2020学年高中英语 Unit 3 Computers 3.4学案（含解析）新人教版必修2

Unit 3Computers Period 4语法专题课学习目标1.了解现在完成时的被动语态在具体语境中的运用。2.掌握现在完成时被动语态的结构和主要用法。3.使用现在完成时被动语态需要注意的问题。Step 1感受新知.Find and read the following sentences in your text and pay attention to the underlined parts.1.Over time I have been changed quite a lot.2.,I have been used in offices and homes since the 1970s.3.I never forget anything I have been told!4.Since the 1970s,many new applications have been found for me.5.I have also been put into robots and used to make mobile phones as well as help with medical operations.Translate the sentences into Chinese.1.Two windows have been broken.2.The car has not been repaired.3.Have the cars been repaired?No,they havent.4.How long has her work been finished?.Conclusion of the rules:1.现在完成时的被动语态的结构:2.现在完成时被动语态各种句式:肯定式否定式疑问式特殊疑问式step 2巩固运用.Fill the blanks1.由于大雪,高速公路已经被封闭。The freeway because of the heavy snow.2.对不起,先生,这次展览的门票已经全部卖完了。Sorry,sir,all the tickets for the exhibition .3.为了多种一些谷物,很多树被砍掉了。Large numbers of trees to grow more grain.4.我喜欢这部科幻电影,它已经在电视上播了三次了。I like this science fiction film and it three times on TV.Multiple choice1.His sister left home in 1998,and since.A.had not been heard ofB.has not been heard ofC.had not heard ofD.has not heard of2.The new dictionaries are very useful.They well and already.A.sell;have been sold outB.sold;had sold outC.sell;sell outD.are sold;have been sold out3.Can we sit at the table near the window?Im sorry,but it already.A.was takenB.tookC.has takenD.has been taken4.I want to buy this kind of cloth because I the cloth well.A.have told;washedB.have been told;washesC.have been told;washedD.was told;washedStep 3拓展.Correct the following sentences.1.A personal computer has bought by us.2.What has been happened to you?3.Our computer just has been joined to the Internet.4.The child has been taken good care by Grandma Wang all these years.5.How long has the book been borrowed?.Consolidation1.Fill in the blanks.(1)More than 5,000 used bikes (collect)since the two brothers set up the organization.(2)Since the cause of this disease (discover),now we need to develop the medicine to treat it.(3)Over the past ten years,this town (hit)twice by earthquakes.(4)Will the lecture be held at 4 oclock this afternoon?No.It (put off)till tomorrow afternoon.(5)Her novel is very popular among people of all ages;so far it (translate)into 25 languages.2.Multiple choice.(1)All the preparations for the task ,and were ready to start.A.completedB.completeC.had been completedD.have been done(2)How long at this job?Since 1990.A.were you employedB.have you been employedC.had you been employedD.will you be employed(3)When and where to go for the on-salary holiday yet.A.are not decidedB.have not been decidedC.is not being decidedD.has not been decided(4)Betty injured since last Saturday.A.has beenB.wasC.isD.has(5)That book into at least 20 foreign languages.A.has said to be translatedB.has been said to have translatedC.is said that it had been translatedD.is said to have been translated(6)Did you move into the new house? No.The rooms yet.A.were being paintedB.are paintingC.have not paintedD.have not been painted参考答案Step 1感受新知.1.两个窗子被打破了。2.汽车还没有修好。3.这些汽车修好了吗?不,还没有。4.她的工作完成有多久了?.1.构成:have/has been done2.现在完成时被动语态的各种句式:肯定式have/has+been+done否定式have/has+not+been+done疑问式Have/Has+主语+been+done?特殊疑问式疑问词+have/has+主语+been+done?Step 2巩固运用.1.has been closed2.have been sold out3.have been cut down4.has been broadcast.1.B2.A3.D4.BStep 3拓展.1.A personal computer has been bought by us.2.What has happened to you?3.Our computer has just been joined to the Internet.4.The child has been taken good care of by Gra