问题补充:
More than 20 people in traffic accidents last week.
A. died; for
B. have been dead; since
C. have died; for
D. have been dead, for
答案:
A. died; for
(答案→)B. have been dead; since
C. have died; for
D. have been dead, for
解析:句意:从上周到现在有超过20人在交通事故中丧失。现在完成时可以用来表示发生在过去某一时刻的,持续到现在的动作(用行为动词表示)或状态(be动词表示)常与for(+时间段),since(+时间点或过去时的句子)连用. 现在完成时中,非延续性动词不能与for和since引导的表示一段时间的状语连用,通常是用相应的延续性动词来代替。die对应的延续性状态是be dead.故选B。