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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...

have been doing 是现在完成进行时,表过去发生的动作一直在进行到现在。 We have reading an interesting book since last week. have done 是现在完成时,表在过去发生的动作对现有影响。 So far I have been to Beijing twice. had done 是过...

因题干条件不完整,缺少文字,不能正常作答。

have been doing 是现在完成进行时,表过去发生的动作一直在进行到现在. We have reading an interesting book since last week. have done 是现在完成时,表在过去发生的动作对现有影响. So far I have been to Beijing twice. had done 是过去完...

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。

1一直到过去某一时间为止,仍旧在继续进行的动作. They had been searching for six months when they found the treasure.当他们发现这些宝藏的时候已经寻找了六个月了。 他们发现这些宝藏是过去,寻找这个动作时过去的过去并且一直持续到他们发...

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...

你好 为你的解析如下: have had 就是你已经有了什么 比如 I have had this dictionary since I was little. have done 就是你做过什么 比如 I have made a big buzzer shot. 我曾经打球时绝杀过。 had done 就是针对于过去的过去,理解起来就是...

to do 在开头 1.做主语 To win this competition is our goal. 赢得比赛是我们的目标。 2.做状语,表目的 To win this competition, we must fight. 要赢得比赛,我们必须努力奋斗。 doing在开头: 1.做主语 Winning this competition is the bi...

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