Question

if it for the snow we the moutain yesterday

If it __________for the snow, we ___________the mountain yesterday.
A. were not; could have climbed B. were not; could climb
C. had not been; could have climbed D. had not been; could climb
选C为什么

Answer 1

这是虚拟语气，此句表示与过去事实相反的假设，条件从句中用“had (not) +过去分词”形式，主句中的动词用“could/would/should+have+过去分词”的形式。这句话的意思是：如果昨天不是因为下雪，我们就能爬山了。而事实是昨天下雪了，没有爬山，这句话是对过去事实相反的假设，用虚拟语气。所以选C。

希望能帮到你，祝更上一层楼O(∩_∩)O

Answer 2

假设过去的，主句用完成是，从句退一步用过去完成时

Answer 3

C. had not been; could have climbed