2019新人教高中英语必修二Unit3 The Internet--DiscoveringUseful Structures公开课学案.docx

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1、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：1. Learn the structure of the Present Perfect Passive Voice and its functions.2. Learn to change the sentences with the Present Perfect Passive Voice into the sentences with the Present Perfect Passive Voice.3. Learn to write

2、sentences with the Present Perfect Passive Voice flexibly according to the context.学习重难点：1. Learn the structure of the Present Perfect Passive Voice and its functions.2. Learn to change the sentences with the Present Perfect Passive Voice into the sentences with the Present Perfect Passive Voice.Lea

3、rn to write sentences with the Present Perfect Passive Voice flexibly according to the context.学习过程：Part 团 Observe and analyzeActivity 1 Read the pairs of sentences.Underline and compare the different verb forms.IJan/s life has been greatly improved by the Internet.The Internet has greatly improved

4、Jans life.3. 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.(Active have/has + v-ed PassiveActivity 3 The usage or functions1 .表示过去发生的动作对现在产生的

5、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 were 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

6、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 hasnt 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）.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

7、 4 Special cases1 .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

8、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.(x)This book has not been borrowed since last week.(V)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 b

9、ird 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 happ

10、ened around the dinner table. (V)Part 0 PracticeActivity 1 Change the sentences into the present perfect passive voice.Example:Theyve built a kind of new PC with more functions.玲A kind of new PC has been built with more functions.1.1 have downloaded the software to help my phone battery last longer.

11、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

12、Complete the notice with the correct forms of the verbs in brackets.(Workbook P75 Activity 4)Notice to parentsDear 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 experim

13、ent 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 i

14、nformation 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 SchoolPart 团 Language useActivity 1 Read the poem.Brainstorm and discuss how the present perfect passive voice is used.Look at the

15、way your face has been washedLook at the way your teeth have been brushedLook at the way your shoes have been cleanedYou/d better do them again.Look at the way the flowers have been plantedLook at the way the grass has been cutLook at the way the paths have been sweptI hope that youll come here agai

16、n.l.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 团 Share and showActivity 1 Share your poem with the classmates.Activity 2 Self-assessmentAssess your poem according to the checklist.V Have

17、 you used the present perfect passive voice in your writing?V Is your writing clear and logical?V Are all the words spelt correctly?V Is your handwriting easy to read?参考答案：Part 0Activity 1IJans life has been greatly improved by the Internet.The Internet hrs jreetly improved Jans life.2.Much has been

18、 written about the wonders of the World Wide Web.People have written much about the wonders of the World Wide Web.Activity 2have/has been+v-ec/Part 回Activity 11 .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 con

19、firmed?4 .Has the button been pressed yet to copy the file?5 .Has a/any comment been made about the online database?Activity 2As 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 slig

20、htly 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

21、are often used when the doer of an action is unknownznot important,or preferred not to be named.Activity 3have been given;has been made;has been supported;has been provided;has been provided;have been taught;have been helped;has been set upPart 0Activity 11 .Films,pictures,flowers,trees.2.Make,paint

22、zplant.Activity 2One possible poem:Look at the way the picture has been paintedLook at the way the film has been madeLook at the way the poem has been writtenNow think about what you could create.Look at the way the needy have been helpedLook at the way the river has been cleanedLook at the way the tree has been plantedNow think how to make the world a better place.