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woulD hAvE DonE是什么时态

would have done 在语法时态上称作“过去将来完成时。” 语法教科书上对这个时态的解释是“表示从过去观点看将来某时某动作已完成”,并注明“这个时态用得相对比较少。”例句: I thought Sophia would have told you something. 我想索菲娅会已告诉...

比如如果当初他听了建议,他现在就不会有麻烦了.If he had listened to the advice,he wouldn't be in trouble now.他没有听从建议是过去的事情,所以从句用过去完成时表过去虚拟,而后面的主句是针对现在的情况,只用过去时wouldn't,事实上他现在有...

一个是现在完成时(表示动作在现在时间之前的完成),一是过去完成时(表示动作在过去的一个时间点之前就已经完成了)

have been done 是现在完成时中的被动结构。 其被动语态完整结构: 肯定式为:have/ has +been +done。 否定式为:have/ has +not +been +done。 现在完成时是“过去的动作或状态持续到现在并且已经完成”。在英语时态中,“时“指动作发生的时间,”...

have done是现在完成时,后面加doing 没见过。 have done和have been done有什么分别 一个是主动语态,一个是被动语态。 例如: 1、I have done my homework. 2、My homework has been done. 都可以解释为:我已经做完作业了。但是2中作业是被坐...

Please tell me if you would take him along, If take him come along, I'll put this news to Jimmy (真实条件句,用法,主将从现) If I hadn't met him yesterday,I wouldn't come here now. 从句与过去事实相反,主句与现在事实相反.

1 have ( has ) + done 现在完成时 ,had +done 是过去完成时 . 2 be ( am ,is are ) + done 是被动语态 3 have been done 是现在完成时的被动语态 4 have been doing 是现在完成进行时

没有矛盾的。 would/should/could/might是虚拟条件句的情态动词,都可以用的。 虚拟条件句的时态是不太难记的: 虚拟是什么,虚拟条件句中的结构:就是把“现在或将来”当成“过去”(一般过去时)讲;(“将来”还有:were to/should + V,)而把“过去...

现在完成时

have it done by tomorrow Have the cookies baked by tomorrow 是祈使句 因为句子的第一个词是动词 求采纳

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