分词和从句,我的致命伤

hedgeforfun

23.    According to United States Air Force officials, a cannon shooting dead chickens at airplanes has proved helpful to demonstrate what kind of damage can result when jets fly into a flock of large birds.
(A) shooting dead chickens at airplanes has proved helpful to demonstrate
(B) shooting dead chickens at airplanes has proved itself helpful as a demonstration of
(C) shooting dead chickens at airplanes proves itself helpful as demonstrating
(D) that shoots dead chickens at airplanes proves itself helpful to demonstrate
(E) that shoots dead chickens at airplanes has proved helpful in demonstrating
选d,我怎么觉得a好.
何时用分词,何时用从句呢?真后悔中学英语课不该开小差

lisashaw

选A的话，你觉得shooting在这里修饰的是谁呢？比较模糊...

[此贴子已经被作者于2003-10-26 0:21:04编辑过]

braveMBA

这可不是中学英语能解决的问题。这是ETS在GMAT里自以为是的武器之一。

最大的区别是，分词强调伴随性、规律性、重复性，从句强调状态、结果、静态。其他的方面建议从其他语法点先优选。

另外，认为PROVE的用法太灵活，请高人讲解。

hedgeforfun

谢谢bravemba,你说的对,哪个牛哥牛姐可以说说prove的用法呢?我真的不很清楚

gemj

这题答案是E。

hedgeforfun

啊?885的答案改过了吗?还是我弄错了?谁能再说说prove的用法?

joywzy

prove helfful in doing sth.

or u can check the dictionary .

remeo

Extra dictionary examples：

Such techniques might prove useful in detecting breast cancer.

They may prove useful for hedgers and market timers.

We have already received two ideas, which might prove useful in the workshop.