改错:My elder sister has studies physics since eight months

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/28 22:24:10
改错:My elder sister has studies physics since eight months
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改错:My elder sister has studies physics since eight months
改错:My elder sister has studies physics since eight months

改错:My elder sister has studies physics since eight months
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