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hAD BEEn DonE. hAD BEEn Doing. hAD BE DonE. hAD

had been done过去某个时间之前已经被做、被完成 had been doing过去某个时间之前已经在做或者继续在做 had be done是错的。时态和语态多不对。 had being done也是错误的。时态和语态都不对。 had纯粹的过去动作。

恩 我先来说一下例句 一。His trousers was been worn out. (这里的 过去分词是做表语,表明一种状态) was been done,而这里的逻辑主语又是他的裤子,所以用被动,是被他穿破的 二。 The bicycle is been riding by my brother now. (这里的 ...

先按照被动语态区分,havebeendone是被动,其它都是主动(bedone形式都是被动)havedone现在完成时,havebeendoing现在完成进行时(bedoing是进行时,而havedone是完成,be的过去分词是been,于是就是现在完成进行时)willhavedone由于有havedone...

先按照被动语态区分,have been done 是被动,其它都是主动(be done形式都是被动) have done 现在完成时,have been doing 现在完成进行时(be doing 是进行时,而have done 是完成,be 的过去分词是been, 于是就是现在完成进行时) will have...

be done 是表被动,被动语态 been done 是被动语态的完成时 前面会有has 或 have

have+V-ed表示某个动作已经发生完了。be done是表示被动,had been found是因为前面用的是he was told,表示这件事是以前发生的,所以这里也应该用被动的过去完成时态

表示时态时 doing的话只能是be+doing: 就是am/is /are+doing 表现在进行时,was/were+doing过去进行时 have been doing 现在完成进行时,had been doing 过去完成进行时,等,反正是有be动词在前面 done的话 be+done 表被动, have/had+done 表时态,...

.被动语态根据时态的不同,可分为以下几种类型: 一般现在时:am/is/are+done; 一般过去时:was/were+done 现在进行时:am/is/are+being done 过去进行时:was/were+being done 将来时 :will/would+be done,be going to be done, be to be don...

1 should have done 是含有虚拟条件句的 主句是第一人称时,并且是与过去相反的假设。 如: If I had met her yesterda, I should (=would) have told her about the news. should have done“本应该做”,含有“责备”之意。 You should have come ...

因为will和be going to 后面都要跟原型 be 的原型是be 而been是过去分词

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