英语必修 第三册Unit 3 The world of science教学ppt课件

这是一份英语必修 第三册Unit 3 The world of science教学ppt课件，共26页。PPT课件主要包含了People，被动语态的使用情况，have has，用法及注意事项，直击高考，was told，现在完成时的被动语态等内容，欢迎下载使用。

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 wrld f 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, 2021
a. I guess yu have been asked abut the title f yur bk befre.b. New inventins like 3D printers have been used t make replacement hearts and bne parts.
What has happened t “yu” in sentence (a)?
Wh has used new inventins t make replacement hearts and bne parts in sentence (b) ?
c I guess smene has asked yu abut the title f yur bk befre.d Peple have used new inventins like 3D printers t make replacement hearts and bne parts.
present perfect active frm
present perfect passive frm
T emphasize the bject: “yu” and “new inventins”.
1. 不知道或者没有必要说明动作的执行者是谁； Such bks have been written fr children. 2. 强调动作的承受者，而不是动作的执行者； All the prducts have been tested.3. 动作的执行者很模糊; The letter has been pened.4. 有时候为了礼貌的需要，避免说出动作的执行者。 They have been tld many times nt t make nises.
Nw let’s read mre examples.
Hw many bks has J.K. Rwling written?
J.K. Rwling has written seven bks.
Seven bks have been written by Rwling.
Wrkers have built the huse since years ag.
The huse has been built by wrkers since years ag.
The buildings have been destryed in the earthquake.
The earthquake has destryed the buildings.
A lt f trees have been planted in ur cuntry.
Present perfect passive现在完成时的被动语态
1. 概 念2. 构 成3. 用 法4. 注 意
have/has been dne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 dr has been lcked.(2)These flwers have been watered, and yu can g hme.(3)Our classrm has been cleaned, s yu needn't clean it nw.
S even the live wreath (橄榄枝花环) has been replaced!
have / has + been + dne
have / has + nt + been + dne
An pinin is what smene believes is true but has nt been prved.
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 ntified abut it?
4. 特殊疑问句：提问主语：提问其他：
疑问词 + have / has + been + dne？
(1) Wh has been invited? (2) Hw many buildings have been built in this schl?
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fr或since引导的时间状语连用，或用于“hw lng...”句型中。
(1) The machine has been repaired fr tw hurs.(2) Hw lng 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。
We'll start as sn as the wrk has been finished.
3. 副词的位置ften, usually, always, never, hardly, seldm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. 孩子们这些年被王奶奶照顾得很好。 The child has been taken gd care f by Grandma Wang all these years.
5. 非持续性动词，如 cme, g, 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 fr a mnth.(buy)(2) Hw lng has the meeting been n?(begin)
但这类动词的否定式可表示动作的持续过程，可与since或fr构成的时间状语连用。
This dictinary has nt been brrwed since last week.
1. It is difficult t figure ut a glbal ppulatin f plar bears as much f the range has been prly studied. (2019全国Ⅰ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-ld has been awarded “Wman Of The Year” fr being Britain's ldest full-time emplyee-still wrking 40 hurs a week. (2019全国Ⅱ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。
3. Wildlife has been greatly threatened in the mdern 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Ⅲ) Sarah ______________ _______ (tell) that she culd be Britain's new supermdel, earning a millin dllars in the next year.
has been tld
Within the next 80 years, ur lives may be changed beynd recgnitin by 3D printing. It has already affected many things in ur lives, right dwn t the fd we eat. Fr instance, sme restaurants in Lndn have served 3D-printed hamburgers t custmers. But perhaps the mst significant success that peple have achieved t date is in medicine. They have made human bdy parts, including a beating heart, with 3D printing technlgy. And it is nt just humans wh are benefiting- in Brazil, peple have given a new 3D-printed shell t a turtle injured in a frest fire!
Rewrite the underlined parts using the present perfect passive.
Within the next 80 years, ur lives may be changed beynd recgnitin by 3D printing. Many things have already been affected in ur lives, right dwn t the fd we eat. Fr instance, 3D-printed hamburgers have been served t custmers sme restaurants in Lndn. But perhaps the mst significant success that has been achieved t date is in medicine. Human bdy parts, including a beating heart, have been made with 3D printing technlgy. And it is nt just humans wh are benefiting- in Brazil, a new 3D-printed shell has been given t a turtle injured in a frest fire!
Imagine yu are Dr Mre. Lk at the pictures and tell the plice abut the damage and lss t yur lab. Use the present perfect passive where apprpriate.
My lab has been brken int. It was really in a mess. The thief ruined everything. My files recrding varius imprtant experiments has been taken away. My cmputers n the platfrm have been stlen. The experiment apparatus have been brken up. The rbt has fallen dwn and been brken int parts. All f these annyed me a lt.
1. 强调过去的动作对现在的影响或结果；2.主语为动作的承受者，为被动关系。
肯定式否定式一般疑问句特殊疑问句
1. 动作或状态始于过去，持续到现在，并可能持续。2.可用在时间和条件状语从句中，表示将来某时已完成的动作。
副词的位置不可分割和省略动词短语的介词或副词。表短暂意义的动词不能和表一段时间的状语连用