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hAD DonE

have\has done 叫现在完成时。表示动作发生在过去,对现在有一定的影响。通常与时间段连用。 如:I have finished my homework. / It has rained for three days. had done 是过去完成时。表示动作发生在过去的过去。通常句中有过去时间状语作参...

I had done my work when you went away. 当你走的时候,我已做完了工作. He told me he had done wrong,when it comes to emotional and cry Department simmer. 他跟我讲述他以前做过的错事,说到动情处想哭又拼命忍住. 用句型 had just done …w...

have done 是现在完成时,表示对现在的影响 had done是过去完成时,表示过去的过去

第一个had 是指时态:had done 过去完成式 第二个had是使役动词:have sth done让某事被做(固定用法) 之所以第二个have在这里用had,是因为过去完成时的时态,要求had done所以用had had. 例:My sister had had the computer repaired. 直面...

Answer:试比较 (1)一般现在时: I buy a car today. 我今天买了一辆车.(强调的是当前的行为) (2)现在完成时: I have bought a car. 我买了一辆车.(造成的影响就是买了一辆车,并且目前正在使用中) (3)过去时: I bought a car . 我曾经买过一辆车.(...

整个句子的时态不确定,表面看起来像一般过去式(你这句子貌似有点问题。。应该是He is/was/has been said to have had his car lost,整个句子时态由前面的be动词决定) 但后半部分“have had his car lost”是现在完成时。。。 have his car los...

had done是过去完成时,如果动作发生在相对于过去某一时刻的过去,在过去某时刻已经完成了,就用had done,例如“我昨天三点到家时,露西已经睡着了”对于过去某一时刻的昨天三点,已经睡着了,也就是露西睡着时比昨天三点还早,是昨天三点的过去,...

条件状语从句对过去的虚拟结构是从句用过去完成时had done, 主语用would have done的形式,并没有从句If用 would have done的形式。 例1:If Mary had studied hard, she would have passed the final exam. 如果Mary 努力学习的话,她期末考试...

这个问题涉及到两个不同的语法点 having done 涉及到的语法点是高中的现在分词 had done 是过去完成时态 当然 这是有区别的 这个区别在用法上 举个例子 做完作业 我从痛苦中解脱了 having finished the homework ,i'm totally free from suffer...

对,但不全

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