题目内容
12.The manager ___ the workers how to improve the program since 9a.m.( )A. | has told | B. | is telling | ||
C. | has been telling | D. | will have told |
分析 句意:自上午9点以来,经理一直在告诉工人们如何来改善这个项目.
解答 答案C. have/has been doing 表示过去发生的某个动作一直持续到现在,可能刚刚结束,还可能继续持续下去.根据句意,自从上午9点以来,经理一直告诉工人们如何来改善这个项目.是过去发生的动作,可能还会继续持续下午,故选C.
点评 本题是基础题,考查现在完成进行时,要掌握该时态的具体用法并结合具体的语境选择出正确选项.
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