有的单词:have
英 [hv , hv] 美 [hv , hv]
v.有;持有;占有;由…组成;显示出,带有(性质、特征)
aux.与过去分词连用构成完成时
相关介绍
A new system has been devised to control traffic in the city.
控制城市交通的新系统已经设计出来。
I think you have made an error in calculating the total.
我想你在计算总数时出了差错。
No new SARS cases have been reported in the region.
该区没有新增非典型肺炎病例。


