2. 外语
  3. Among the four sentences below, it is sentence______that expresses the concepts of incompleteness and current relevance.

Among the four sentences below, it is sentence______that expresses the concepts of incompleteness and current relevance.

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问题 Among the four sentences below, it is sentence______that expresses the concepts of incompleteness and current relevance.
选项 A、He has been revising his term paper.
B、He was revising his term paper.
C、He has revised his term paper.
D、He revised his term paper.
答案A
解析 动词的过去时形式表示动作“已完成”；动词的现在进行时形式或过去进行时形式表示动作“未完成”；动词的现在完成时表示动作“已完成并与现在的时间有联系”。而动词的完成进行时形式则表明动作“未完成且延续到说话时刻，并可能继续下去。”试比较：He has eaten my chocolates．(意味着：他吃过巧克力，而且巧克力都被他吃完了。)He was eating my chocolates．(意味着：他吃过，但不确定巧克力现在是否已被吃完。)He has been eating my chocolates．(意味着：他一直在吃巧克力，但是巧克力没有被吃完。)
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