怎样区分过去完成进行时和现在完成时是什么意思 怎么用啊我知道形式 但分不清用法
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/03 04:27:23
![怎样区分过去完成进行时和现在完成时是什么意思 怎么用啊我知道形式 但分不清用法](/uploads/image/z/5666462-62-2.jpg?t=%E6%80%8E%E6%A0%B7%E5%8C%BA%E5%88%86%E8%BF%87%E5%8E%BB%E5%AE%8C%E6%88%90%E8%BF%9B%E8%A1%8C%E6%97%B6%E5%92%8C%E7%8E%B0%E5%9C%A8%E5%AE%8C%E6%88%90%E6%97%B6%E6%98%AF%E4%BB%80%E4%B9%88%E6%84%8F%E6%80%9D+++%E6%80%8E%E4%B9%88%E7%94%A8%E5%95%8A%E6%88%91%E7%9F%A5%E9%81%93%E5%BD%A2%E5%BC%8F+%E4%BD%86%E5%88%86%E4%B8%8D%E6%B8%85%E7%94%A8%E6%B3%95)
怎样区分过去完成进行时和现在完成时是什么意思 怎么用啊我知道形式 但分不清用法
怎样区分过去完成进行时和现在完成时
是什么意思 怎么用啊
我知道形式 但分不清用法
怎样区分过去完成进行时和现在完成时是什么意思 怎么用啊我知道形式 但分不清用法
现在完成进行时(The present perfect progressive) 由have/has been +-ing分词构成;过去完成进行时(The past perfect progressive tenses)由had been +-ing分词构成.
现在/过去完成进行时的用法:
A.在某段时间内一直进行的动作
用现在完成进行时来强调动作在某段时间里的持续性.动作通常有”现在”的结果,要根据上下文来确定到”现在”为止,动作是否还在继续进行.例如:
She's been typing letters all day.
I've been sitting in the garden for an hour.
We've been living here for ten years.
Who's been eating my dinner?
同样,过去完成进行时表示在过去更早的时间内进行的动作,并对过去某一时刻产生结果.例如:
When I first met Ann, she had been working for Exxon for 7 years.
When she arrived I had been waiting for three hours.
I realized that I'd been overworking, so I decided to take a couple of days' holiday.
It had been raining for 3 hours before I shut the window.
"持续性动词"可用一般时形式,也可用进行时形式,唯一的区别是进行时更强调动作的持续性.例如:
We've been living here for ten years.
We've lived here for ten years.
She'd been working for Exxon for 7 years.
She had worked for Exxon for 7 years.
I had been waiting for three hours.
I had waited for three hours.
B.表示重复动作的现在/过去完成进行时
我们可以用完成进行时形式来表示现在或过去经常重复的动作.例如:
Jim has been phoning Jenny every night for the last week.
过去完成进行时 had been doing
现在进行时 be doing
过去完成进行时 had been+动词现在分词
现在完成时 have+动词过去分词