摘要：An awful accident, however, occur the other day. A. does B. did C. has to D had to 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为强调用法.
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An awful accident ______ however occur the other day.
[ ]
A. does
B. did
C. has to
D. had to
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B. did
C. has to
D. had to
An awful accident ____, however, occur the other day.
A. does B. did C. has to D. had to
查看习题详情和答案>>