Question

__their help ,we would not have succeeded

A Hadn't been for
B Had it not been for
C It hadn't been for
D Had not it been for
给理由，谢谢

Answer 1

选B Had it not been for
1.等于 If it had not been for their help 因为If 省略了，习惯上只有把助动词had前置
2.这是个固定句型，表示“如果没有”
3. 从主句形式可见，这是表示与过去事实相反的虚拟语气

全句意为： 如果没有他们的帮助，我们不会成功的。

O(∩_∩)O 认同请采纳，不懂继续问。 祝学习进步! 谢谢！

Answer 2

B had it not been for = if it had not been for
这是与过去事实相反的虚拟条件句， 要不是因为他们的帮助。

不懂追问，如能帮到，请及时采纳，谢谢！

Answer 3

B解释就不说了，楼上都有，就是排除法也出来了，A和D是同样，故不选。只剩下BC，would not have 这边显然表示的是虚拟语气，C排除，只剩下B了

Answer 4

A