同学你好，该知识点来自沪江网校《2022考研蜕变计划定制班 政英+专业课、公共课1对1+暑期集训营【现金奖励班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学，buy是短暂性动词，要么“买了”，要么“没买”，不和时间段连用。
我们可以说: I bought a new car two years ago. 或者，I has bought a new car.
所以红框中，She has bought a new car for 2 years. 错误。
                   She has had a new car for 2 years.       正确。
                   She has bought a new car 2 years ago. 错误。
瞬间性动词不和一段时间连用，延续性动词可以和一段时间连用。
比如：I have kept birds for about 30 years. 我养鸟大约有30年了。
         His grandfather has been dead for ten years.他爷爷过世10年了。