英语人教版九年级上册：Unit_6_When_was_it_invented_课件1.ppt

1、When was it invented?,Unit 6,Which do you think is the most important invention in the world?,What other can you think of?,TV? telephone? radio? computer? car?,Can you tell when they were invented?,A: I think was invented before B: Well, I think was invented after .,game,1a,GROUPWORK,Look at the thi

2、ngs below. Number them 15 according to the order they were invented.,3,5,2,4,1,A: I think was invented before B: Well, I think was invented after .,game,A: I think was invented before B: Well, I think was invented after ,game,a,1b,Listen and match the inventions with the dates.,_ 1876 _ 1885 _ 1927

3、_ 1971 _ 1976,b,a,c,d,e,b,e,c,d,1c,PAIRWORK,Student A, cover the dates and ask student B when were the things in the picture above were invented.,Model,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

4、 was invented after the telephone.,A: When was the _ invented? B: I think it was invented in _.,Pairwork (1c:P68),1976,1885,1876,1927,1971,Edison invented the light bulb.,The light bulb was invented by Edison.,Who was the light bulb invented by?,The telephone by Bell.,was invented,Who was the teleph

5、one invented by?,Bell invented the telephone.,_ was invented by _.,The car,Karl Benz,Who was the car invented by?,Karl Benz invented the car.,A: What is the car used for? B: The car is used for traveling.,A: What is the _ used for? B: I think it is used for _ .,talking with people,A: What is the use

6、d for? B: I think it is used for _. (count),counting,A: What is the used for? B: I think it is used for _.(work),working,A: What is the used for? B: I think it is used for _.(ride),riding,A: What is the _ used for? B: It is used for _.,counting,(count),A: What is the used for? B: It is used for _.(c

7、ount),counting,A: What is the used for? B: It is used for _. (watch the things far away clearly),watching the things far away clearly.,A: What is the _ used for? B: It is used for _ .,making the food hot.,(make the food hot),A: When was invented? B: It was invented in A: Who was it invented by? B: I

8、t was invented by A: What is the used for? B: The is used for doing,pairwork,Who were they invented by? What are they used for?,adjustable 可调整的,operate 操作,heat 加热,3,1,2,2a,Listen and number the inventions in the order that you hear them.,2c,PAIRWORK,Role play the conversations using the information

9、in the chart above.,Model,A: Who was / were it / they invented? B: They was / were invented by . A: What is / are it / they used for? B: It / they is / are used for .,be used for 被动语态, “被用来做”。介词 for 表目的用途, 可接名词或动名词形式。,A: What is this? B: This is a heated ice cream scoop. A: What is it used for? B: I

10、t is used for scooping really cold ice cream. A: Who was it invented by? B: It was invented by Chelsea Lanmon.,Oral Practice,四、主动语态变为被动语态的步骤: They speak English. 主语 谓语 宾语 English is spoken by them. 主语 谓语动词的过去分词 宾语,(1)主动语态的宾语变成被动语态的主语。 (2)主动语态的谓语动词变为被动语态的谓语动词，即”“be+及物动词的过去分词”(be有时态、人称和数的变化)。 (3)主动语态的

11、主语变为by的宾语。,主动语态变为被动语态的步骤,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:主语是动作的执行者。 被动语态:主语是动作的承受者。 被动语态结构为：,(主动语态),(主动语态),(主动语态),(被动语态),(被动),

12、(被动语态),be+过去分词,将下列句子变为被动语态。,Revision:Writing,五、被动语态的时态表示 被动语态的时态一般只通过be表现, 过去分词 不变。例如： 一般现在时: The trees are planted by the farmers. 一般过去时: The trees were planted by the farmers. 现在进行时: The trees are being planted by the farmers.,一般将来时：The trees will be planted by the farmers. 现在完成时：The trees have be

13、en planted by the farmers. 含情态动词的被动语态：The trees can (must,should) be planted by the farmers.,六、被动语态的几种句型： 肯定句 主语+be+过去分词+(by) A sweet song was sung by her on the stage. 否定句 主语+be+not+过去分词+(by) A sweet song wasnt sung by her on the stage. 一般疑问句 Be+主语+过去分词+(by) Was a sweet song sung by her on the stag

14、e? 特殊疑问句 疑问词+be+主语+过去分词+(by) Where was a sweet song sung by her?,1. The woman asked the policeman for help. 2. The old man on TV tells a story on Sunday. 3. Do they use the box as a table? 4. She sent me a collection last week. 5. The teacher doesnt teach us math this term.,练习: 请把下列主动句变为被动句,6. Did L

15、ily buy her sister a hat? 7. We often hear him play the violin at home. 8. The lazy boy didnt wash clothes yesterday. 9. Students listen to the kind teacher carefully. 10.When did your father took you to the park.,3a,PAIRWORK,Make a list of five helpful inventions and five annoying inventions.,vacuu

16、m cleaner,television,car,computer,fax machine,air-conditioner,truck,hair dryer,junk food,ice cream,Model 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.,Mo

17、del 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.,Model 3,A: What is this? B: It is a microwave oven. A: What is it used for

18、? 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.,A: What do you think is the most helpful invention? B: I think the most helpful invention is the vacuum cleaner. A: W

19、hy is that? B: Well, it can help me clean the floor when mother asks me to do the cleaning.,3b,PAIRWORK,Discuss your opinion in activity 3a with your partner.,Model 1,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

20、: Well, I feel uncomfortable in the room with an air-conditioner.,Model 2,4,GROUPWORK,Choose five inventions you would like to have if you are alone on an island.,A: Id like to have a radio because I could listen to music all day. B: Yes, but thats not going to help you leave the island. I think it

21、would be better to have ,Model 1,A: Id like to have some matches because I could light a fire to keep warm. B: Yes, but thats not going to help you leave the island. I think it would be better to have a cell phone.,Model 2,A: Id like to have a telescope because I could look far. B: Yes, but thats no

22、t going to help you leave the island. I think it would be better to have a signal lamp.,Model 3,HOMEWORK,Write an article according to the information in part 4.,Exercise,1. They produced that kind of car. 2. The workers built a bridge over the river. 3. Mother tells me a story every day.,That kind

23、of car was produced by them.,A bridge was built by the workers over the river.,I am told a story by Mother every day.,I. 请把下列主动句变为被动句:,1. The TV _ (invent) around 1927. 2. They are used for _ (see) in the park. 3. This kite _ (make) by Uncle Wang. 4. Tea _ (discover) a long time ago. 5. Our classroo

24、m _ (should clean) every day.,was invented,seeing,was made,was discovered,should be cleaned,II. 用所给动词的适当形式填空：,1. _ _ the computer _ (什么时候发明的)？ 2. _ was the car _ _ (谁发明的)？ 3. A pen _ _ _(用来做) writing. 4. What do you think is _ _ _ _ (最有帮助的发明)？ 5. He said the fish was _ _ (足够咸)。,When was,is used for,

25、invention,the most helpful,salty enough,Who,invented,by,invented,III. 根据汉语完成句子：,Explanation,1. Its used for scooping really cold ice cream. be used for 意为“被用来”,强调用途或作用。 e.g. The duster is used for cleaning the rooms. be used as 意为”被当作来用”，强调被当作工具或手段来用。 be used by 意为“被使用，强调使用者。 e.g. The big box is use

26、d as a table. The car is used by our manager.,2. Shoes with adjustable heels were invented by (1) with 是介词，意为”“具有，持有，带有”。 e.g. a girl with long hair a house with a blue roof (2) adjustable意为“可调整的，可调节的”。 e.g. I have a pair of shoes with adjustable heels. (3) invent是动词，意为“发明，创造”。 e.g. Edison invented the light bulb. invention是名词，“发明，发明物” e.g. Edison had about 2,000 inventions during his lifetime.,3. Battery-operated slippers were invented by operate用法： (1) “操作” e.g. Can you operate the computer? (2)“起作用，见效果” e.g.The sleeping pill operated at once. (3)“经营，管理” e.g.The comp