内容正文:
Unit 3 The Internet
Discovering Useful Structures
现在完成时的被动语态
The present perfect passive voice
1
现在完成时结构
现在完成时概念
现在完成时
have/has+done
动词过去分词
被动语态
现在完成时的被动语态
表示 开始,一直持续到 的动作。
过去
现在
现在完成时概念1
past
future
now
for “持续”+段时间,如three years, a long time…
e.g. I have known you for a long time.
since“自从”+过去的时间点/动作
e.g. I have not seen him since we met last week.
A
B
时间状语
延续性动词
2 表示 发生的或 的动作对 造成的 。
过去
已完成
现在
影响或结果
现在完成时概念2
past
future
now
China's high-speed railways(高铁) have grown from 9,000 to 25,000 kilometres in the past few years. It's convenient for people to travel over long distances.
So far, the little boy has learnt 200 words. He can understand this story
例句
2 表示 发生的或 的动作对 造成的 。
过去
已完成
现在
影响或结果
already 已经(肯定句) yet 已经(否定句或者疑问句)
recently/lately 最近 since then 从那时起
ever since 自那以来 ever 曾经
so far 迄今为止 for a long time 很长一段时间
by now 到现在为止 in recent years 在最近几年里
in/during/over the past/last years在过去的几年里
现在完成时概念2
时间状语
past
future
now
现在完成时结构
现在完成时概念
现在完成时
have/has+done
动词过去分词
被动语态
现在完成时的被动语态
be done
现在完成时 + 被动语态 = ?
Mr Zhang has prepared the meat and vegetables.
The meat and vegetables have been prepared by Mr Zhang.
Read and pay attention to the words in red
The Internet has changed our life.
Our life has been changed by the Internet.
What can you find?
现在完成时的被动语态
The meat and vegetables have been prepared by Mr Zhang.
Our life has been changed by the Internet.
1.Jan's life has been greatly improved by the Internet.
2.Much has been written about the wonders of the World Wide Web.
3.Has the Wi-Fi password been confirmed by you?
4.The link has not been removed from the clothes. ...
What can you find?
has
been
done
肯定
has
been
done
疑问
has
not
been
done
否定
11
Who has been told
haven't been told
Have the children been told
12
三、现在完成时的被动语态的用法