have just bought a car和 bought a car a short time ago

问题描述:

have just bought a car和 bought a car a short time ago

Have just bought a car: 刚刚买了一辆车
强调刚才买的 另外你这个句子 应该是错的 buy不能用作完成时
Bought a car a short time ago: 前一段时间,我买了一辆车
这个是我前端时间买的 比前一个句子 时间要长一些

一个意思,只不过前一个常用,更符合英文说法

have just bought a car完成时,强调对现在的影响
bought a car a short time ago过去时,强调过去发生的事情