Unit 6 When was it invented Which do

Unit 6 When was it invented?

Which do you think is the most important invention in the world? TV? telephone? computer? radio? car? What other can you think of?

Can you tell when they were invented?

A: I think … was invented before … B: Well, I think … was invented after ….

1 a GROUPWORK Look at the things below. Number them [1— 5] according to the order they were invented. 2 1 4 3 5

A: 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 …

1 b Listen and match the inventions with the dates. e b ___ 1876 ___ 1885 ___ 1927 aa d ___ 1971 ___ 1976 c

1 c PAIRWORK Student A, cover the dates and ask student B when were 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.

Pairwork (1 c: P 68) A: When was the _______ invented? B: I think it was invented in 1976 1876 1971 1927 1885 ______.

Edison invented the light bulb. Who was the light bulb invented by? The light bulb was invented by Edison.

Bell invented the telephone. Who was the telephone invented by? The telephone was invented by Bell.

Karl Benz invented the car. Who was the car invented by? The car was invented by _______ Karl Benz

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 used for? B: I think it is used for counting (count) _______.

A: What is the used for? B: I think it is used for working ____. (work)

A: What is the used for? B: I think it is used riding for _____. (ride)

A: What is the _______ used for? B: It is used for counting _____. (count)

A: What is the used for? B: It is used for counting ______. (count)

A: What is the used for? B: It is used for watching the things far away clearly. ______. (watch the things far away clearly)

A: What is the ____ for? B: It is used for making the food hot. _________. used (make the food hot)

A: B: When was …invented? It was invented in… Who was it invented by? It was invented by… What is the … used for? The … is used for doing…

Who were they invented by? What are they used for? adjustable 可调整的 operate 操作 heat 加热

2 a Listen and number the inventions in the order that you hear them. 3 1 2

2 c PAIRWORK Role play the conversations using the information 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。

Oral Practice 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.

将下列句子变为被动语态。 1. I open the door. (主动语态) The door is opened by me. (被动语态 ) 2. He often helps homeless people. (主动语态) Homeless people are often helped by him. (被动) 3. I handed out some papers just now. (主动语态) 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：be+过去分词 (被动语态)

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 been 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 wasn’t 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 stage? 特殊疑问句 疑问词+be+主语+过去分词+(by…) Where was a sweet song sung by her?

练习: 请把下列主动句变为被动句 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 doesn’t teach us math this term.

6. Did Lily buy her sister a hat? 7. We often hear him play the violin at home. 8. The lazy boy didn’t wash clothes yesterday. 9. Students listen to the kind teacher carefully. 10. When did your father took you to the park.

3 a PAIRWORK Make a list of five helpful inventions and five annoying inventions. Helpful inventions example telephone car 1. _____ 2. _____ fax machine 3. _____ vacuum cleaner computer 4. _____ 5. _____ television Annoying inventions example alarm clock 1. _____ ice cream 2. _____ air-conditioner 3. _____ hair dryer truck 4. _____ junk food 5. _____

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.

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 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? 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.

3 b PAIRWORK Discuss your opinion in activity 3 a with your partner. Model 1 A: What do you 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.

Model 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.

4 GROUPWORK Choose five inventions you would like to have if you are alone on an island. Model 1 A: I’d like to have a radio because I could listen to music all day. B: Yes, but that’s not going to help you leave the island. I think it would be better to have …

Model 2 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.

Model 3 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.

HOMEWORK Write an article according to the information in part 4.

Exercise

I. 请把下列主动句变为被动句: 1. They produced that kind of car. That kind of car was produced by them. 2. The workers built a bridge over the river. A bridge was built by the workers over the river. 3. Mother tells me a story every day. I am told a story by Mother every day.

II. 用所给动词的适当形式填空： invented (invent) around 1927. 1. The TV was ______ seeing (see) in the park. 2. They are used for ______ 3. This kite _____ was made (make) by Uncle Wang. discovered (discover) a long time ago. 4. Tea was _______ 5. Our classroom ________ should be cleaned (should clean) every day.

III. 根据汉语完成句子： 1. ______ When ____ was the computer ____ invented (什么� 候� 明的)？ by (�� 明的)？ 2. Who ____ was the car invented ____ ___ is used for (用来做) writing. 3. A pen ____ 4. What do you think is ____ the _____ most _______ helpful _____ invention (最有帮助的� 明)？ salty ______ enough (足� 咸)。 5. He said the fish was ____

Explanation 1. It’s 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 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 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”“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 company operates ten factories. (4)“动手术” e. g. The doctor will operate on his mother next week.

4. annoying adj. 讨厌的, 恼人的 (往往指事物 ) e. g. How annoying it is! 真讨厌。 annoyed adj. 生气的, 恼怒的 (往往指人) e. g. My father is annoyed with me. 爸爸在生我气。

5. helpful adj. 有帮助的, 有益的 e. g. Mr. White is a very helpful man. 构词法：n + ful → adj e. g. use + ful → useful thank + ful → thankful beauty+ ful → beautiful care + ful → careful

6. Imagine that you are alone on tiny island. alone adj. 意为“单独的”, 不带感情色彩。 e. g. When his wife died, he lived alonely adj. 意为“孤独的, 寂寞的” e. g. He feels lonely when he is alonely 指地方时表示“荒凉的, 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“料想或猜想、揣测”， 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……“，it是 形式主语，动词不定式是真正的主语。 e. g. It is better for you to walk to school. It is better to do sth…=had better to do sth…