[求助]OG 53 C的解释不明白

53.
                    There is no consensus on what role. if any, is played by acid rain in slowing the growth or damaging forests in the eastern United States.

(A)  slowing the growth or damaging

(B)  the damage or the slowing of the growth of

(C)  the damage to or the slowness of the growth of

(D)  damaged or slowed growth of

(E)   damaging or slowing the growth of

The corrected sentence must make clear that both damaging and slowing the growth of refer to forests. E is the only choice that does so without introducing errors. In choice A, of is required after growth. In choices B and C, the use of the damage instead of damaging produces awkward and wordy constructions, and without to after damage, B is grammati­cally incomplete. In C, the slowness
                of does not convey the original sense that the rate of growth has been slowed by acid rain. Choice D also changes the meaning of the sentence by making both damaged and slowed refer to growth.

看了以前的解释，还是不明白！

C的解疑问：为什么slowness不能表达原句的rate of growth has been slowed by acid rain？the damage to 与 the slowness of the...是并列的啊，damage可以表达，为什么slowness不能表达？

先谢谢了！

我认为，本题突出考点就是prep + －ing形式做状语，-ing形式主语与主句一致。

(A)  slowing the growth （缺少of）or damaging
    

(B)  the damage or the slowing of(or两边不平行) the growth of
    

(C)  the damage to or the slowness of the growth of
   

关于选项C要提到一个关于动作名词（动词具有名词形式）和动名词的区别问题，动作名词突出结果，-ing突出动作，如果真碰到这道题一样这种情况，搞不清楚到底用-ing形式，还是动作名词就干脆在后面加个...的动作（行为）或者...的结果（状态），本题可以说：迄今为止还没有达成一个共识，关于酸雨在侵蚀并且减缓美国东部森林生长这种（行为？结果？）下到底充当了一个什么角色？可见本句还是行为比较合适。

(D)  damaged or slowed(or两边不平行) growth of

(E)   damaging or slowing the growth of

谢谢mattus，没有想到这么快有回复。你的这个方法我会在后续做题时验证。

但是我还想知道og的这个解释是为什么，依据是什么？继续请教。

the slowness of the growth of  意思应该是,森林生长的缓慢,

如果联系前面的部分,意思就变成是, "酸雨对森林生长的缓慢起什么作用",这样与想要表达的意思,"酸雨在延缓森林森林生长上起什么作用" 还是有一定的差距的

后者表现出了,是酸雨使森林的生长缓慢

原则上, SC改错应不改变原句意,要更正的是修饰语位置不当,修辞不当或语法结构不合理等错误造成的歧义、不简洁或不规范。.

这也是不看全句和句意，只靠技巧答题，SC很难高分的原因之一吧。

参考。

谢谢各位的精彩回答。我已明白"为什么slowness不能表达原句的rate of growth has been slowed by acid rain？"。

但是，A的damage为verb,而C的为noun，为什么没有改变原句的意思？而slow变了词性就改变了意思，是不是damage是verb、noun表达同一个意思啊？

我想首先是逻辑意思，如果原句（A选项）逻辑意思合理，那么它就是original sense，尽管它可能有其他的语法、习语等的错误。

有逻辑错误的如og某一题：房子被heavily damage and destroy (好像是这个词)，房子不能同时承受着两个动作，要么heavily damage ，要么destroy ，两个词要用 or 连接。

原句没有逻辑错误的前提下，其他的选项不是A的意思即改变了原意。如原句：X=5；选项要是X=6就改变原意了。