1、When was it invented?Unit 6Which 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.1aGROUPWORK Look at the things below.Number them
2、 15 according to the order they were invented.35241A:I think was invented before B:Well,I think was invented after.A:I think was invented before B:Well,I think was invented after a1bListen and match the inventions with the dates._ 1876_ 1885_ 1927_ 1971_ 1976bacdebecd1cPAIRWORKStudent A,cover the da
3、tes 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 was invented after the telephone.A:When was the _ invented?B:I think it was
4、 invented in _.Pairwork(1c:P68)19761885187619271971Edison invented the light bulb.The light bulb was invented by Edison.Who Who waswas the light bulb the light bulb invented byinvented by?The telephone by Bell.was invented Who was the telephone inventedWho was the telephone invented by?by?Bell inven
5、ted the telephone._ was invented by _.The carKarl BenzWho was the car invented by?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 peopleA:What is the used for?B:I think
6、it is used for _.(count)countingA:What is the used for?B:I think it is used for _.(work)workingA:What is the used for?B:I think it is used for _.(ride)ridingA:What is the _ used for?B:It is used for _.counting(count)A:What is the used for?B:It is used for _.(count)countingA:What is the used for?B:It
7、 is used for _.(watch the things far away clearly)watching the thingsfar 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 inA:Who was it invented by?B:It was invented byA:What is the used for?B:The is used for doing
8、 Who were they invented by?Who were they invented by?What are they used for?What are they used for?adjustable 可调整的可调整的operate 操作操作 heat 加热加热3122aListen and number the inventions in the order that you hear them.2cPAIRWORKRole play the conversations using the information in the chart above.Model A:Who
9、 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 被动语态被动语态,“被用来做被用来做”。介。介词词 for 表目的用途表目的用途,可接名词或动名词形式。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:It is used for scooping really cold ice
10、 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四、主动语态变为被动语态的步骤:They speak English.主语主语 谓语谓语 宾语宾语English is spoken by them.主语主语 谓语动词的过去分词谓语动词的过去分词 宾语宾语(1)主动语态的宾语变成被动语态的主语。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+及物动词的过及物动词
11、的过去分词去分词”(be有时态、人称和数的变化有时态、人称和数的变化)。(3)主动语态的主语变为主动语态的主语变为by的宾语。的宾语。主动语态变为被动语态的步骤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:主语主语是动作
12、的执行者执行者。被动语态:主语主语是动作的承受者承受者。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)(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。五、被动语态的时态表示五、被动语态的时态表示 被动语态的时态一般只通过被动语态的时态一般只通过be表现表现,过去分词过去分词 不变。例如：不变。例如：一般现在时一般现在时:The trees are planted by the farmers.一般过去时一般过去时:The trees were planted by the farmers.现在进行时现在进行时:The trees ar
13、e being planted by the farmers.一般将来时：一般将来时：The trees will be planted by the farmers.现在完成时：现在完成时：The trees have been planted by the farmers.含情态动词的被动语态：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：六、被动语态的几种句型：肯定句肯定句 主语主语+be+过去分词过去分词+(by)A sweet song was sung by her on the
14、 stage.否定句否定句 主语主语+be+not+过去分词过去分词+(by)A sweet song wasnt sung by her on the stage.一般疑问句一般疑问句 Be+主语主语+过去分词过去分词+(by)Was a sweet song sung by her on the stage?特殊疑问句特殊疑问句 疑问词疑问词+be+主语主语+过去分词过去分词+(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
15、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.练习练习:请把下列主动句变为被动句请把下列主动句变为被动句6.Did Lily 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
16、 the kind teacher carefully.10.When did your father took you to the park.3aPAIRWORKMake a list of five helpful inventions and five annoying inventions.vacuum cleanertelevisioncarcomputerfax machineair-conditionertruckhair dryerjunk foodice creamModel 1 A:What is this?B:It is an alarm clock.A:What is
17、 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.Model 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 homewor
18、k 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?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 yo
19、u think is the most helpful invention?B:I think the most helpful invention is the vacuum cleaner.A:Why is that?B:Well,it can help me clean the floor when mother asks me to do the cleaning.3bPAIRWORKDiscuss your opinion in activity 3a with your partner.Model 1 A:What do you think is the most annoying
20、 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.Model 2 4GROUPWORKChoose 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 musi
21、c all day.B:Yes,but thats not going to help you leave the island.I think it 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 2A:Id like
22、 to have a telescope because I could look far.B:Yes,but thats not going to help you leave the island.I think it would be better to have a signal lamp.Model 3HOMEWORK 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 th
23、e river.3.Mother tells me a story every day.That kind 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.T
24、ea _(discover)a long time ago.5.Our classroom _ (should clean)every day.was inventedseeingwas madewas discoveredshould be cleanedII.用所给动词的适当形式填空：用所给动词的适当形式填空：1._ _ the computer _(什么时什么时候发明的候发明的)？2._ was the car _ _(谁发明的谁发明的)？3.A pen _ _ _(用来做用来做)writing.4.What do you think is _ _ _ _(最有帮助的发明最有帮助的发明)
25、？5.He said the fish was _ _(足够咸足够咸)。When was is used for invention the most helpful salty enoughWhoinvented byinventedIII.根据汉语完成句子：根据汉语完成句子：Explanation 1.Its used for scooping really cold ice cream.be used for 意为意为“被用来被用来”,强调用途或作强调用途或作用。用。e.g.The duster is used for cleaning the rooms.be used as 意为意为
26、”被当作被当作来用来用”，强调被当，强调被当作工具或手段来用。作工具或手段来用。be used by 意为意为“被被使用，强调使用者。使用，强调使用者。e.g.The big box is used as a table.The car is used by our manager.2.Shoes with adjustable heels were invented by(1)with 是介词，意为是介词，意为”“”“具有，持有，带有具有，持有，带有”。e.g.a girl with long hair a house with a blue roof(2)adjustable意为意为“可调
27、整的，可调节的可调整的，可调节的”。e.g.I have a pair of shoes with adjustable heels.(3)invent是动词，意为是动词，意为“发明，创造发明，创造”。e.g.Edison invented the light bulb.invention是名词，是名词，“发明，发明物发明，发明物”e.g.Edison had about 2,000 inventions during his lifetime.3.Battery-operated slippers were invented by operate用法：用法：(1)“操作操作”e.g.Can
28、you operate the computer?(2)“起作用，见效果起作用，见效果”e.g.The sleeping pill operated at once.(3)“经营，管理经营，管理”e.g.The company operates ten factories.(4)“动手术动手术”e.g.The doctor will operate on his mother next week.4.annoying adj.讨厌的讨厌的,恼人的恼人的 (往往指事物往往指事物)e.g.How annoying it is!真讨厌。真讨厌。annoyed adj.生气的生气的,恼怒的恼怒的 (往
29、往指人往往指人)e.g.My father is annoyed with me.爸爸在生我气。爸爸在生我气。5.helpful adj.有帮助的有帮助的,有益的有益的e.g.Mr.White is a very helpful man.构词法：构词法：n+ful adje.g.use+ful useful thank+ful thankful beauty+ful beautiful care+ful careful6.Imagine that you are alone on tiny island.alone adj.意为意为“单独的单独的”,不带感情色彩。不带感情色彩。e.g.When
30、 his wife died,he lived alone.lonely adj.意为意为“孤独的孤独的,寂寞的寂寞的”e.g.He feels lonely when he is alone.lonely 指地方时表示指地方时表示“荒凉的荒凉的,偏僻的偏僻的”e.g.The old man lives in a lonely small village.7.I think it would be better to have(1)would 在此处表示在此处表示“料想或猜想、揣测料想或猜想、揣测”，后接动词原形或完成式。，后接动词原形或完成式。e.g.What would she be doing there?(2)It is better to do sth“最好做最好做“，it是形式主语，动词不定式是真正的是形式主语，动词不定式是真正的主语。主语。e.g.It is better for you to walk to school.It is better to do sth=had better to do sth谢谢观看！谢谢观看！
