——————for your help, we'd never have been able to finish the work. 选择题求解——————for your help, we'd never have been able to finish the work. A:It was not B:Had it not beenC:Hadn't it been D:If it had been not请问这道题为设么选B,最好能帮忙分析一下,谢谢

C。对过去事实的虚拟。省略了If.原形为：If it had not been for your help.......

选B
这里运用的是虚拟语气。
首先主句用的是would have done,
而且这里没有时间错综的情况，
是对过去的假设，所以主句应该用if....had done,
而B选项就是倒装形式，
所以将had提前。
因此，选B

——————for your help,we'd never have been able to finish the work.
A:It was not B:Had it not been
C:Hadn't it been D:If it had been not
请问这道题为设么选B,最好能帮忙分析一下,
答：B
译：要是没有你的帮助,我们决不可能完成这项工作.
析：最佳E：But (for) ...= If it had not been for.要不是因为.的话.
我们知道,虚拟条件句中如果有助动词had的话,可以通过部分倒装的方法省略if:
Had it not been for...=If it had not been for...
D选项纯粹是一个凑数的干扰项.A的错误更大,没有if,也没有倒装,更不能反映对过去情况的虚拟.AD很容易排除.最大的干扰项是C,因为,我们平时见过这样的句式：Haven't I told you before?我以前难道没有告诉过你吗?但这是两码事.语法书上,关于虚拟语气,没有见到过这样的例子.语言不是数学,不能凭空推理.碰到这样的题,还是乖乖地按语法书上说的去做吧.
C到底对不对,行不行,我不敢下结论.但我可以肯定地告诉,选C不得分.选B,能得分.
听雅哥,没错的.