问题补充:
If it for the heavy rain then, we would have arrived here ahead of time.
A. shouldn’t be
B. weren’t
C. had not been
D. be not
答案:
A. shouldn’t be
B. weren’t
(答案→)C. had not been
D. be not
解析:考察虚拟语气,根据题意,如果那时不下这么大的雨,我们会提前到达这里。可知从句假设的内容应该在过去已经发生,故从句用过去完成时态,选C。在表示过去的虚拟语气结构为从句had +动词过去分词 主句would / should / might / could have + 动词过去分词。