问题补充:
If I that program the day before yesterday, my computer wouldn’t have broken down.
A. didn’t run
B. haven’t run
C. hadn’t run
D. were not to run
答案:
A. didn’t run
B. haven’t run
(答案→)C. hadn’t run
D. were not to run
解析:考查虚拟语气。句意:如果我前天不运行这个程序,电脑就不会瘫痪了。根据the day before yesterday和后面的wouldn’t have broken, 可知假设条件与过去相反, 所以用过去完成时态。选C。