hasbeen过去分词是什么时态

回答

爱扬教育

2022-03-10

has been是完成时态，完成时的动词结构是：have / has + 过去分词，be 动词的现在完成时也是这样；
been
v.曾经;曾经到过(某地)；
are的过去分词;be的过去分词；
has
有;have 的第三人称单数现在时形式

扩展资料

　　Only time will tell if the treatment has been successful.

　　只有时间才能证明这种疗法是否成功。

　　The system has been in operation for six months.

　　这个系统已经运行六个月了。

　　The company has been investing in new plant and equipment.

　　这家公司一直在投资购置新机器和设备。

　　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。

　　Digital television has been around for some time now.

　　数字电视已经面市一段时间了。