题目内容
3．-What do you think of the traffic accidents？-I think many accidents ________ by careless drivers．（ ）
| A． | have caused | B． | were cause | C． | are caused | D． | will cause |
分析 -你怎么看待交通事故？
-我认为很多交通事故是因为司机粗心造成的．
解答 答案：C 根据主语many accidents与谓语动词cause可知，是被动的关系；叙述的事情是客观存在的事实，所以要用一般现在时态的被动语态，结构为am/is/are+动词过去分词，主语为复数，故选C．
点评 动词的应用，不仅要看时态还要看语态；通过时间状语判断时态；通过主语与谓语动词的关系判断语态．
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