Question

Had it not been for the haze（霾）weather phenomenon, there         fewer car accidents in Beijing then．

1. A.
   would have been
2. B.
   were
3. C.
   may be
4. D.
   would be

Answer 1

A
试题分析：考查虚拟语气：句意：要不是因为雾霾天气，那时北京的交通事故会更少，从Had it not been for the haze（霾）weather phenomenon,可知是和过去相反的虚拟条件句，相当于：If it had not been for the haze（霾）weather phenomenon,所以主句也是和过去相反的虚拟语气，用would have done，选A。
考点：考查虚拟语气