been的意思英语是:been作为系动词be的过去分词,有:在,存在;去过了的意思;be作为过去分词,用于各种完成时态,常用的句式如have/has been doing,be“是”的意思,按不同人称分am(第一人称),is(第三人称),are(第二人称)三种形式。
例句:Scientists think that there has been life on Earth for millions of years科学家认为生命存在于地球已经有几百万年了。
have been done现在完成时的被动形式,表示已经被完成
have been doing现在完成进行时,表示到现在为止仍然在进行。
The work has been done.工作已经被完成了。强调结果
They have been playing football for 3 hours.他们已经踢了3小时的足球了。可能还未结束。
I have been away from Paris for two weeks.我离开巴黎已经两星期了。
Flowers soon faded when they have been cut.花剪下后很快就会枯萎。