有关插入语-GWD9-27

llindar

 

GWD9-27

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

llindar

选项C没有问题，可是看以前的帖子，最后没有讨论出 if it were to strike eartch到底是什么成份，确定是插入语吗？ 但是插入语应该对句意不产生影响的。大家怎么看？

llindar

主句的宾语的定语从句that，and that的条件状语从句

rongmmers

if it were to, ... could ...

应该是表示与将来事实相反或不太可能实现的情况的虚拟语气

AJingJing

C正确是建立在第二个that引导了一个定语从句,修饰asteroid.
即asteroid that ,(if it were to strike earth), could do .................
我想lz的意思是想问为什么括号中的部分被生硬的插入了主语跟谓语之中把.

其实这题我也一直想不通^_^,我是选A的,但有牛指出,按我的理解,and逗号应该放前面,呵呵.
BTW:个人感觉if x,y的句型一般x都是现在时,y是将来时.不知道为什么大家都说if后要加虚拟语态,我自己再去看看语法点得.