高中英语人教版 (2019)必修 第二册Unit 3 The internet学案设计
展开2019新人教高中英语必修二
Unit 3 The Internet--Discovering Useful Structures公开课学案
学习目标：
- Learn the structure of the Present Perfect Passive Voice and its functions.
- Learn to change the sentences with the Present Perfect Passive Voice into the sentences with the Present Perfect Passive Voice.
- Learn to write sentences with the Present Perfect Passive Voice flexibly according to the context.
学习重难点：
- Learn the structure of the Present Perfect Passive Voice and its functions.
- Learn to change the sentences with the Present Perfect Passive Voice into the sentences with the Present Perfect Passive Voice.
Learn to write sentences with the Present Perfect Passive Voice flexibly according to the context.
学习过程：
Part Ⅰ Observe and analyze
Activity 1 Read the pairs of sentences.Underline and compare the different verb forms.
1.Jan’s life has been greatly improved by the Internet.
The Internet has greatly improved Jan’s life.
2.Much has been written about the wonders of the World Wide Web.
People have written much about the wonders of the World Wide Web.
Activity 2 How do we form the present perfect passive voice?Fill in the blank.
Verb form
Activity 3 The usage or functions
1．表示过去发生的动作对现在产生的影响和结果，且这个动作与句子的主语有逻辑上的动宾关系。
I have been told the sports meet will be put off.
我已被告知运动会将要被推迟。(结果：现在我已经知道运动会要被推迟)
All the preparations for the task have been done，and we're ready to start.
这项任务的一切准备都已就绪，我们准备好要开始了。
(影响：我们现已具备开始的条件)
2．表示一个被动的动作或状态从过去开始，持续到现在，并且有可能继续持续下去。常与for＋时间段或since＋时间点等时间状语连用，此时，该被动语态的动词应使用延续性动词。
The machine has been repaired for two hours.
这台机器已被修了两小时了。(持续：两小时前开始修，现在可能已经修好，也可能没有修好，还要继续修)
She hasn't been heard from since then.
从那时候起，她就没来过信。(持续：从那以后，一直没收到她的信，以后也可能收不到)
3．在状语从句中，常用现在完成时的被动语态代替将来时的被动语态。
I will go home when my homework has been finished.
当我完成家庭作业时我就回家。(将来某时处于被完成的状态)
Activity 4 Special cases
1．现在完成时的被动语态中has/have been不可漏掉。
The plan has been studied by the experts for three times.
这个计划已经由专家研究三次了。
The dirty clothes have been washed.
脏衣服已经被洗好了。
2．现在完成时的被动语态强调过去发生的事与现在有联系；而一般过去时的被动语态所表示的动作只与过去有关，与现在没有关系。
The library has been built.
这座图书馆已经建好了。(图书馆可以用了)
The library was built last year.
这座图书馆是去年建成的。(图书馆现在是否能用是未知的)
3．含有非延续性动词，如begin，start，buy，borrow，finish等的现在完成时的被动语态的肯定式不能与表示一段时间的状语连用。这些动词的现在完成时的被动语态的否定式则可以与for或since构成的时间状语连用。
The work has been finished for two days.(×)
This book has not been borrowed since last week.(√)
4．动词短语用于现在完成时的被动语态时，动词后面的副词或介词不可漏掉或省略。
The injured bird has been looked after since it was saved.(after不可漏掉)
受伤的小鸟被救后一直被照看着。
5.并不是所有的动词都有被动语态。如happen, occur, take place, break out, belong to, cost, last等不及物动词或词组, 就没有被动语态。试比较:
Some of the best conversations have ever been happened around the dinner table. (X)
Some of the best conversations have ever happened around the dinner table. (√)
Part Ⅱ Practice
Activity 1 Change the sentences into the present perfect passive voice.
Example:
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.
__________________________________________________________
2.Someone has lost an identity card.
__________________________________________________________
3.Have you confirmed the Wi-Fi password?
__________________________________________________________
4.Have you pressed the button yet to copy the file?
__________________________________________________________
5.Has anyone made a comment about the online database?
__________________________________________________________
Activity 2 Can you find out the differences in meaning and function between the active and passive forms?
__________________________________________________________
Activity 3 Complete the notice with the correct forms of the verbs in brackets.(Workbook P75 Activity 4)
Notice to parents
Dear Parents,
We hope you will welcome this news.Almost 100 computers (give) to us by a local computer company since the end of last year.A decision_______(make) to begin a computer teaching experiment at our school.Our plan _________(support) with technical equipment and advice which (provide) by the City Information Technology Centre.Every teacher (provide) with a laptop since the beginning of this term.
More importantly,most of our courses (teach) using computers.We
__________(help) in our teaching by a lot of information from the Internet.Also,a new computer room (set up) in our school.We hope you will be happy with this exciting new development in our school.
No.8 Senior High School
Part Ⅲ Language use
Activity 1 Read the poem.Brainstorm and discuss how the present perfect passive voice is used.
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
I hope that you’ll come here again.
1.What are the subjects of your poems?
_________________________________________________
2.Can you list some verbs connected to the subjects?
_________________________________________________
Activity 2 Think of your own situation and write a similar poem.
_________________________________________________
Part Ⅳ Share and show
Activity 1 Share your poem with the classmates.
Activity 2 Self-assessment
Assess your poem according to the checklist.
√ Have you used the present perfect passive voice in your writing?
√ Is your writing clear and logical?
√ Are all the words spelt correctly?
√ Is your handwriting easy to read?
参考答案：
Part Ⅰ
Activity 1
1.Jan’s life has been greatly improved by the Internet.
The Internet has greatly improved Jan’s life.
2.Much has been written about the wonders of the World Wide Web.
People have written much about the wonders of the World Wide Web.
Activity 2
have/has been+v-ed
Part Ⅱ
Activity 1
1.The software has been downloaded to help my phone battery last longer.
2.An identity card has been lost.
3.Has the Wi-Fi password been confirmed?
4.Has the button been pressed yet to copy the file?
5.Has a/any comment been made about the online database?
Activity 2
As we can see in the above sentences,the object in an active sentence becomes the subject in a passive sentence.Both sentence types convey a similar meaning,but they are slightly different.For example,in an active sentence,the subject is doing an action to an object,while in a passive sentence,the subject is having something done to it,and the doer of that action is not necessarily mentioned.Active sentences are used more often,as they are more direct.Passive sentences are often used when the doer of an action is unknown,not important,or preferred not to be named.
Activity 3
have been given;has been made;has been supported;has been provided;has been provided;have been taught;have been helped;has been set up
Part Ⅲ
Activity 1
1.Films,pictures,flowers,trees...
2.Make,paint,plant...
Activity 2
One possible poem:
Look at the way the picture has been painted
Look at the way the film has been made
Look at the way the poem has been written
Now think about what you could create.
Look at the way the needy have been helped
Look at the way the river has been cleaned
Look at the way the tree has been planted
Now think how to make the world a better place.
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