作业帮had been doing 和 had done的区别
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had been doing 和 had done的区别
had been doing 和 had done的区别
had been doing 和 had done的区别
had done 是过去完成时,指发生在早于过去某个时间的行为,该行为到那个时间业已结束.had been doing 是过去完成进行时,同样指发生在早于过去某个时间的行为,但这个行为到那个过去时间还在进行.
例如：
By He had done the work by ten o'clock this morning.到今天上午十点钟,他已完成了这项工作.
He had been doing the work by ten o'clock this morning. 到今天上午十点钟,他还在干着了这项工作.
He could remember a time when he had worked like that himself.他还能记得自己一度工作起来的那个样子
He could remember a time when he had been working like that himself.他还能记得自己当时一直在工作的那个样子.
had done是过去完成时
had been doing是过去完成的， 但是到现在还在做的
..进步和健康
had been doing 和had been done有什么差别
had been doing 和had been done有什么差别?
had been doing 和 had done的区别
had been doing 是什么时态?
had been doing是什么时态
had been doing是什么时态
had been doing是什么是时态?
had been doing是主动还是被动
was doing、had been doing和had been done都有什么区别?was doing和had been doing不是都是指过去一段时间做的事情吗?他们俩有什么区别吗?had been doing 和 had been done 又有什么区别. 话说我在写英语句子时不
Had been telling和 Had told
求问had gone和had been
英语时态区分have done .have been doing.had done.had been doing.有什么区别.
had been
had been和had been to的区别
英语,has been和 had been
have been doing,had been doing,will have been down是什么
had been looking forward后面加to do 还是doing?
had been doing是什么语法?举个例子~有have/has been doing的说法吗?