题目内容：

my uncle bought a new sports car a month ago改为现在完成时

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为你解答.My uncle bought a new sports car a month ago. （改为现在完成时）My uncle has had a new sports car since a month ago.我叔叔已经买了一辆新跑车一个月了.解释：因为时间状语为一段时间,所以短暂动词b...