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had done是什么时态
have
had是什么时态
?
答:
“have had”即“have
done
”表示现在完成时,
had是have
的过去分词形式,这里只不过刚好那个done又是have而已。例句中植物的基因到现在时刻已经得到了改变,基因得到改变这个动作已经到现在完成了,所以用现在完成
时态
。现在完成时的用法:主语+have(has)+过去分词(done)1、现在完成时用来表示现在之前已发生...
Have
/Has been
done
与Have/Has done 到底有
什么
区别啊
答:
Have
/Has been done 与Have/Has done 的区别只在语态使用的区别,如下:1、
have
been
done是
现在完成时的被动语态,表达的状态是一种被动的,一般主语用物。如:His homework has been finished before he went home.他的作业在回家之前就被完成了。2、have done是现在完成时的主动语态,表达的状态是...
英语六大
时态是什么
?
答:
一、一般将来时:概念:表示将要发生的动作或存在的状态及打算、计划或准备做某事。时间状语:tomorrow,next day(week,month,year…),soon,in a few minutes,by…,the day after tomorrow,etc.基本结构:主语+am/is/are+going to +
do
;will/shall + do.二、一般现在时:概念:经常、反复...
have
been
done
这个
是什么时态
的结构
答:
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,”态“指动作的样子和状态。
had
been
done是什么时态
答:
had
been
done是
过去完成时的被动语态。过去完成时由助动词had加上动词的过去分词构成。过去完成时表示在过去某个动作或某个具体时间之前已经发生、完成的动作或状态,如:The game had already begun when we arrived at the stadium.They had known each other for ten years when they got married....
have
done
和
had
done的区别
答:
3、He said I must
have
done
something bad to deserve it.他说我肯定是罪有应得。4、You shouldn't have done it without consulting me.你不该不和我商量就做了这件事。5、He was so desperate for a job he would have done anything.他当时太想找份工作了,
什么
事都愿意干。
had
done...
by the time
什么时态
答:
by the time的用法
时态
是:1、表示过去的动作:主句用
had
done
+by the time+从句用一般过去时时态。We had already left by the time they arrived.那天他们到的时候,我们已经先走了。2、表示将来的时态:主句用will
have
done+by the time+从句用一般现在时态。We will have already left by the...
had
been
done是什么时态
答:
have
/has been
done 是
现在完成时的被动语态。表示某事被做, 如:The problems have been solved.表示这些问题已经被解决了。
had
been done 则是过去的过去,是过去完成的被动态时。(当你想说发生在过去的两件事时,就要分清谁先谁后。.先发生的用过去完成时,后发生的要用过去时。如:The ...
英语句子中出现“by the time”时,谓语动词应用
什么时态
?
答:
by the time+过去时间,谓语动词用过去完成时,就是
had
done
by the time+未来时间,谓语动词用将来完成时,就是will
have
done只有这两种情况
倒装句中
时态
怎么判断,
什么
时候用did.
Had
答:
did是过去式,
had
表示过去的过去,是过去完成时,主要是用来构成特殊句型,比如说no sooner had
done
.. than did... hardly/scarcely had done ... when did ...
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