was been done是什么时态
没有was been done这种形式。“was done”是一般过去时的被动语态was/were done之一。表示一个过去发生的动作,而被动语态是表示主语被怎样,其中主语是动作的被执行者即动作承受着。“have been done”,表示的是现在完成时的被动语态。
过去完成时
1.概念:以过去某个时间为标准,在此以前发生的动作或行为,或在过去某动作之前完成的行为,即“过去的过去”。
2.时间状语:before,by the end of last year(term,month…),etc.
3.基本结构:had + done.
基本结构:主语+had+过去分词(done)
①肯定句:主语+had+过去分词+其他
②否定句:主语+had+not+过去分词+其他
③一般疑问句:Had+主语+过去分词+其他
④特殊疑问句:特殊疑问词+一般疑问句
4.否定形式:had + not + done.
5.一般疑问句:had放于句首。
6.例句:As soon as we got to the station,the train had left.
By the end of last month,We had reviewed four books
7.用法
(1)过去完成时表示过去某时之前结束的动作或状态
When he got there,the train had already left.他到了那儿时火车已经离开了。
Ina realized she had made a mistake.艾娜意识到她犯了个错误。
(2)过去完成时与when等从句连用
had+just / barely / hardly / scarcely+done...when...,no sooner...than... 是表示“刚……就……”或“不等……就……”的固定句型。如:
No sooner had we left the house than it began to rain.我们刚离开家就开始下雨了。
I had not gone much farther before I caught them up.我没有走多远就赶上他们了。
(3)过去完成时表示持续到过去某时之前的动作或状态
We had finished the work by nine o'clock yesterday.昨晚九点前我们已完成了工作。
The company had completed the project by the end of 1999.到1999年底公司已完成了那个项目。