广东省珠海九中九年级英语全册Unit 9 When was it inventedSection A 2课件 人教新目标版.ppt

新目标新目标 九年级九年级Unit 9Unit 9Unit 9When was it invented?When was it invented?Section A Period 2Section A Period 2 Pairwork (3a:P70) Helpful inventions:Helpful inventions: vacuum cleaner, vacuum cleaner, soundproof door and window, car, soundproof door and window, car, computer, fax machinecomputer, fax machine Annoying inventions:Annoying inventions: air-conditioner, air-conditioner, truck, telephone, junk food, ice creamtruck, telephone, junk food, ice cream Sentence pattern:Sentence pattern: What is this in the picture?What is this in the picture? What is it used for? What is it used for? Do you think it is helpful / annoying? Do you think it is helpful / annoying?Dialogue 1:Dialogue 1:A A: What is this?: What is this?B B: It is an alarm clock.: It is an alarm clock.A A: What is it used for?: What is it used for?B B: It is used for waking people up in : It is used for waking people up in the morning. the morning.A A: Do you think it is annoying?: Do you think it is annoying?B B: Sometimes, when I want to go on : Sometimes, when I want to go on sleep. sleep.Dialogue 2:Dialogue 2: A A: What is this? : What is this? B B: It is a light bulb. : It is a light bulb. A A: What is it used for?: What is it used for?B B: It is used for giving light.: It is used for giving light.A A: Do you think it is helpful?: Do you think it is helpful?B B: Yes, I think so. Because I always do : Yes, I think so. Because I always do homework and read books in the homework and read books in the evening by its light. evening by its light.Dialogue 3:Dialogue 3:A A: What is this?: What is this?B B: It is a microwave oven. : It is a microwave oven. A A: What is it used for?: What is it used for?B B: It is used for heating cold food and : It is used for heating cold food and cooking meals. cooking meals.A A: Do you think it is helpful?: Do you think it is helpful?B B: Yes, I think so. Because my parents : Yes, I think so. Because my parents are very busy and I can use it to are very busy and I can use it to cook meals by myself. 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)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)Groupwork (4: P70) What would you do if you are alone What would you do if you are alone on a tiny island?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:1. Who invented the ________ ?2. Mrs Brown bought a new ________________ last week.3. I’d like a pair of ___________ .4. The _________is the most helpful invention.5. There are three small ________ in the radio. 根据图片提示，在横线上填入适当的单词完根据图片提示，在横线上填入适当的单词完成句子，每空一词。

成句子，每空一词1题图题图2题图题图3题图题图4题图题图5题图题图calculatormicrowave ovenslipperslight bulbbatteries 根据括号内要求完成句子，每空一词根据括号内要求完成句子，每空一词1. Cars were invented in 1885. (对划线部对划线部分提问分提问) ______ were cars invented? 2. Julie Thompson invented electric slippers. (改为被动句改为被动句) Electric slippers _______________ Julie Thompson.Whenwere invented by3. We all noticed her face turn red. (改为被动句改为被动句) Her face ____________ turn red by us all. 4. The light bulb was invented by Tomas Edison. (对划线部分提问对划线部分提问) ________ the light bulb invented by?5. The refrigerator is used to keep food fresh. (改为同义句改为同义句) The refrigerator is used __________ food fresh.was noticed toWho wasfor keeping1.We use the _________to count. The calculator__________________2.We use _________________to make the food hot. The microwave oven_________ __________________calculatoris used for counting.the microwave oven用合适的词填空。

用合适的词填空is used formaking the food hot.3. The _________is used for _________________. (talk with people)4. Who_____ light bulbs________ by?5. The computer_____________1976.talking with peopletelephonewereinventedwas invented in汉译英1）计算机是何时发明的？）计算机是何时发明的？ 2）谁发明了计算机？）谁发明了计算机？ 3）计算器是用来做什么？）计算器是用来做什么？ 4）你认为什么是最有用的发明？）你认为什么是最有用的发明？ 5）每天它能够给人们更多时间工作）每天它能够给人们更多时间工作和玩。

和玩1. When was the computer invented?2. Who was the computer invented by?3. What’s the calculator used for?4. What do you think is the most helpful invention?5. It gives people more time to work and play every day.1. I open the door.The door is opened by me.2. He often helps homeless people.Homeless people are often helped by him.3. I handed out some papers just now.Some papers were handed out by me just now.主动语态主动语态:主语主语是动作的是动作的执行者执行者被动语态被动语态:主语主语是动作的是动作的承受者承受者被动语态结构为：被动语态结构为：(主动语态主动语态)(主动语态主动语态)(主动语态主动语态)(被动语态被动语态)(被被动动)(被动语态被动语态)be+过去分词过去分词将下列句子变为被动语态。

将下列句子变为被动语态Thank you for listening!。