GWD-9-Q27 答案中的单复数不一致可以忽略？？？？？？快来

witchingwang

Scientists have identified an asteroid, 2000 BF19, that is about half a mile wide and, if it strikes Earth, it can do tremendous damage to part of the planet but probably not cause planetwide destruction.



A. and, if it strikes Earth, it can do tremendous damage to part of the planet but

B. and, if it would strike Earth, part of the planet could experience a tremendous amount of damage but it would

C. and that, if it were to strike Earth, could do tremendous damage to part of the planet but would

D. and that, if Earth is struck by it, can do part of the planet tremendous damage, but it would

E. and that, if it strikes Earth, it could experience a tremendous amount of damage but
答案 c 。 我的问题是为什么没有人说 c it were .... ， 这多大个单复数不一致啊。
这有什么其他说明？？？？NN快来帮帮我~！

前人点评终结：
A. 没有体现出假设的语气，strikes用了现在时；同样can也不对，it并没有发生，所以只能could。But后面同样需要有情态动词，could/would。

B. it 根据后面主句，应该指part of the planet，但是but后面的it应和前面一致，所以意思不对。It应该指an asteroid。Would使用错误，若在if从句中使用过去时态表虚拟，应改为striked或者were to strike。

C. 正确。虚拟语气表达一种假设，实际并没有发生。

D. do part of the planet tremendous damage表达awkward,易有歧义，是理解成do part of （the planet tremendous damage）；it多余，应和前面can平行。It应指代asteroid, 但结构上却和前面一致，指代了earth，错。

E. 没有体现出假设的语气，strikes用了现在时；but后没有情态动词，表达不出假设的语气。两个it从逻辑上说指代了不同的东西。it could中的it多余，That定语从句中that做句子的主语。

superfans124

这好像是属于idiom的英语用法，当假设if时，if I were, if it were，如此

witchingwang

 原来是这样~！今天又看到 were it 了。明白了。谢谢楼上。

xwnh6145

我勒个去 - -

superfans124

correction, 不是idiom, 曼哈顿SC第七章verb tense, mood & voice strategy, P106, 基本上不是考点，知道就行