Unit 9 When was it invented?（Section A 1a-2c）

课件19张PPT。Unit 9 When was it invented?Section ADo you know the Four great inventions in ancient China?
Paper-making(造纸术）
Compass（指南针）
Printing（印刷术）
Gunpowder（火药）
Find out the new wordsinvent

→n.v.inventorinventioncalculatorn.计算器scoopn./v. 勺子，用勺子舀Adjustable heels可调整的鞋跟battery n.电池pl. batteriesoperatev.操作，手术→n.operationslippern.拖鞋heatv.加热light bulb 电灯泡microwave oven 微波炉The many all his life.
Edison was one of the greatest ____ in the world.
inventorinventedinventionsinventorsIn what order do you think they were invented? Number them[1—5]123451aListen and match the inventions with the dates.abce1bExplanation年份的读法：两位在一起读。
eg. 1976
1900
2000
Read the following years
1749
1508
146 nineteen seventy-sixnineteen hundredtwo thousandseventeen forty-ninefifteen and eightone hundred and forty-six-When was --- invented? -I think it was invented in ---19271976197118761cPAIRWORKListen and number the inventions in the order you hear them.1232aListen again and match the items in columns A, B and C.2b Pairwork:Practice conversations like thisWhen was ---- invented?
It was invented in---.
Who was it invented by?
It was invented by---?
What’s it used for ?
It’s used for---Translate the following phrases可调整后跟的鞋shoes with adjustable heels
battery-oprated slippers
heated ice cream scoop
the style of the shoes
who was sth invented by?电池控制的拖鞋加热的冰淇淋勺鞋的样式谁发明的某物microwave oven alarm clocklight bulb 3aWhat do you think is the most
helpful/annoying inventions?helpful n.+ful →adj.useful wonderful
beautiful hopefulannoyingadj.令人恼怒的， +物
annoyed=angry +人Discuss:3b Practice conversations like this
A: What do you think is the most
helpful/annoying invention?
B: I think the most helpful invention
is…
A: Why is that?
B: Well, it gives/helps people…
do you think 为插入语插入语在使用时的基本结构是特殊疑问词+ do you think+(主语)+陈述语气eg. Where do you think the book is? I think the most helpful invention is… I’d like to have a…because I could… It’s used for… I also want a…because it…4 groupworkCrazy inventionsused for dancing used for driving and flyingused for walking and singingused for living and walkingused for driving in the seaused for drivingHOMEWORK1.Recite grammar focus on Page
69and 3b on Page70 .
2.Memorize the spellings and uses of the new words.GoodBye!