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has been open 还是opened

has been open 还是opened

has been opened。

现在完成时,但一般都这么说have/has done,have/has been done,是现在完成时的被动语态

Digital television has been around for some time now.

数字电视已经面市一段时间了。

A new advance has been made in the control of malaria.

在控制疟疾方面已取得新的进展。

A new computer system has been installed at a cost of 80 000.

新的计算机系统已安装,费用为8万英镑。