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标题: OG-12 SC-78 代词指代和时态 双重困扰 [打印本页]

作者: li2966262    时间: 2011-2-3 14:52
标题: OG-12 SC-78 代词指代和时态 双重困扰
78. Fossils of the arm of a sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of the Greater Antilles Islands.

(A) sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of
(B) sloth, that they found in Puerto Rico in 1991, has been dated at 34 million years old, thus making it the earliest mammal known on
(C) sloth that was found in Puerto Rico in 1991, was dated at 34 million years old, making this the earliest known mammal of
(D) sloth, found in Puerto Rico in 1991, have been dated at 34 million years old, making the sloth the earliest known mammal on
(E) sloth which, found in Puerto Rico in 1991, was dated at 34 million years old, made the sloth the earliest known mammal of

答案是D  问题不是选答案~  
1. A选项的IT怎么看指代 经常有A OF B,后面一个从句 分句有个IT不知道怎么看指代
2.D选项的完成时态怎么解释?!
作者: cocoloop    时间: 2011-2-3 17:46
首先,a选项的句子是不正确的,句子主干是Fossils made it the earliest mammal of the Greater Antilles Islands.化石不可能使树懒成为the earliest mammal .在这个句子中,it即the earliest mammal 故只能指sloth,但sloth只是主语的一个修饰成分,it 不能指代它,你不能说:一个树懒的胳膊的化石使它成为最早的哺乳动物。相当于前文没有出现“它”指代的内容。另一方面,d选项就是Fossils have been dated at 34 million years old,making the sloth the earliest known mammal on....可以自己体会一下
作者: li2966262    时间: 2011-2-3 21:59
谢谢~那个完成时怎么个说法
作者: ParkShanghai    时间: 2011-3-17 14:43
我也不清楚这个时态的事情,但是仔细看下选项会发现,都是用的has 或者是was, 不符合主语fossils的要求,只有D选项用的have been,所以选择D
作者: wlf1987    时间: 2011-3-17 19:43
在这句里,现在完成时不是唯一可行的时态
,但却是最合适的
作者: oisee    时间: 2011-3-17 21:13
曼哈顿语法有相关解释,a of b 型的 后面最好直接说指代对象不要用代词....
作者: Heather_Lau    时间: 2011-7-11 23:16
不明白为什么D最后的分句要用making.
那不就变成fossils of.... making the sloth the earliest know mammal on...
作者: nemiah    时间: 2011-7-11 23:23
Making...做伴随状语
作者: ymbspy    时间: 2011-7-30 20:40
首先,a选项的句子是不正确的,句子主干是Fossils made it the earliest mammal of the Greater Antilles Islands.化石不可能使树懒成为the earliest mammal .在这个句子中,it即the earliest mammal 故只能指sloth,但sloth只是主语的一个修饰成分,it 不能指代它,你不能说:一个树懒的胳膊的化石使它成为最早的哺乳动物。相当于前文没有出现“它”指代的内容。


请问是否可以说明代词it,they只能指代主语的中心词,them只能指代宾语的中心词?
我记得以前上XDF时老师好像还说过什么可以指代中心词及其修饰语什么的。。。能否请教大家给我讲明白?
作者: alicehanghang    时间: 2011-8-9 17:25
其实这句话就是高中语法中的fossils of the arm of ……, which made it the earlist……
在高中语法中,这是一个定语从句,which可以指代前一个句子。但是在GMAT中,认为which不能指代句子,若要表达相同的意思,便将定语从句中的谓语改成doing形式。




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