九上 Unit 9 When was it invented第2課時Section A(1a-2c)

Unit 9 When was it invented? Section A(1a-2c)Learning goals:Talk about the history of inventions and their uses by using the passive voice.Step 1 Preview如何理解被動語態(tài)？ 為取勝更清晰、更深刻地理解被動語態(tài)的含義，可以將主動語態(tài)和被動語態(tài)的句子結(jié)構(gòu)進(jìn)行比較。 主動語態(tài)： 主語+ 謂語動詞 + 賓語 + 其他成分 被動語態(tài)： 主語+ be +過去分詞 + by +賓語 +其他成分 如： Many people speak English.被動語態(tài) English is spoken by many people.一專項訓(xùn)練1. The bridge _ （build） by the farmers themselves in 1982.2. All the books will _（send） to the children who live in the small village.3. Keys _ used for _ the doors. （open）4. My mother told me that my homework must _（finish） on time.5. When _ the car _? （invent）答案：1. was built 2. be sent 3. are, opening 4. be finished 5. was invented通過這一環(huán)節(jié)的復(fù)習(xí)，使對被動語態(tài)遺忘或掌握不好的學(xué)生又能很好地掌握和運用。二Translate1. 汽車是何時發(fā)明的？它是在1885年發(fā)明的。2. 電動拖鞋是何時發(fā)明的？它們是去年發(fā)明的。3. 他們是誰發(fā)明的？它們是朱莉.湯姆森發(fā)明的。4. 他們是用來干什么？它們是用來在黑暗中照明的。答案：1._When was the car invented? _It was invented in 1885.2. _When was electric slippers invented? _They were invented last year.3. _Who were they invented by? _They were invented by Julie.Thompson.4. _What were they used for? _Theyre used for seeing in the dark.這些是本課甚至是本單元的基本句型。通過檢測可看出學(xué)生的預(yù)習(xí)情況，利于下一步教學(xué)，同時給沒預(yù)習(xí)好的同學(xué)一次學(xué)習(xí)的機(jī)會。Step 2 PresentationLook at the things on page 68. When were they invented? Number them in the order of their invention. A: I think the telephone was invented before the car.B: Well, I think the telephone was invented after the car.TV 1925 John L. Baird ScottishA: I think the TV was invented before the computer.B: Well, I think the TV was invented after the computer.Telephone 1876 A.G. Bell AmericanT: Which on earth is right? Now lets look at 1b.利于圖片很直觀而且能引起學(xué)生注意激發(fā)學(xué)生的興趣。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 talking 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 telephone was invented in 1876.Cars were invented in 1885.The TV was invented around 1927.The hand-held calculator was invented in 1971. The personal computers were 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 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, whatre some other inventions? Whom are they invented by? Whatre they used for? Lets 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 page 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?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 its for! Its used for _really cold ice cream.G: Right. It was invented _ Chelsea Lanmon.B: My favorite are those shoes _ _ heels. You know you can move the heels _. They were invented by Jayce Coziar and Jamie Elsworth.G: And _are they used for?B: Well, you can change the style of your shoes. You can make the shoes go _casual _ dressy.答案: operated/ seeing/ invented/ scooping/by/ with adjustable/up and down/what/from/to.進(jìn)行聽力模仿，感知英語發(fā)音特點，提高口語表過水平.學(xué)生間的對話練習(xí)和據(jù)聽力原文填空很好地訓(xùn)練了學(xué)生的口語和閱讀能力。翻譯探究：1. When was it invented?invent v. 發(fā)明，創(chuàng)造 例如：He _a new way of making silk. 他發(fā)明了一種制造絲綢的新方法。Do you know who _computers? 你知道誰發(fā)明的電腦嗎？【拓展】（1）inventor n. 發(fā)明家，創(chuàng)造者，發(fā)明者 例如：Edison was a great_. 愛迪生是一個偉大的發(fā)明家。（2）invention n. 發(fā)明（物），創(chuàng)造 例如：Edison had 1,093_. 愛迪生有1，093項發(fā)明。2Theyre used for seeing in the dark.它們被用于在黑夜里觀看。be used for表示“被用來做”，介詞for表示目的和用途，后面接名詞或動詞-ing形式。Wood can_ paper.木材可以被用來造紙?！就卣埂亢衎e used的常用短語：（1）be used as表示“被用作”，介詞as意思是“作為”的意思，其后一般接名詞，強(qiáng)調(diào)使用的工具及手段。This book can_ a textbook.這本書可以當(dāng)作教科書來用。（2）be used by表示“被使用”，by后接動作的執(zhí)行者。This kind of machine _farmers for getting in crops.3Battery-operated slippers were invented by Julie Thompson.電池控制的拖鞋是朱莉。湯普森發(fā)明的。operate v. 操作，作業(yè)【拓展】（1）operate v. 操作，作業(yè) 例如：Can you _the computer? 你會用電腦嗎？（2）operate v. 動手術(shù)，用于operate on sb. “給某人做手術(shù)”。例如：The doctor will _his mother at once. 那位醫(yī)生將馬上為他的母親動手術(shù)。（3）operate v. 經(jīng)營，管理 例如：The company _ten factories. 這家公司經(jīng)營著10家工廠。（4）operation n. 手術(shù) 例如：She had_ for stomach. 她做過胃部手術(shù)。答案：1. has invented/ invented/ inventor /inventions2. be used for making/ be used as/ is used by3. operate/ operate on/ operates/ an operationStep 4當(dāng)堂檢測題仿照例句改寫句子（16分） Model: Whats your desk made of? (wood) My desk is made of wood.1. Whats the door of the classroom made of ? (wood) _2. Whatre the windows made of ? (glass) _3. Whats your sweater made of ? ( wool) _4. Whatre your socks made of ?( silk) _ 二、用所給動詞的適當(dāng)形式填空：（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.參考答案：一，1 The door of the classroom is made of wood. 2. The windows 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通過練習(xí)鞏固了本節(jié)課所學(xué)知識，同時又對學(xué)生掌握情況進(jìn)行了檢測。亮點：利于圖片很直觀，聽練結(jié)合。使用建議： 確保學(xué)生復(fù)習(xí)好被動語態(tài)再進(jìn)行下面的內(nèi)容。11