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hAD DonE Doing

1、首先要区分has been done与 had been done的区别: have/has been done 是现在完成时的被动语态。表示某事被做,。 如:The problems have been solved.这些问题已经被解决了。 had been done 则是过去的过去,是过去完成的被动态时。(当你...

三者的区别在于时态不同,要根据想要表达的意思选择相应的时态 have been doing 是现在完成进行时,表示过去开始做而现在仍在做将来还有可能继续做的事情。 例句: I have been doing related researches. 表示我一直都在做相应的研究。 have do...

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...

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。

had been doing是过去完成进行时过去完成式和现在完成式的区别 (1)he has been worked in hospital 表示他过去在医院工作,现在有可能还在医院工作 (2)单数或第三人称时用has they have been worked in hospital (3)人称复指,第一二人称时...

现在完成时have done 有无明确时间状语 I have visited the temple. I visited the temple 3 days ago. 从过去发生延续到现在 She has lived here for 2 years . 一直延续到现在 She lived here for 2 months 2 years ago. 过去曾延续过 特殊用...

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 ...

had just done表示刚做完.......紧接着就发生了........were/was doing.....when当......的时候在做.........be about to do when当........的时候准备要做............

C 表达的意思是JANE在昨天这个时间点正在做什么,绝对是对的!我们老师讲过,我印象很深

表示某事被做,。如:Theproblemshavebeensolved.这些问题已经被解决了。hadbeendone则是过去的过去,是过去完成的被动态时。(当你想说发生在过去的两件事时,就要分清谁先谁后。先发生的用过去完成时,后发生的要用过去时)。如句子:Ihavebee...

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