Jimmy has a toothache.Must he sees a dentist?为什麽see加S是错误的?

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/04 22:56:58

Jimmy has a toothache.Must he sees a dentist?为什麽see加S是错误的?

must 是情态动词
情态动词后面只能用动词原形