og 179

rhod

应该是correct的错误。

irenelj78

答案C) Native Americans, with their intimate knowledge of the ecology of the land, helped to rescue，这个代词指代谁？不会有指代不明的错误吗（比如说指代newcomers）？我现在不太清楚代词的指代问题，想在这里借这道题目听听nn们的指点。

rt316

虽然their前的确出现了两个复数名词，但是由于During结构引导的是从句成分，而native Americans引导的是主句成分，with后的结构是主句的一个部分，所以，从语法上their优先指代主句主语。

irenelj78

哦， 谢谢了

我记得白勇的讲课里面说：代词查找对象规则：1主语核心词2宾语或表语名词短语的核心词3修饰语中的名词。怎末理解这个规则呢？

linda05312

以下是引用fdkbaby在2003-12-8 23:47:00的发言：
正是因为连接句子，所以才加逗号啊。两个简单句用连词连接构成复合句（compound sentence－a sentence that has two or more main parts）

如果连接谓语、宾语之类的简单句中的某个成分则不用逗号了。

以下是引用Snazzy在2003-12-10 14:22:00的发言：
hold on a second, there is an exception:
'and' can be used to express results and explanation:
Water the seeds and they will germinate. (from dictionary)

oh, I'm so confused about "the comma required before and in larger compound sentences", when should it be omitted?

Thanks!

peajack

我认为：

这个是og的语法规则，即：s+v....,and s+v....

                                          s+v ...and v ....

同理请看og135（错误分析与这个题如出一辙）。其他好像还有我记不得了

9楼的那道题也证明了这一点。be 错在豆号，cd错在it.

请指正，谢谢。

advantage

前面有逗号的分词可以修饰前面的名词, 也可以修饰前面句子

harlequin

以下是引用noven-wang在2003-12-8 11:52:00的发言：
179. During the early years of European settlement on a continent that was viewed as "wilderness" by the newcomers. Native Americans, intimately knowing the ecology of the land. were a help in the rescuing of many Pilgrims and pioneers from hardship, or even death.
(A) Native Americans, intimately knowing the ecology of the land, were a help in the rescuing of
(B) Native Americans knew the ecology and the land intimately and this enabled them to help in the rescue of
(C) Native Americans, with their intimate knowledge of the ecology of the land, helped to rescue
(D) having intimate knowledge of the ecology of the land. Native Americans helped the rescue of
(E) knowing intimately the ecology of the land, Native Americans helped to rescue
B creates an awkward, redundant, fused sentence in which the first clause has to be repeated in the vague this of the second clause; furthermore, the comma required before and in larger compound sentences is omitted.

"this"的用法在这里有什么不妥么？为什么说the first clause has to be repeated in the vague this?

titatita

以下是引用noven-wang在2003-12-16 22:30:00的发言：
我又发现了一道关于and是否要加逗号的题目了，请大家指教。
259. Five fledgling sea eagles left their nests in western Scotland this summer, bringing to 34 the number of wild birds successfully raised since transplants from Norway began in 1975.
(A) bringing
(B) and brings
(C) and it brings
(D) and it brought
(E) and brought
答案选A,我当时排除E时看到and前面用了逗号，因为我觉得同一个主语发出的动作，不应该有逗号分隔。可是og的解释里面只字未提哦！！why??我又错了么？？

因为这题逗号前后并不是并列成分,逗号后面bringing指的是逗号前面整句话Five fledgling sea eagles left their nests in western Scotland this summer带来的结果所以从逻辑意思的角度根本不能用and连接,而应该用现在分词表伴随结果.

titatita

以下是引用harlequin在2005-12-3 20:01:00的发言：

"this"的用法在这里有什么不妥么？为什么说the first clause has to be repeated in the vague this?

在gmat中,this不能做代词使用,更不能指代前面整句话,