must have

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/30 18:39:01
must have

must have
must have

must have
“当时一定是...”
此句型用于表示对过去发生的事情的推测.
如 He must have been Swedish.他当时一定是瑞典人.
希望我的回答能够帮到你,

must have been/done 表示对过去已知事实的肯定推测