高中英语 B3 Unit 3 The world of Science 第3课时-using language 课件

1、2021年春季深圳市线上课程高一英语深圳市教育科学研究院教学教材：外研版高中英语新教材必修第三册教学内容：Unit 3 The world of Science第三课时：Using language： Present perfect passive执教人：徐娅晖/深圳市宝安中学（集团）高中部March 22nd, 2021a. I guess you have been asked about the title of your book before.b. New inventions like 3D printers have been used to make replacement h

2、earts and bone parts. What has happened to “you” in sentence (a)?Group 1PeopleWho has used new inventions to make replacement hearts and bone parts in sentence (b) ?c I guess someone has asked you about the title of your book before.d People have used new inventions like 3D printers to make replacem

3、ent hearts and bone parts.a. I guess you have been asked about the title of your book before.b. New inventions like 3D printers have been used to make replacement hearts and bone parts. Compare them with the following sentences and answer the questions.present perfect active formpresent perfect pass

4、ive formGroup 1Group 2c I guess someone has asked you about the title of your book before.d People have used new inventions like 3D printers to make replacement hearts and bone parts.a. I guess you have been asked about the title of your book before.b. New inventions like 3D printers have been used

5、to make replacement hearts and bone parts. Why does the author choose to use the passive form instead of the active?present perfect active formpresent perfect passive formGroup 1Group 2To emphasize the object: “you” and “new inventions”.被动语态的使用情况：1. 不知道或者没有必要说明动作的执行者是谁； Such books have been written

6、for children. 2. 强调动作的承受者，而不是动作的执行者； All the products have been tested.3. 动作的执行者很模糊; The letter has been opened.4. 有时候为了礼貌的需要，避免说出动作的执行者。 They have been told many times not to make noises.Now lets read more examples.How many books has J.K. Rowling written?J.K. Rowling has written seven books.Seven b

7、ooks have been written by Rowling.Workers have built the house since years ago.The house has been built by workers since years ago.The buildings have been destroyed in the earthquake.The earthquake has destroyed the buildings.A lot of trees have been planted in our country.Present perfect passive现在完

8、成时的被动语态内容要点1. 概 念2. 构 成3. 用 法4. 注 意have/has been done强调一个发生在过去的被动动作。表示动作已经完成，对现在造成的影响或结果；主语为动作的承受者，与谓语动词是被动关系。(1)The door has been locked.(2)These flowers have been watered, and you can go home.(3)Our classroom has been cleaned, so you neednt clean it now. So even the olive wreath (橄榄枝花环) has been r

9、eplaced!1.肯定式：have / has + been + done2.否定式：have / has + not + been + doneAn opinion is what someone believes is true but has not been proved. 构成3.一般疑问句: 需将_提到主语的前面。(1) Has his bike been repaired? (2) Have they been notified about it?4. 特殊疑问句：提问主语：提问其他：have / has疑问词 + have / has + been + done？(1) Wh

10、o has been invited? (2) How many buildings have been built in this school?特殊疑问词 +一般疑问句？1. 强调动作或状态始于过去，持续到现在，并对现在造成某种影响。常与for或since引导的时间状语连用，或用于“how long.”句型中。(1) The machine has been repaired for two hours.(2) How long has the car been repaired?2. 用在时间和条件状语从句中，表示将来某时刻已完成的动作。Well start as soon as the

11、 work has been finished.用法及注意事项3. 副词的位置often, usually, always, never, hardly, seldom等副词置于have / has和been中间。(1) Such a man has hardly been believed.(2) The machine has already been repaired.4.不及物动词（词组）如 happen, take place, die, appear 没有被动语态，而不及物动词加介词或者副词构成的短语，相当于及物动词，可以用于被动语态。注意介词和副词不能丢掉。e.g. 孩子们这些年

12、被王奶奶照顾得很好。 The child has been taken good care of by Grandma Wang all these years.5. 非持续性动词，如 come, go, start, begin, leave, arrive, reach, get, marry, die等现在完成时的被动语态不能和表示一段时间的状语连用。若要表达相应意思，需改动词或时态。(1) The new car has been kept for a month.(buy)(2) How long has the meeting been on?(begin)但这类动词的否定式可表示

13、动作的持续过程，可与since或for构成的时间状语连用。This dictionary has not been borrowed since last week.1. It is difficult to figure out a global population of polar bears as much of the range has been poorly studied. (2019全国卷语法填空) 由于大部分有关北极熊生活范围的研究还很少, 所以很难统计出全球北极熊的数量。2. A 90-year-old has been awarded “Woman Of The Yea

14、r” for being Britains oldest full-time employee-still working 40 hours a week. (2019全国卷语法填空) 一位90岁老人因为是英国最年长的全职雇员而被评为“年度女性”。她仍然一周工作40个小时。直击高考3. Wildlife has been greatly threatened in the modern age. (2019江苏完型填空) 在现代, 野生动植物受到极大程度的威胁。4. (2017全国卷) Sarah _ _ (tell) that she could be Britains new superm

15、odel, earning a million dollars in the next year. has been told/was told Within the next 80 years, our lives may be changed beyond recognition by 3D printing. It has already affected many things in our lives, right down to the food we eat. For instance, some restaurants in London have served 3D-prin

16、ted hamburgers to customers. But perhaps the most significant success that people have achieved to date is in medicine. They have made human body parts, including a beating heart, with 3D printing technology. And it is not just humans who are benefiting- in Brazil, people have given a new 3D-printed

17、 shell to a turtle injured in a forest fire!Rewrite the underlined parts using the present perfect passive. P29 Within the next 80 years, our lives may be changed beyond recognition by 3D printing. Many things have already been affected in our lives, right down to the food we eat. For instance, 3D-p

18、rinted hamburgers have been served to customers some restaurants in London. But perhaps the most significant success that has been achieved to date is in medicine. Human body parts, including a beating heart, have been made with 3D printing technology. And it is not just humans who are benefiting- in Brazil, a new 3D-printed shell has been given to a turtle injured in a forest fire!Rewrite the underlined parts using the present perfect passive. P29Imagine you are Dr Moore. Look at the pictures an