快考了，请帮我看看OG253

253. Analysts blamed May’s sluggish retail sales on unexciting merchandise as well as the weather, colder and wetter than was usual in some regions, which slowed sales of barbecue grills and lawn furniture.

(A) colder and wetter than was usual in some regions, which slowed

(B) which was colder and wetter than usual in some regions, slowing

(C) since it was colder and wetter than usually in some regions, which slowed

(D) being colder and wetter than usually in some regions, slowing（B）

(E) having been colder and wetter than was usual in some regions and slowed

这题我不明白的地方是为甚么B中的slowing结构不会有歧异。slowing的逻辑主语可以是analysts，也可以是weather，这不是有歧异吗？下个星期就考了，请NN帮我看看！先谢了！我在分词作状语上经常栽跟头，ETS有特别爱考这一点，我心里好害怕呀！

gmat 700+  講得對，本題 ets要考的是， which 能否指代region

顯然是不能嘛，所以不選，B的slowing，可視為獨立的狀語，就往前修飾weather

ing分词在句尾作状语有两种情况:

1.表示伴随动作/状态/功能,这时其逻辑主语等于句子主语,表示这个动作与谓语动作同时发生

2.表示伴随结果,这时它的逻辑主语是前面的整句话,意思是前面整句话所描述的事情导致了这个结果.本题就是这样.

谢谢三位，我懂了。slowing是定语从句的状语成分，逻辑主语为which指代的词——weather，表示与谓语was同时发生的动作。我先前的思路有点歪了，再次感谢三位好心人！！！

Analysts blamed May’s sluggish retail sales on unexciting merchandise as well as the weather, colder and wetter than  usual in some regions, which slowed sales of barbecue grills and lawn furniture.

既然如此，我也趁機搬出陳年公案，請攜隱及眾位好朋友們來解答

49.   The cameras of the Voyager II spacecraft detected six small, previously unseen moons circling Uranus, which doubles to twelve the number of satellites now known as orbiting the distant planet.

(A) which doubles to twelve the number of satellites now known as orbiting

(B) doubling to twelve the number of satellites now known to orbit

(C) which doubles to twelve the number of satellites now known in orbit around

(D) doubling to twelve the number of satellites now known as orbiting（B）

(E) which doubles to twelve the number of satellites now known that orbit

答案給B，我可以接受，但這裡的doubling是修飾誰的呢?也就是那一個主詞、名詞、甚至是一句話發起這個double的動作，請繼續討論

我想一定不是Uranus，當然也不該是cameras.....請解答，謝謝

这个题目看来doubling是作伴随结果状语,修饰前面整句话了.意思是说,人们发现了...,这个发现使得(结果)doubling了数字.

謝謝

我想，如果是which，當然不可能指一句話，但若是句意是顯示整段文字發起的動作，改用分詞就不會有問題

所以這一題(OG49)的(A) which doubles to twelve the number of satellites now known as orbiting，那怕是改成

(A) which doubles to twelve the number of satellites now known to orbit，也就是和B後半段完全一樣，恐怕還是不對，因為只有分詞能表達一段話的概念，用doubling會比which doubles更傳神