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I have flown this dart as an example of present perfect
我用这个达特纸飞机作为现在完成时的例子
We aren't told exactly
我们没有提及过它
when the dart was flown
具体是什么时候飞过大峡谷的
Just it have happened nine times
只是说了它飞过九次
Listen for this and other examples
再听一遍无字幕的情景对话
As you watch the dialog again without subtitles
并寻找其它的例子
Now we'll learn about "for" "since " and "ago"
下面我们开始学习for since和ago
And the present perfect continuous
以及现在完成进行时
We use the present perfect continues tense
当某个行为延续时间较长或是重复性的
when an action is long or repeated
我们就要用现在完成进行式
Jim has been trying to pass his music exam for weeks
吉姆为了通过音乐考试努力了好几个星期
When an action is a progress but not complete
当某个行为是一项尚未完成的成就
I've been doing my homework
我在做作业
For something that is happening now for a short time
或者说正在发生的短期事件
Anna has been reading in the library
安娜在图书馆里看书
When we ask a question
我们提问的时候
we move "has" or "have" to the beginning of the sentence
要把has或have移到句子开头
Have you been doing your homework?
你做了作业吗？
Has Anna been reading in the library?
安娜在图书馆里看书吗？
We form the negative by using "haven't" or "hasn't"
通过使用haven't或hasn't来达成否定形式
I haven't been doing my homework
我没有做我的作业
Anna hasn't been reading in the library
安娜没有在图书馆里看书
Read the subtitles of our last dialog
下面朗读我们最后的情景对话中的字幕
To find an example of how the present perfect continues is used
并找出现在完成进行时的使用范例
I've been making this for hours!
我画这个好几个小时了！
I've been working on mine since before you were even born
我在你出生之前就开始画了
No you haven't. It was ages ago when I was born
你才没有，离我出生都过了好几年了
I've been making mine forever
我永远都是在画这个
No you haven't. You're only four years old
你才没有，你才四岁而已
I've been making mine since creation
我从这玩意制造出来开始就在画这个了
You just started on it five minutes ago!
你才刚画了五分钟而已！
There is something I want to give you
我有个东西想给你看
What is it?
是什么？
A crayon
蜡笔
I hope you were reading out loud
我希望你有在大声朗读
Did you see that has or have
你有注意到has和have
were moved to the beginning of the question?
被移到了句子开头吗？
Here is the present perfect continues in action again but without subtitles
再听一遍无字幕的对话
To find an example of how the present perfect continues is used
看看现在完成进行时的行为
Well, that is all we have time for today
好了，今天 就讲这么多了
If you like more information about the certificate
如果你对强化英语认证系列课程
and intense English language
有兴趣了解更多的话
Call the team and the Southern Institute of technology
请致电制作团队和南方理工学院
on 0800 SIT 2 LRN
0800 ST 2LRN
See you next week
下周见
This program has been brought to you by the Southern Institute of Technology
本课程由国立南方理工学院为您呈献
itu.sit.ac.nz
网址为itu.sit.ac.nz
