prep的一道题，讲地球轨道垃圾的

lainemai

Since the start of the space age, more andmore littering has occurred in orbits near Earth, often because theintentional discarding of lens caps, packing material, fuel tanks, and payloadcovers.

A more andmore littering has occurred in orbits near Earth, often because

B orbitsnear Earth have become more and more littered, often from

C orbitsnear Earth became littered more and more, often resulting from

D therehave been more and more littering of orbits near Earth, often because of

E there had beenlittering more and more of orbits near Earth, often with
正确选项是B，当时我纠结的点在后面，可以排除掉because 和because of 的那几个句子，但是对from 和resulting from存疑，拿B选项来说，often from前面有逗号和主句隔开，那么这个from不是就修饰的是主句的主语吗，这样带进去貌似不合逻辑丫，orbits怎么能from the international discarding......呢？但是这句话里littered做的又是形容词，怎么可能是from的主语呢？难道from是修饰前面整句话吗？这个怎么看出来呀，求大神解释~谢谢~

leohhy

Since the start of the space age, more and more littering has occurred in orbits near Earth, often because the intentional discarding of lens caps, packing material, fuel tanks, and payload covers.

A more and more littering has occurred in orbits near Earth, often because
》》》because + 句子
B orbits near Earth have become more and more littered, often from
》》》正确，from可以译作“因为”
C orbits near Earth became littered more and more, often resulting from
》》》时态错误，应该与since配合使用现在完成时态；resulting from构成的现在分词独立结构的逻辑主语是orbits，“orbits导致。。。”，句意不对。
D there have been more and more littering of orbits near Earth, often because of
》》》littering of orbits，句意不对
E there had been littering more and more of orbits near Earth, often with
》》》littering more and more of。。。nonsense；with引导的介词独立结构只能作定语修饰earth，nonsense。

lainemai

leohhy 发表于 2014-10-16 19:39
Since the start of the space age, more and more littering has occurred in orbits near Earth, often b ...

那你能解释为什么often from不是修饰主语吗？

leohhy

lainemai 发表于 2014-10-16 20:05
那你能解释为什么often from不是修饰主语吗？

from引导的介词独立结构，这里from译作“因为”是做状语，所以修饰的是主句，而不是主语。
这里不是现在/过去分词独立结构，所以不涉及主句主语做逻辑主语这么一说。

lainemai

leohhy 发表于 2014-10-16 20:35
from引导的介词独立结构，这里from译作“因为”是做状语，所以修饰的是主句，而不是主语。
这里不是现在/ ...

恩恩，谢谢啦，后来我查了一下词典，from真的有这么一说，谢谢~