An awful accident, however, occur the other day.
A. does
B. did
C. has to
D. had to
网友回答
A. does
(答案→)B. did
C. has to
D. had to
解析:此题正确答案应选B,句末的the other day意为“前几天”,所以句子应用过去时态,而选项D填进去不合题意,故选B。此句有两个难点:一是句中插有however一词,分散了同学们的注意力;二是所填选项B为许多同学所不熟悉的强调用法。
【标签】动词的强调形式