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.
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
1)对于A的选项,og解释和manhattan明显有所出入:og认为fossils of the arm of a sloth中 sloth为短语的object,而不是subject,因此不可以成为it的先行词;manhattan里面有说A‘s B的情况是个poor antecedent,因此在下面例子中将它改为B of A,且这个例子为better(当然也有说还是有点ambiguous-因为例子中A 和B都是单数,不好判断。而A中一个是fossils 另一个是sloth,因此不应该是ambiguous吧。。。) 简单概括的话,A of B这个结构在og中只有A可以成为先行词;而manhattan认为A和B都可以。是我的理解产生偏差了?到底要听哪个呢? 2)还是关于OG对于A的解释:og中提到“sloth is the object of a preposition", 我的问题是:object of a preposion是什么呢?好像问题解析中 不止一次提到。 3)就是一个综合性的问题:A of B结构后面跟的modifier可以修饰B吗? 如果后面出现代词,B可以成为先行词吗? 这个问题已经困扰我n天了,求NN!! 如果我的理解产生了偏差,希望大家及时指出~~!!拜托了!!!
object of prep我觉得是主语这一块如果是介词结构,那A of B中肯定重心在B这块。但GMAT一向抓的是逻辑主语,现在我基本也不看A of B到底哪个去判断,我直接读句子判断逻辑主语是哪个。这句里面只有fossiles可以去测试到底年代多久远,可以去表明在哪里哪里被挖掘,所以逻辑主语是fossiles。任何agreement里是单数的都可以系数刷掉。答案只可能D。
A的这个ed就近修饰sloth,单独念觉得没问题,但整句里会有歧义。被发掘的是逻辑上首先成立的是化石,如果要修饰化石最好划个逗号。而且A的逻辑意思相当混乱。即使我们假设划了个逗号,found和后面的dated修饰fossiles。整句句子其实就能简化为fossiles made it the earliest mammal xxxx...逻辑意思不同,因为found和dated的部分不是主句的条件状语,所以与后来的made不能建立语法上的逻辑联系。要建立逻辑联系句子最好这样改:found in xxxx and dated at xxxx, the fossiles xxxxx was the earliest xxxxx....又或者用逗号+ing的形式表结果状语。