1、九上Unit9Whenwasitinvented第2课时SectionA1a2cUnit 9 When was it in ve nted? Section A(1a-2c)Lear ning goals:Talk about the history of inven ti ons and their uses by using the passive voice.Step 1 Preview如何理解被动语态？为取胜更清晰、更深刻地理解被动语态的含义，可以将主动语态和 被动语态的句子结构进行比较。主动语态： 主语+ 谓语动词 + 宾语 +其他成分被动语态： 主语+ be +过去分词| + by
2、 +宾语 +其他成分女口： Many people speak English.被动语态Englishis spoken by many people.一.专项训练1. The bridge (build) by the farmers themselves in 1982.2.All the books will (send) to the children who live in thesmall village.3.Keys used for the doors.（ open）4.My mother told me that my homework must （finish ） onti
3、me.5.When the car ?（invent）答案： 1. was built 2. be sent 3. are, opening 4. be finished 5. was invented通过这一环节的复习， 使对被动语态遗忘或掌握不好的学生又能很好 地掌握和运用。二 Translate1.汽车是何时发明的？它是在 1885 年发明的。2.电动拖鞋是何时发明的？它们是去年发明的。3.他们是谁发明的？它们是朱莉 .汤姆森发明的。4.他们是用来干什么？它们是用来在黑暗中照明的。答案： 1._When was the car invented? _It was invented in
4、1885.2._When was electric slippers invented? _They were invented last year.3._Who were they inven ted by? _They were inven ted byJulie.Thomps on.4._What were they used for? _Thee used for see ing in the dark.这些是本课甚至是本单元的基本句型。通过检测可看出学生的预习情况，利于下一步教学，同时给没预习好的同学一次学习的机会。Step 2 Prese ntatio nLook at the t
5、hings on page 68. Whe n were they inven ted? Number them in the order of their inven ti on.A: I thi nk the teleph one was inven ted before the car.B: Well, I thi nk the telepho ne was inven ted after the car.TV 1925 John L. Baird ScottishA: I think the TV was invented before the computer.B: Well, I
6、think the TV was invented after the computer.Telephone 1876 A.G. Bell AmericanT: Which on earth is right? Now let s look at 1b.利于图片很直观而且能引起学生注意激发学生的兴趣 。1.Listen and find the general idea.What are they talking about?A.They are talking about the car.B.They are talking about the computer.C.They are tal
7、king about the TV.D.They are talking about when some things were invented.1b listening and matching.Listen to the recording and match the inventions with the dates. Then read after the tape.The telephonewas invented in 1876.Cars were invented in 1885.The TV was invented around 1927.The hand-held cal
8、culatorwas invented in 1971.The personal computerswere invented in 1976.1c Doing pair workIn pairs, one covers the dates and the other asks him when the things in the pictures on page 68 were invented. Then change roles and practice againA: When was the telephone invented?B: I think it was invented
9、in 1876.A: When was the car invented?B: I think it was invented in 1885.A: When was the TV invented?B: I think it was invented around 1927.A: When was the hand-held calculator invented?B: I think it was invented in 1971.Now class, what re some other inventions? Whom are they invented by? What re the
10、y used for? Let s look at 2a.Step 3 Listening and matchingYou shall listen to the recording and number the inventions in the order that you hear them. Listen again and match the inventions with their inventors and uses.Role play the conversations using the information in the chart in the middle of p
11、age 69. Pay attention to the formation of passive voice.A: What are the shoes with adjustable heels used for?B: They are used for changing the style of the shoes.A: What are the battery-operated sneakers used for?B: They are used for seeing in the dark.A: What is the heated ice cream scoop used for?
12、B: It is used for scooping really cold ice cream.Fill in the blanks.B: What are those?G: Theyre battery- slippers.B: What are they used for?G: They are used for in the dark.B: Oh, thats cool! Who were they by?G: Julie Thompson. And look at this heated ice cream scoop.B: I know what it s for! It s us
13、ed for really cold ice cream.G: Right. It was invented Chelsea Lanmon.B: My favorite are those shoes heels. You knovyoucan move the heels . They were invented by Jayce Coziar andJamie Elsworth.G: And are they used for?B: Well, you can change the style of your shoes. You can make the shoesgo casual d
14、ressy.答案: operated/ seeing/ invented/ scooping/by/ with adjustable/up and down/what/from/to.进行听力模仿，感知英语发音特点，提高口语表过水平 . 学生间的对话练习和据听力原文填空很好地训练了学生的口语和阅读能力。翻译探究:1.Whe n was it invented?invent v.发明，创造 例如：He a new way of maki ng silk.他发明了一种制造丝绸的新方法。Do you know who computers?你知道谁发明的电脑吗？【拓展】（1）inventor n.发明
15、家，创造者，发明者 例如：Edison was a great .爱迪生是一个伟大的发明家。（2）invention n.发明（物），创造 例如：Edison had 1,093 .爱迪生有 1，093项发明。2.They resed for seeing in the dark它们被用于在黑夜里观看。be used for表示 被用来做 ”，介词for表示目的和用途，后面接名词或动词-ing形式。Wood can pape木 材可以被用来造纸。【拓展】含有be used的常用短语：（1） be used as表示 被用作 ”，介词as意思是 作为”的意思，其 后一般接名词，强调使用的工具及手
16、段。This book can a textbook这本书可以当作教科书来用。(2) be used by表示 被 使用”，by后接动作的执行者。This kind of machi ne farmers for gett ing in crops.3.Battery-operated slippers were inven ted by Julie Thompso 电池控制 的拖鞋是朱莉。汤普森发明的。operate v. 操作，作业【拓展】(1) operate v.操作，作业例如：Can you the computer?你会用电脑吗？(2)operate v.动手术，用于operate
17、 on sb.给某人做手术”。例如:The doctor will his mother at o nee.那位医生将马上为他的母亲动手术。(3)operate v.经营，管理 例如：The compa ny ten factories .这家公司经营着 10家工厂。(4)operation n.手术例如：She had for stomach她做过胃部手术。答案：1. has inven ted/ i nven ted/ i nven tor /inven ti ons2.be used for making/ be used as/ is used by3.operate/ operate
18、 on/ operates/ an operationStep 4 当堂检测题仿照例句改写句子( 16 分)Model: What s your desk made of? (wood) My desk is made of wood.1.What s the door of the classroom made of ? (wood)2.What re the windows made of ? (glass)3.What s your sweater made of ? ( wool)4.What re your socks made of ?( silk)二、用所给动词的适当形式填空：(
19、 10 分)1.A pen is used for (cook).2. (learn) English well is important.3.I (clean) the room just now.4.The bike was (find) by Tom.5.Many shops (see) along the street.6.This box is (use) as a desk.参考答案：一， 1 The door of the classroom is made of wood. 2. Thewindows are made of glass. 3. My sweater is made of wool. 4. My socks are made of silk. 二， 1. cooking 2. learning 3. cleaned 4. found 5. are seen 6. used通过练习巩固了本节课所学知识，同时又对学生掌握情况进行了检 测。亮点：利于图片很直观，听练结合。使用建议： 确保学生复习好被动语态再进行下面的内容
