之前看到有人问过这题,但是底下木有解释 。我再复制过来问一下。。。 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 正确选项中that修饰cannon,简化过后就是a cannon has proved helpful in demonstrating,逻辑上不对啊。
以及 如果强调的是shooting...的这个方法,那么被证明helpful 应该是be proved 为什么全部选项都是主动形式的?
-- by 会员 宫小明 (2011/10/25 10:45:17)
貌似用现在分词是表示重复性经常性的动作。。用从句就表示一次性的。那这里应该就不能用现在分词了吧。。= =总不能天天加农炮都用来打小鸟了吧。。。
我觉得是说加农炮用来打鸡这件事能证明飞机开进鸟堆里的严重后果。。所以应该用主动吧。。 |