浙江专升本 | 浙江专升本考试英语语法第六章——情态动词+行为动词完成进行式
发布时间:2020-12-01浏览:次
编辑:xinting
11.情态动词+行为动词完成进行式
情态动词+行为动词完成进行式(即情态动词+ have been + v-ing 形式),表示推测或评论过去某动作是否正在进行或一直在进行。例如:
1)They should have been meeting to discuss the problem.
2)He may / might have been buying stamps in the post office when you saw him.