Question

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

Answer 1

C

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。