OG-12 78做题有点晕了

mmmmmignon

这里的A选项应该还有一个问题就是那个and dated让dated也修饰sloth了 本来dated应该跟fossil的吧

可心IvyFeng

Doong 发表于 2014-11-9 16:53
今天刚做了这道题，虽然做错了，但是我还是来尝试回答下这道题。
非牛，可能说的有问题，轻拍~

请问一下， that和which都是修饰近邻的词对吗？例如此题2B，抛开逗号和they指代的问题，是修饰sloth的对吗？？

jlikel

还原C选项，fossils of the arm of a sloth that was found in Puerto Rico in 1991, was dated at 34 million years old, making this the earliest known mammal of the Greater Antilles Islands.

that紧跟着sloth应该理解为修饰sloth 即，sloth应为was found的主语，所以没有问题。但主句逻辑主语还是fossils，所以was应该改为were就对了吧？

this 如果指代a sloth的话，逻辑上有问题，会变成一个sloth是最早发现的生物！

不知道理解是否有问题，欢饮讨论

jlikel

jlikel 发表于 2016-6-18 16:09
还原C选项，fossils of the arm of a sloth that was found in Puerto Rico in 1991, was dated at 34 mill ...

对了 还有一个问题，不知道为什么答案选择用现在完成时态，date难道不是瞬间完成的事情嘛？即为瞬间动词，可以用作完成时态强调对现在的影响吗？

tongtong1994

jlikel 发表于 2016-6-18 16:19
对了 还有一个问题，不知道为什么答案选择用现在完成时态，date难道不是瞬间完成的事情嘛？即为瞬间动词 ...

我也有这个困惑...

Ron在http://www.manhattanprep.com/gmat/forums/sc-fossils-of-the-arm-t7830.html中解释了这个问题，但我还不是特别懂，他说
n describing a past event that is no longer occurring, we can use either the present perfect or the simple past. the difference between the two is one of semantic meaning:

* the present perfect (has/have VERBed) is used if the event still has a tangible impact or influence on, or relevance to, the present state of affairs.

* the simple past is used if the event does NOT have any tangible impact/influence/relevance in the present.

note that, in many cases, either of these tenses could be used to describe exactly the same event in exactly the same timeframe!
here's an example: imagine that you are talking to a guy, at a bar, who has had 3 marriages. (he is currently divorced.)

if the two of you are actually talking about marriage, he will probably say "i have been married three times".

if the two of you are NOT directly talking about marriage or its consequences -- for instance, he is just enumerating members of his family -- he will probably say "i was married three times".

both of these are correct -- in terms of both grammar and semantics.

in the example at hand, the present perfect probably makes a little bit more sense, since the findings clearly have direct relevance to the situation being discussed at present. however, it would certainly not be incorrect to use the simple past (although that usage would suggest that the findings no longer have relevance, possibly because they have been superseded by some more recent findings).

那说明be dated at这个动作发生在过去吗？为什么呢？

另外我觉得如果理解成这个句子想强调“已经有34m yrs那么久了”可能更好接受点？

求大神们指点

神粥八宝

tongtong1994 发表于 2016-8-14 10:08
我也有这个困惑...

Ron在http://www.manhattanprep.com/gmat/forums/sc-fossils-of-the-arm-t7830.html ...

date是发生在过去，但是强调对现在的影响即后面的making the sloth the earliest什么什么

CatherineStt

Doong 发表于 2014-11-9 16:53
今天刚做了这道题，虽然做错了，但是我还是来尝试回答下这道题。
非牛，可能说的有问题，轻拍~

谢谢你的回答.

回过头来重新准备gmat
我觉得根据语义 "which _ dated at 34 million years old" 应该修饰 fossils, 而不应该修饰 "a sloth", 所有用 "which was dated" 就不太合适.