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hAvE DonE

have done 是从过去发生,截止到现在,比如i have done my homework,我已经写完作业了 ,表示我现在不用写作业了 而had done 是过去的过去发生,截止到过去,比如i had done my homework yesterday 我昨天就完成作业了 这句和 i did my homewor...

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,...

have sth done 请别人做某事 例句 We had the machine mended just now. 我们刚才请人把机器修好了. He has had his hair cut. 他(请人给他)理发了. have sb do sth 让某人做某事 The boss often has them work for 14 hours a day. 老板经常...

have done 是指已经做了什么“done”可以替换任何及物动词的过去完成时结构。 举个例子:I have eaten that apple. 我已经吃过了苹果 have been 是指状态,也可以曾经去过,但已回来 再举个例子:I have been in Beijing for 3 years. 我曾经在北...

have done现在完成时的主动形式 I have cleaned the room. have been done现在完成时的被动形式 The room has been cleaned by me.

一个被动一个现在完成时 We must see what can be done. 我们应该看看有什么能做的。 They are not duplicating what we have done. 不会重复我们已经做过的事情。

确实有四种用法。 Have sth. done可表示四种不同的语法意义: 1、(主语)请/派别人完成某事。如: We had the machine repaired. 我们请人把机器修好了。 2、(主语)完成某事(可能参与)。如: They are going to have (=got) some threes pl...

现在完成进行时1)从过去开始持续到现在并还可能持续下去2)现在看出明显结果 现在进行时1)此时此刻正在进行的动作2)现阶段经常发生的动作 现在完成时:1)过去发生的动作对现在造成的影响2)从过去一直持续到现在 下面是例子 最近和一个朋友...

在现在完成时态会用have done 举个例子,我已经写完了作业。I have finished the assignment.表示事情已经完成。

举个例子have my hair cut,这里cut是过去分词的形式。意思是让我的头发被剪。也就是剪发的意思。 have sb. do的意思说让某人做某事,比如说have student clean the classroom.让学生打扫卫生。 have done 和 have been done都是完成时态,前者是...

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