九年级英语全册 Unit 9 When was it invented.Section A 3a4学

sweet soft
salty
1a. Fill in the blanks with the words given.
sweet, crispy, salty, sour
salty
sour
sweet
sweet
1b. Write the name of a different food after each word.
sweet: crispy: salty: sour:
banana, apple, cake potato chips, salad pizza, french fries, olives grape, lemon, pickle, grapefruit
2a. Listen and circlng drinking water
to the water
Shen Nong
decided
over an open fire
Some leaves wasn’t brought to taste the hot mixture
The emperor
fell
to the western world until 1610.
A sample version
From pie plate to flying disk The flying disk was invented by college students.
Flying disk is a metal pie plate. In the 1950s, several college students ate pies made by a bakery in Bridgeport, Connecticut. They found it interesting to throw the pie plates with each other. Then it became a game. Today, there are flying disk clubs, magazines and even a festival.

Unit 9 When was it invented ?一、教学目标1、语言目标：（1）Talking about the history of inventions(谈论重要发明的历史及用途)（2）能用被动语态正确表达发明物的历史。

如：It was invented in 1876. It was invented by Bell.2、知识目标：学会使用含有被动语态的不同句型结构“When was it invented?” 和“Who was it invented by?”来谈论各种发明物的历史。

3、能力目标：通过了解一些中外发明者的事迹，培养勤奋学习、立志为社会多做贡献的精神。

二、重点知识1、重点单词invent, mistake, ancient, produce, pleasant, pie, throw, century, notice, including, knock, basket, metal, below, towards, develop, risen基本要求：会读、会写、会用。

2、重点短语be used for, by mistake, in the end, by accident, according to, fall into, in this way, knock into基本要求：会读、会写、会用。

3、重点语法The Passive Voice(被动语态的用法):1. When was / were ... invented?2. Who was / were ... invented by?3. What is / are ... used for?基本要求：理解其含义，学以致用。

三、导学案Section A●例析导学1. When was it invented?invent v. 发明，创造例如：He has invented a new way of making silk. 他发明了一种制造丝绸的新方法。

九年级英语Unit9 When was it inventedStructures: Passive voice (questions and statements)Target language: When was the telephone invented?I think it was invented in 1876.Vocabulary: salty, sweet, sour, crispy, pleasant, potato chips, slipper, leaf, fire, scoop, light bulb, telescope, microwave oven, abacus, camera, beverage, be invented by, be used for, by mistake, by accidentLearning strategies: Brainstorming, Role playingSECTION AGoals●To learn to use Passive voice (questions and statements)●To listen, talk and read about inventionProceduresWarming up by learn about Passive voice (questions and statements)Tense Subject Auxiliary PastParticiple Singular PluralPresent The car/cars is are designed. Present perfect The car/cars has been have been designed. Past The car/cars was were designed. Past perfect The car/cars had been had been designed. Future The car/cars will be will be designed. Future perfect The car/cars will have been will have been designed. Present progressive The car/cars is being are being designed. Past progressive The car/cars was being were being designedActive Professor Villa gave Jorge an A.Passive An A was given to Jorge by Professor Villa.Passive Jorge was given an A.1a Doing group workLook at the things on page 68. Number them in the order of their invention.A: I think the telephone was invented before the car.Televisor 1925 John L. Baird ScottishA: I think the televisor was invented before the computer.Telephone 1876 A.G. Bell AmericanA: I think the calculator was invented before the plane.B: Well, I think the calculator was invented after the planer.1b Listening and matchingTapescriptGirl: Life must have been difficult when you were a kid.Woman: Oh, not really. Why do you say that?Girl: Well, you didn’t have many modern inventions. Like, you probablydidn’t have a telephone, right?Woman: Of course we did! How old do you think I am? The telephone was invented in 1876. Girl: How about cars? I bet cars weren’t invented yet.Woman: Sure they were. Cars were invented in 1885. My family had a car. I think you need to take a history class, Alice.Girl: Ha, ha! Well, did you have a TV?Woman: No, we didn’t. The TV was invented around 1927, I think. Some friends of mine had one. But in those days, TVs were really expensive, and we couldn’t afford one.Girl: And I bet you didn’t have calculators and computers and stuff. That’s something I do know.We learned in school that hand-held calculator were invented in 1971 and personal computers were invented in 1976.Woman: You’re right. I didn’t have those things when I was young. But I do now!The telephone was invented in 1876.Cars were invented in 1885.The TV was invented around 1927.The hand-held calculator were invented in 1971.The personal computers were invented in 1976.Now you are going to read the listening tapescript. Blacken the passive voice, circle all the linking words and underline all the useful expressions.1c Doing pairworkIn pairs, one covers the dates and the other asks him when the things in the pictures on page 68 wereA: 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 1971.2a Listening and numberingNext you are going to listen to a tapescript and number the inventions in the order that you hearTapescriptBoy: What are those?Girl: They’re battery-operated slippers.Boy: What are they used for?Girl: They’re used for seeing in the dark.Boy: Oh, that’s cool! Who were they invented by?Girl: Julie Thompson. And look at this heated ice cream scoop.Boy: I know what it’s for! It’s used for scooping out really cold ice cream.Girl: Right. It was invented by Chelsea Lanmon.Boy: My favorite are those shoes with adjustable heels. You know—you can move the heels up and down. They were invented by Jayce Coziar and Jamie Ellsworth.Girl: And what are they used for?Boy: Well, you can change the style of your shoes. You can make the shoes go from casual to dressy.The inventions are heard in the following order.battery-operated slippers→heated ice cream scoop→shoes with adjustable heels2b Listening and matchingYou shall listen to the recording again and match the items in the chart on page 69 in columns A, B,A: Invention B: Who was it/ were theyinvented by? C: What is it/ are they used for?Shoes with adjustable heels Chelsea Lanmon Scooping really cold ice cream Battery-operated sneakers Jayce Coziar and JamieEllsworthSeeing in the darkHeated ice cream scoop Julie Thompson Changing the style of theshoes2c Doing pairworkRole play the conversations using the information in the chart in the middle of page 69. Pay attentionA: 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.3a Doing pairworkThere are two kinds of inventions. One is helpful invention, and the other is annoying invention. Helpful inventions Annoying inventionsExample: telephone Example: alarm clock1. plane 1. atomic bomb2. computer 2. missile3. bike 3. rifle4. car 4. chemical weapon5. train 5. alarm clock3b Doing pairworkA:What do you think is the most helpful invention?B:I think the most helpful invention is the light bulb.A: Why is that?B: Well, it gives people more time to work and play every day.A:What do you think is the most annoying invention?B:I think the most helpful invention is the atomic bomb.A: Why is that?B: Well, it gives people more power to kill others.A:What do you think is the less helpful invention?B:I think the less helpful invention is the car.A: Why is that?B: Well, it makes it possible for people to move to distant places faster.4 Doing groupworkImagine you are left alone on a small island in the sea. If you are allowed to take five inventionsI like to take the followings with me.knife flashlight handphone telescope gun（赠品不喜欢可以删除）期末学生评语选粹◆品学皆优◆你是一个全面发展的好学生。

Unit 9 When was it invented ?【考例】The boy is used to ______ in the foreign country.A. to workB. workC. studyD. studying【考例】I ______ think you _____ right.A. don’t；areB. /; aren’tC. doesn’t；areD. do; aren’t【考例】Many boys think playing computer games is ________ of all games.A. more interestingB. the most interestingC. interestingD. more and more interesting【考例】The blackboard ______ just now. Do you know who did it?A. cleanedB. was cleaningC. has cleanedD. was cleaned【考例】We will not go home _____ it stops raining.A. afterB. beforeC. untilD. when【考例】Y our brother was noticed ______ other’s homework just now.A. copyB. to copyC. copyingD. copies【考例】That house is not ______ , so we have _______ to buy it.A. enough big; enough moneyB.big enough；enough moneyC. enough big; money enoughD. much big; many money【考例】We must go there on foot _______ your father’s idea.A. according toB. asC. forD. by【考例】There are a lot of yellow ______ when autumn comes.A. leafB. leafsC. leavesD. apple【考例】Y our father is a _____ man. So many people like him.A. kind-heartB. twenty-eight years oldC. kind-heartedD. long-hair 【考例】The house is ______ than I thought.A. very cheaperB. much expensiveC. much cheaper D．very expensive 【考例】It _____ that your new teacher is a professor.A. knowsB. saysC. is saidD. is saying。