但是答案D是to assure closing the doors properly.为什么就不对呢？
OG96解释：assure这个词是使相信（cause sb to be sure）的意思，一般用assure (sb) that或assure sb of sth/doing sth,选项to assure closing the doors properly不符合assure的用法，如果改成ensure倒可以考虑，所以应用to assure that the doors are properly closed .
85. Out of American's fascination with all things antique has grown a market for bygone styles of furniture and fixtures that is bringing back the chaise lounge, the overstuffed sofa, and the claw-footed bathtub.根据他的解释，has grown必须和market保持一致。所以不能用have grown，为什么？
G85解释：倒装句，主语是a market,所以谓语应用has.正常语序应为 A market has grown out of American's fascination with all things antique .
请教一道关于比较的题og80Og 80: Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Mile delta and the river valleys of the Tigris and Euphrates. [I]解释：[/I]在省略后不引起句子发生歧义的前提下，可以省略。若不加，会导致句意改变，则要加。OG 中有一题是比较小麦和大米的蛋白含量的，其中的动词不补出，就导致句子的含义变成：小麦含有大米。
请教一道OG SC的题： 121题： Chinese, the most ancient of living writing systems, consists of tens of thousands of ideographic characters, each character a miniature calligraphic composition inside its own square frame.请问： “each character a miniature calligraphic composition inside its own square frame” 在此句话中作什么成分？（是同位语吗？） 怎么没有谓语动词呀？ 是不是省略了？ [I] 解释：[/I]同位语。要有动词，就错了。因为句子就变成逗号隔开两个独立的句子。
[I]新东方补充材料[/I] 236Unlike other arachnids, which have their nerve cells evenly distrbuted along their bodies, the scorption's nerve cells are clustered in its head, like a mammal's.
A. bodies, the scorption's nerve cells are clustered in its head, like a mammal's.
B. bodies, the scorption's head had a cluster of nerve cells, as a mammal does.
C. body, the scorptions has a cluster of nerve cells in its head, as a mammal does
D. body, nerve cells are clustered in the scorption's head, like a mammal's
E. body, a cluster of nerve cells is in the scorpion's head, like a mammal's
C为何正确？ 解释： A:like是介词,后面不能跟句子. B:改变句子的意思. C:正确用法,AS其后助动词补出. D\E:同A:用的是LIKE.
243 . Although the coordination of monetary policy can help facilitate the orderly financing of existing imbalances,it is unlikely that its effect on their size is significant in the absence of an appropriate fiscal adjustment.
A. it is unlikely that its effect on their size is significant
B. it is unlikely that the size of their effect would be significant
C. affecting their sizes are not likely to be significant
D. the significance of their effect on its size is unlikely
E. the effect on their size is not likely to be significant
A的错误是不够简洁吗？解释： A:.指代不明确.且罗嗦一大堆!不知所云。
257In the face of widespread concern about environmental waste, compact disc manufacturers are attempting to find a replacement for the disposable plastic box in which they package their product.
A. the disposable plastic box in which they
B. the disposable plastic box where they
C. a disposable plastic box in which to
D. disposable plastic boxes inside which they
E. the disposable plastic boxes in which to
A为何错？解释: A?正确答案!they 代表前disposable plastic box de say!
265. Research during the past several decades on the nature of language and the processes that produce and make it understandable has revealed great complexity instead of underlying simplicity.
A. that produce and make it understandable has revealed great complexity instead of underlying simplicity
B. of producing and understanding it have revealed not underlying simplicity but great complexity
C. by which it is produced and understood has revealed not underlying simplicity but great complexity
D. by which it is produced and understood have revealed great complexity rather than underlying simplicity
E. by which one produces and understands it have revealed great complexity instead of underlying simplicity
C为何错？原句应如何理解？解释: A is correct! 这个句子应该这样来看:Research ( during the past several decades on the nature of language and the processes ) that produce and make it understandable has revealed great complexity instead of underlying simplicity.
270 The Olympic Games helped to keep peace among the pugancious states of the Greek world in that sacred truce was proclaimed during the festival's month.
A. world in that sacred truce was proclaimed during the festival's month.
B. world, proclaiming a sacred truce for the festival month
C. world when they proclaimed a sacred truce for the festival month
D. world, for a sacred truce was proclaimed during the month of the festival
E. world by proclamation of a sacred truce that was for the month of the festival
A为何错？解释： .在A 中明显的错误是festival's month. should be festival month, adj. modified N!
sc question,thank you1!
1)during R's years in office, black Americans began voting for Democrats rather than Republicans in national elections,but Black support for Democrats at the state and local levels (developed only after when civil rights legislation was supported by Harry Truman.)
B:developed only after when Harry Truman supported civil rights legislation
C:developed only after Harry Truman'support of civil rights legislation by Harry Truman
问题：答案C，当时我选了B，虽然感觉不是很好，但看C觉得很别扭。
2)Following the destruction of the space shuttle Challenger, investigators concluded that many key people employed by the National Aeronautics and Space Administration and its contractors work an excessive amount of (overtime that has the potential of causing) errors in judegment D vertime, a practice that has the potential for causing Evertime, a practice that can, potentially, cause.
选E，我选了D，是否"potential"只有 the potential of doing 一种用法，我每选E是觉得它无端加了CAN，改变原意 [I]解释：[/I] 1.after与when连用是不对的，所以只能选C。去掉when可以考虑。 2.potential可用potential of doing sth or potential to do sth.但have potential for doing sth的用法极不规范。而且使用插入语也是ETS英语文法的要求之一
LZM中6-12的题。 It is oversimplified view of cattle raising to say that all one has to do with cattle is leave them alone while they feed themselves, corral them, and to drive them to market when the time is ripe.
c)all one has to do with cattle is leave them alone while they feed themselvs and then corral them and d)the only thing that has to be done with callte is leave them alone while they feed themselves, corral them, and [I]解释：[/I]答案是C。 THIS IS A GOOD QUESTION。 C，D都符合平行结构。但是，C的主语是all one has to do with cattle。主动形式 D的主语是the only thing that has to be done with cattle.被动形式。 C比D更简洁，而且在GMAT中主动优先于被动。 PS。我记得这是一个让背的例子
请教一道语法题 1 More than five thousand yers ago, Chinese scholars accuratey described the flow of blood as a continuous circle controlled by the heart, but it went unnoticed in the West.
(C)although it was (D)but the discovey went
[I]解释：[/I]答案是D it在GMAT中，除了用作形式主语外，不可以引导一句句子它如果出现的话，应该是代词，具体指代前面的一个名词
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