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

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my uncle bought a new sports car a month ago改为现在完成时
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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buy要改为have,这样才能延续.