九年级英语unitt9整体课件.ppt

Unit 9 When was it invented?,Section A,Warming up,,light bulb,When were they invented?,,watch,microwave oven,,alarm clock,Listening (1b: P68),1876年,1885年,1927年,,1971年,1976年,,Sample dialogues: A: 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 1930. I think it was invented after the telephone.,Pairwork (1c:P68),C: I don’t think so. I think it was invented in 1873, so it was invented before the telephone.,D: I don’t agree. I think it was invented in 1885 and it was invented after the telephone.,,Listening (2a, 2b: P69),3,1,2,scooping really cold ice cream,,,shoes with adjustable heels,Jayce Coziar and Jamie Ellsworth,,changing the style of the shoes,battery-operated snakers,,Julie Thompson,,seeing in the dark,heated ice cream scoop,Lanmon,,Chelsea,Oral Practice (2c: P69),Sentence pattern: What is it / are they used for? Who was it / were they invented by? It is / They are used for . It was / They were invented by .,,Sample dialogues: A: What is this? B: This is a heated ice cream scoop. A: What is it used for? B: It is used for scooping really cold ice cream. A: Who was it invented by? B: It was invented by Chelsea Lanmon.,Grammar Focus (P69),The passive voice 被动语态 在被动语态的句子中, 谓语部分的结构是be + 过去分词。

被动语态的句子的时态变化反映在be动词上也就是说, 把一个句子做成被 动语态的句子, 只需要写出be动词 的所需时态, 再加上所给动词,的过去分词就行了当然, 这只是指谓语部分而言我们知道, be动词作为一个独立的谓语动词有自己现在分词(being)和过去分词 (been)那么, 下面我们来看看be 在各种时态中的变化形式：,一般现在时 am / is / are 一般过去时 was / were 一般将来时 shall / will + be 过去将来时 would / should + be 现在进行时 am / is / are + being 过去进行时 was / were + being 现在完成时 have / has + been 过去完成时 had + been,,1. 世界上许多国家都讲英文 English is spoken in many countries all over the world . 2. 纸是中国发明的 Paper was invented in China. 3. 这栋大楼是去年建造的 The building was built last year.,Make sentences,4. 他父亲不会让他娶玛丽为妻的。

He won’t be allowed, by his father, to marry Mary. 5. 他们结束训练时将被派往部队 They would be sent to the army when they finished the training.,6. 这个计划正在执行中 The project is being carried out.,8. 这本小说已被译成了几种语言 This novel has been translated into several languages.,7. 那时这案子正在调查中 The case was being investigated then.,9. 他们说生产成本已经下降了 They said that production costs had been reduced.,,Pairwork (3a:P70),Helpful inventions: vacuum cleaner, soundproof door and window, car, computer, fax machine Annoying inventions: air-conditioner, truck, telephone, junk food, ice cream,Sentence pattern: What is this in the picture? What is it used for? Do you think it is helpful / annoying?,,Dialogue 1: A: What is this?,B: It is an alarm clock. A: What is it used for? B: It is used for waking people up in the morning. A: Do you think it is annoying? B: Sometimes, when I want to go on sleep.,,Dialogue 2: A: What is this?,B: It is a light bulb. A: What is it used for? B: It is used for giving light. A: Do you think it is helpful? B: Yes, I think so. Because I always do homework and read books in the evening by its light.,,Dialogue 3: A: What is this?,B: It is a microwave oven. A: What is it used for? B: It is used for heating cold food and cooking meals. A: Do you think it is helpful?,B: Yes, I think so. Because my parents are very busy and I can use it to cook meals by myself.,,Dialogue 1: A: What do you think is the most helpful invention? B: I think the most helpful invention is the vacuum cleaner.,Pairwork (4:P70),A: Why is that? B: Well, it can help me clean the floor when mother asks me to do the cleaning.,Dialogue 2: A: What do you think is the most annoying invention? B: I think the most annoying invention is the air-conditioner. A: Why is that?,B: Well, I feel uncomfortable in the room with an air-conditioner.,A: What do you think are the most annoying or helpful inventions? B: I think the truck is the most annoying invention and the soundproof door and window is the most helpful invention.,Dialogue 3:,,soundproof door and window,A: Why is that? B: The trucks always make noises and people can’t sleep well. If they have the soundproof door and window, people needn’t worry about the noises anymore.,,Groupwork (4: P70),What would you do if you are alone on a tiny island?,,A: I’d like to have some matches because I could light a fire to keep warm. B: Yes, but that’s not going to help you leave the island. I think it would be better to have a cell phone.,Dialogue 1:,,A: I’d like to have a telescope because I could look far. B: Yes, but that’s not going to help you leave the island. I think it would be better to have a signal lamp.,Dialogue 2:,Section B,crispy and salty,Describe how food tastes.,sour,sweet,sweet,,,,Listening (2a, 2b: P71),The potato chips were invented by mistake. 2. They were invented in 1863. 3. The customer thought the potatoes weren’t thin enough.,T,F,T,4. The customer said they weren’t salty enough. 5. George wanted to make the customer happy. 6. The customer was happy in the end.,T,F,F,,_____________that potato chips were invented by mistake? Chips ______ _________。