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Unit 3 Discovering Useful Structure教案
Teaching targets：
To learn the present perfect passive voice
To use the present perfect passive voice to do some exercises
To read a poem and learn to write your own poem
Revision
Do you know the structures and meanings of the present perfect tense and passive voice
现在完成时
have/has done + v-ed
表示说话时已经完成的动作，而且这个动作的结果对现在仍有影响;
表示动作发生在过去，但一直持续到现在，并且有可能继续持续下去。
Look at the sentences, pay attention to the red part.
Over time I have been changed a lot.
The results of their experiments have already been published.
The party has been planned since the new year.
The Present Perfect Passive Voice
Find the present perfect passive structures.
1. The problem has been discussed for 2 days.
2. Many new buildings have been built in the past few years.
3. Two novels have been written by him so far.
4. The computer has been used every day since I bought it.
5. The dirty clothes have already been cleaned.
6. Great changes have taken place in my hometown in the past 10 years.
现在完成时的被动语态意义及结构
表示动作发生在过去, 到现在已经完成或对现在产生的影响。动词和被修饰主语构成被动关系。
肯定式：have/has + been + v-ed
否定式：have/has + not + been + v-ed
一般疑问句：
Have/Has +主语+ been +v-ed
特殊疑问句：
疑问词+have/has +been+ v-ed
现在完成时的被动语态有两种情况：
1) 表过去开始的被动动作一直持续到现在，常连用的时间状语有：for+段时间，since +时间状语(从句)，these days, so far, up to now, in the last/ past few years等。 如：
This class have been taught by Mr. Brown for two years.
His Chinese has been improved a lot since he came to China.
Rowling’s novels have been translated into many foreign languages so far.
2) 表某被动动作对现在造成的影响或结果，常与already, yet, just, ever, never, recently等连用。如：
The bike has not been repaired yet.
I have already been introduced to Mr. Smith.
注意：有些动词没有被动语态, 如不及物动词happen, take place, break out等。
Complete the sentences.
1. Paper money ____________ (use) for over a thousand years.
2. — _____ the letter __________ (give) to Mr.
Black
— No. It’s still on the desk.
3. Great changes ___________ (take) place in my hometown and a lot of factories ____________ (set) up.
4. —How long _____________________ (employ) at this job
—Since 1999.
5. When and where to go for the on-salary holiday __________________ (not, decide) yet.
6. I like these English songs and they ______________ (teach) many times on the radio.
7. All the preparations for the task
__________________ (complete), and we’re ready to start.
Change the sentences into the present perfect passive voice.
They’ve built a kind of new PC with more functions.
A kind of new PC has been built with more functions.
1. I have downloaded the software to help my
phone battery last longer.
The software has been downloaded to help my phone battery last longer.
2. Someone has lost an identity card.
An identity card has been lost.
3. Have you confirmed the Wi-Fi password
Has the Wi-Fi password been confirmed
4. Have you pressed the button yet to copy the file
Has the button been pressed yet to copy the file
5. Has anyone made a comment about the online database
Has a/any comment been made about the online database
Find out the differences in meaning and function between the active and passive forms.
In an active sentence, the subject is doing an action to an object; they are used often as they are more direct.
In a passive sentence, the subject is having sth. done to it, and the doer of that action is not necessarily mentioned. They are often used when the doer of an action is unknown, not important, or preferred not named.
Look at the pictures, first list some key words, then make up sentences using the present perfect passive voice.
the buildings,
destroy,
Earthquake
The buildings have been destroyed by the earthquake.
Underline the use of the present perfect passive voice in the following poem. Then fill in the chart below.
Look at the way your face has been washed
Look at the way your teeth have been brushed
Look at the way your shoes have been cleaned
You’d better do them again.
Look at the way the flowers have been planted
Look at the way the grass has been cut
Look at the way the paths have been swept
Discussion
I hope that you’ll come here again.
Talk about something that has been done.
I recently went back to my hometown that I haven’t been to for a long time.
A new shopping mall has been built.
The road system has been changed.
The library has been moved.

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