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has\have done是什么时态;had done 又是什么时态?

分类: 作业答案 • 2021-12-20 03:35:02

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答

has\have done是现在完成时态（过去发生的动作对现在造成的影响）;had done 是过去完成时态（过去发生的动作对过去造成的影响）

=英语一直不好的说 be后面加一个动词的过去式就是表被动?然后一般过去时的被动形式就是be+done吧?was/were +动词原形就是过去干什么什么,那was /were+动词的过去式有什么什么意思?be+动词过去式又是什么意思的说?have been done 的被动式是什么
What ____ Annie ____ by the time she was ten?A. was; learningB. did; learnC. has; learnedD. had; learned请说明原因(详细解释下by在这里是什么意思,表示的什么时态)
语法中,现在分词,过去分词作定语的用法!1-什么情况下分词不能与定语从句互换?我查到的例子中有这样一条规则：如主句谓语是现在时,从句谓语事过去时时.例如：The foreigner who visited our class yesterday is from Canada.(≠The foreigner visited our class yesterday is from Canada.)但是之后看的很多例句把这条推翻了,所以这条规则更详细一点说,是不是区别在延续性/非延续性动词上了?2-过去分词（不及物的）作定语表示完成,那么此时和现在分词的having done有什么区别?（除了having done不能作定语）,也就是说,过去分词表示的完成（have done）时态上怎么看?3很多语法书上写,特定的不及物动词可以有v-ed形式做定语,这个"特定"怎么定义?我怎么样就可以知道哪个可以哪个不可以?
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何时用apear to do,何时用apear to have done?分别要是什么时态背景?请举例说明,
How long have you had a stomachache?这是什么时态
have / has+动词原形和 had+动词原形各是什么时态
to have done和having done,to do和doing用法有什么区别?记住是时态用法区别?
ENGLISH小难题奥!急救1.l don't think Jim saw me ; he _____ into space.a.just stared b.was just staring c.has just stared d.had juet stared (为什么不是过去式奥?）2.The prices ______going up all time in past few years ,so complaints can be heard everywhere.a.keep b.kept c.have keot d.are (什么时态?）3.lt is only natural that ______.a.the boy did such a thing b.the boy has done such a thing c.the boy would do such a thingd.the doy have done such a thing (b为什么错啊?）
Neither he nor_____have finished the experiment.A she B her C me D I (用啥格阿...晕了Road accidents are____to happen in such snowy weather.A able B likely C impossible D hardly (A和B有什么区别的?The person___the songs can speak seven languages.A translated B translating C to translate D translate (完全看不出时态..More than fifty years____since they got married.A have passed B has passed C passed D had passed (跟since有关?
Had done是什么时态He had his wallet stolen on the bus这个是什么解释
would do和had done的区别.I wouldn't feel anything good about my life,is that what you wanna hear me say?这句里的wouldn't feel可以用hadn't felt代替吗?两者意思上有什么区别?

has\have done是什么时态;had done 又是什么时态?

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