PREP 一道

sunjin1988

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

A.
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 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

这道题我觉得结构好奇怪 这个that怎么能这么用 答案是C  不是说be to do永远错吗？ 这种题目怎么做啊

TheAssembly

虚拟语气而已

sunjin1988

能解释下吗 我不太明白 为什么是虚拟

TheAssembly

我不太明白为什么要用虚拟语气，但我想这是个虚拟语气，从it were可以看出来。

2000 BF19和IF IT WERE TO STRIKE EARTH都是插入成分，看的时候去掉就是。that(, if it were to strike Earth, )could do tremendous damage to part of the planet but would..和前面的that is about half mile wide 两个定语从句构成并列结构修饰ASTEROID

[此贴子已经被作者于2009/10/20 16:30:06编辑过]