题目内容
20.--Do you know her well?--Sure.We ___ friends since ten years ago.( )
| A. | were | B. | have made | C. | have been | D. | have become |
分析 -你了解她吗?
-当然,从十年前我们就是朋友了.
解答 答案:C 根据since ten years ago可知,这是一个表示一段时间的时间状语,用现在完成时,现在完成时态的结构为have/has+动词的过去分词,而make和become都是瞬间性动词,不能持续一段时间,所以要用be延续性动词后面跟时间段,故选C.
点评 判断动词的时态,要通过所给的时间状语或语境去判断动词存在的状态,本题注意短暂性动词和延续性动词的区别.
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