作业帮英语 完成时It has been raining for three hours.为什么要加been?加been不是表
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/16 01:28:05
英语 完成时
It has been raining for three hours.
为什么要加been?加been不是表被动么?
It has been raining for three hours.
为什么要加been?加been不是表被动么?
这是个现在完成进行时的句子,高一要学的一个时态, 结构是：have/ has been + 现在分词（doing), 表示动作一直在持续,如： I have been teaching English for about twenty years.我已经教英语教了大约20年了
It has been raining for tree hours.雨下了三个小时了（ been是过去分词,在这里不表示被动,现在完成进行时在这里说明：雨没有停,依然在下）
It has been raining for tree hours.雨下了三个小时了（ been是过去分词,在这里不表示被动,现在完成进行时在这里说明：雨没有停,依然在下）
英语 完成时It has been raining for three hours.为什么要加been?加been不是表
there has been...为什么要加been?
The ice has been melted .为什么这个现在完成时要加been,been不是被动语态吗?
英语完成时态的构成请问英语完成进行时态的构成为什么不是have,has加现在分词呢?为什么要加been呢?
It＿for three hours.When will it stop?A.has rained B.has been
He has been there for six months.has been后面为什么不加to?还有为什么要加fo
His father has been dead for two years为什么用been?been不是表被动吗?
It has kept (raining) for two hours.为什么rain要加ing?
It has been three hours since he left his office.把has been 换
It has been raining for nearly a week
the meeting has been continued for three hours.哪里错,为什么?
the meeting has been continued for three hours.哪里错,为什么