og12-41 og12-59 og12-95

jy03161061

41.To develop more accurate population forecasts, demographers have to know a grea deal more than now about the social and economic determinants of fertility.

A    have to know a grea deal more than now about the social and economic

D    would have to know a great deal more than they do now about the social and economic

正确选D 但我认为A 中的they do 是可以省略的，因为他的主谓都一样啊，请同学们帮我看看

59.The Olympic Games helped to keep peace among the pugnacious states of the Greek world in that a sacred truce was proclaimed during the festival's month.

A   world in that a sacred truce was proclaimed during the festival's month.

D  world, for a sacred truce was proclaimed during the month of the festival.

正确选D  我选正确的，但不知道A是怎么错的，in that 也能表示原因阿，不是错在the festival's month上面了吧。。。。

95.The peaks of a pountain range, acting like rocks in a streambed, produce ripples in the air flowing over them; the resulting flow pattern, with crests and troughs that remain stationary although the air that forms them is moving rapidly, are known as "standing waves".

A  crests and troughs that remain stationary although the air that forms them is moving rapidly, are

E  stationary crests and troughs athough they are formed by rapidly moving air,is

这题我一战的时候就没有想明白，GMAT不是要求简洁么，名词后面接上that +形容词不如形容词+名词来的更复杂？请同学看看吧。。。弄死想不通

jy03161061

UP

jenny1989

41。A和D最大的区别就在于时态  你仔细看 D是不是多了一个would 这个是将来时态

任何时态的使用的考点（考查点）在原文都一定会有对应 所以看到时态区分问题一定要回归原句 找标志

这题的标志就是forecasts 表预测 所以用将来时态更合适

59.确实问题在the festival's month上 无生命的一般使用n of n形式 A不是不对 是不如D好 D选项的表达更清晰

95.LZ贴错了吧 这题选C 主谓一致就可以马上排除剩下C和E

E错在用了被动形式 使动作发出者丧失 所以相对而言C主动形式更好

jy03161061

非常感谢LS的回答,最后那道的确是贴错了,正确答案是

C creats and troughs that remain stationary although  the air that forms them is moving rapidly, is

以上都明白了，不过还有同学来说明下 in that 的用法么？

jenny1989

in that 固定用法，引导原因状语从句。意思为：原因在于，由于，既然

其实和because用法相同 都是介词 后面要接句子

 0

iamyaoyao

我认为95的不是被动主动的问题，OG上说是从句although的问题，E的althougt从句接在了一个短语后面（with...)是不对的，从句必须有主句，C才是正确的，although接在了一个关系从句that后面

尘未

我认为95的不是被动主动的问题，OG上说是从句although的问题，E的althougt从句接在了一个短语后面（with...)是不对的，从句必须有主句，C才是正确的，although接在了一个关系从句that后面

-- by 会员 iamyaoyao (2009/10/13 7:32:00)

貌似这个解释靠谱~~

尘未

http://forum.chasedream.com/GMAT_SC/thread-430220-1-1.html#last

although的存在是为了表达转折的含义，从句意上看是stationary和moving rapidly的转折对比
先看正确选项，连接的是that remain stationary 和the air is moving rapidly，结构、含义上都非常对称。
再看正确选项E里面although连接的却是crests and troughs和they are formed by rapidly moving air，可以发现crests and troughts与它们怎么形成的无法形成一个"转折"。能形成转折的是crests and troughts的stationary和air的moving rapidly.
-- by 会员 aeoluseros (2010/1/3 6:59:41)

cx_ding

我是这样理解的，请牛牛们指正。
第一题：情态动词+完成时态表推测，和将来时无关。
第二题：主要是所有格的问题。另外，in that 和 because 在含义上有一点区别。in that 表示一种特殊的可能性，可以理解为“特别是因为”，并不完全是because所表达的强因果关系。
第三题：“crest and troughs 维持稳定，虽然......”和“稳定的crest and troughs，虽然......”含义是不同的。

merryrq0209

大家应该好好看下OG的解释，59题in that之所以不对的原因是OG官方解释说：

in that has largely gone out of use, it's considered stilted and overly formal.

就是说in that已经过时了，不用啦~~~