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had done是什么用法
had
done
的
用法
和含义
答:
1、用法不同 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照。例句:I had finished my homework before my father came back.在我父亲回来之前,我已经完成了家庭作业。had been done 则是过去的过去,是过去完成的被动态时。例句:The rooms had been cleaned when...
Had
done是什么
时态
答:
过去完成时(The
Past Perfect Tense):表示过去的过去,其构成是had +过去分词。1、肯定句:主语+had+动词过去分词+其他。2、否定句:主语+had+not+动词过去分词+其他。3、疑问句:Had+主语+动词过去分词+其他?4、特殊疑问句:特殊疑问词或词组+had+主语+过去分词+其他?5、被动语态:主语+had(no...
虚拟语气中
had
done
与would
have
done,did与would do 的
用法
有何...
答:
当主句与if条件句中的动作都发生在过去时,主句谓语动词就要使用had done形式
,if条件句中谓语动词则要使用would have done形式 。e.g.If I had worked hard,I would have passed all the exams.当主句以及if条件句中的动作都发生在现在时,主句的谓语动词必须使用did(be动词用were),if条件句动词须...
had
done
和did do 的区别
答:
1 had
done 是过去完成时,表示动作发生在过去的过去,即该动作发生在过去的时间之前或者过去的动作之前
。例如:He had finished his homework before he got home。他在回家之前就写完了作业。完成作业发生在回家之前。而回家就已经使用一般过去时,表示过去发生的事情,所以完成作业使用了过去完成时。2 ...
何时用
had
done
?何时用
have
/has done?
答:
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
。have/has done是现在完成时,是相对于现在动作已经完成了,have done主语是第一人称和第二人称和第三人称复数,has done主语是第三人称单数。过去完成时(The Past Perfect Tense):表示过去某一...
had
done是什么
时态
答:
动词think,want,hope,mean,plan,intend等用
过去完成时
来表示过去未曾实现的想法,希望,打算或意图等。还可用在hardly...than…,lt was the fir...than...,lt was the first (second,etc) 。结构 1、主语+had+动词过去分词 2、肯定句:主语+had+动词过去分词+其他 3、否定句:主语+had+...
had
been done与had
done是什么
结构 他们的
用法
是什么
答:
had done
是过去完成时态
,表示过去某时间前已经发生的动作或情况,这个过去的时间可以用by,before等介词短语或一个时间状语从句来表示;或者表示一个动作在另一个过去动作之前已经完成.we had just had our breakfast when peter came in i had done sth=sth had been done by me 一般这两个时态有...
英语中has
done
,
had
done,being done,be done,
have
been done,had bee...
答:
built now by the government .be done是被动语态,比如:The classroom needs to be cleaned.have been done是现在完成时的被动语态 比如:These classrooms have been cleaned ,you can do something else .had been done是
过去完成时
的被动语态 ,用于过去时态,跟现在完成时的被动语态用法一样 ...
having
done
和
had
done的区别?
答:
"had done"
是过去完成时的形式
,表示在过去的某个时间点之前已经完成的动作,通常用于过去完成时的主句和状语从句中。例如:Peter told me that he had done his homework.(彼得告诉我他做完了作业。)总之,虽然这两种形式都是过去完成时的形式,但是它们语境和用法是不同的,需要根据上下文来确定...
had
done是什么
时态
答:
have sb/sth done.表示使……被……,让……做……。这是一种习惯用法。如:He had his leg broken.他伤到了腿。The teacher had Li Ming stood outside for he was late.老师因为李明迟到而让他站在外面。
现在完成时
(have/has done)①表示动作到现在为止已经完成或刚刚完成,强调对现在产生...
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