If it were not for the fact that she _____ sing,I would invite her to the party.[ ]

题目

If it were not for the fact that she _____ sing,I would invite her to the party.[ ]
A.couldn't
B.shouldn't
C.can't
D.might not
请解释每一个选项.

答案

that 从句 是 同位语 从句 说明the fact本身 所以是 客观事实 应该用一般现在时
故 答案是 C.can't 表示 现在不具备 某种能力.与虚拟语气 无关
与 虚拟语气 有关的是 were not和 would invite 这是与现在情况相反 的虚拟语气
选项 A.couldn't和 D.might not是 指过去情况 如果指现在 则 意思不对
选项B.shouldn't 意思不对