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　　Unit 9 When was it invented?
　　Part 1: Teaching design (第一部分：教学设计)
　　Structures: 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, era, beverage, be invented by, be used for, by mistake, by accident
　　Learning strategies: Brainstorming, Role playing
　　SECTION A
　　Goals
　　●To learn to use Passive voice (questions and statements)
　　●To listen, talk and read about invention
　　Procedures
　　Warming up by learn about Passive voice (questions and statements)
　　Passive Verb Formation
　　Tense Subject Auxiliary Past
　　Participle
　　Singular Plural
　　Present 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 designed
　　Pay attention to the passive voice of “give”.
　　Active 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 work
　　Look at the things on page 68. 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.
　　Televisor 1925 John L. Baird Scottish
　　A: I think the televisor was invented before the puter.
　　B: Well, I think the televisor was invented after the puter.
　　Telephone 1876 A.G. Bell American
　　A: I think the calculator was invented before the plane.
　　B: Well, I think the calculator was invented after the planer.
　　1b Listening and matching
　　Listen to the recording and match the inventions with the dates.