题目内容
20.In the past two years,the number of campus bookstores offering rentals _____ from a few dozen to 1,500.( )A. | jumped | B. | had jumped | C. | is jumping | D. | has jumped |
分析 在过去的两年里,提供租书的校园书店的数量已经从几十家一下增加到一千五百家.
解答 答案:D
题干中In the past two years在过去的两年里,表示从过去到现在的时间;句意表达的是现在的结果,是现在完成时态的用法.故选D.
点评 现在完成时表示过去发生的动作对现在造成的影响或结果或表示过去的动作或状态持续到现在.用法有:过去发生的某一动作对现在造成的影响或结果或到现在为止已经发生或完成的动作;表示过去发生的并且持续到现在的动作或状态.
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