标题: OG12 78 [打印本页] 作者: vilawe 时间: 2011-8-16 18:05 标题: OG12 78 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 这题答案选D，我明白为什么要选这个，只是有两个比较低级的小问题不是很清楚，望各位指教！ （1）making the sloth the earliest known mammal on the Great Antilles Islands中为什么要用on，不用of呢？of表所属，不是还更靠谱吗？ （2）什么时候分词做伴随状语时后面是跟过去分词做伴随状语啊，好像我还没有看到过这样的句子，或者曾经看到也无视了……总之请大家帮帮忙 谢谢各位啦！作者: akyni 时间: 2011-8-16 18:44
1.on表示在某地点。
