现在完成时的结构
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 13:07:49
![现在完成时的结构](/uploads/image/z/2857109-5-9.jpg?t=%E7%8E%B0%E5%9C%A8%E5%AE%8C%E6%88%90%E6%97%B6%E7%9A%84%E7%BB%93%E6%9E%84)
现在完成时的结构
现在完成时的结构
现在完成时的结构
肯定句:have/has +v.(过去分词)
eg.I have already finished my homework .
否定句:have/has +not +v.(过去分词)
eg.I haven't heard from him yet.
一般疑问句:Have/Has+主语+v.(过去分词)
eg.Have you ever been to Beijing?