题目内容
19.The driver could have survived,but he ____ the seat belt.( )A. | had been fastening | B. | hadn't fastened | ||
C. | was fastening | D. | didn't fasten |
分析 司机本可以幸存下来的,但是他没有系安全带.
解答 答案:D,考查否定句,由谓语could have survived"本可以存活下来"可知描述的是"司机过去没有系安全带",故时态用一般过去时,答案为D,A选项是过去完成进行时,表示过去开始动作一直在持续,B选项是过去完成时,表示过去以前就发生的动作,C选项是过去进行时表示过去某一时刻正在发生的动作,均不符合题意.
点评 考查否定句,要结合语境对句子成分进行分析.
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