has been 加过去式是什么时态
回答
爱扬教育
2022-03-19
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例句：
The committee has been dissolved.
委员会被解散了。
Fighting has been ferocious.
战斗一直很激烈。
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。