改错:My elder sister has studies physics since eight months

来源:百度知道 编辑:UC知道 时间:2024/06/14 08:28:50

My elder sister has studied physics for eight months.

错误一:这句话是过去完成时,所以has后面应
该加过去分词
错误二:eight months表示一段时间,所
以只能用for而不是since

has+过去分词

My elder sister has 【studied】 physics since eight months