Unit 9

When was it invented?

Section A

课时目标1. 能听懂、会用一般过去时被动语态的句子，并记下关键信息。

2.能区分一般现在时和一般过去时的 被动语态。3.能用一般现在时和一般过去时的被 动语态造句。

人类的每一次改革都是社会前进的步伐，每一次思想的升华都越来越接近文明。发明使人类由黑暗走向光明。正因为如此，社会离不开发明。

paper-making compass

printing gun powder

A: I think paper-making was invented before the compass.

B: I think paper-making was invented after the compass.

paper-making compass

printing gun powder

A: I think the calculator was invented before the computer.

B: I think the calculator was invented after the computer.

Listen and match the inventions with the dates.

a

b

ce

Listen and fill in the blanks.

Alice: Life must have been difficult when you were a kid.Woman: Oh, not really. Why do you say that?Alice: Well, you didn’t have many modern __________. Like, you probably didn’t have a telephone, right?Woman: Of course we did! How old do you think I am? The telephone was invented in 1876.Alice: ___________ ___________ cars? I bet cars weren’t invented yet.Woman: Sure they were. Cars were invented in 1885. My family had a car. I think you need to take a history class, Alice.

inventions

How about

Alice: Ha, ha! Well, did you have a TV?Woman: No, we didn’t. The TV was invented around 1927, I think. Some friends of mine had one. But in those days, TVs were really expensive, and we couldn’t ___________ one.Alice: And I bet you didn’t have calculators and computers and stuff. That’s something I do know. We learned in school that hand-held calculators were invented in 1971 and __________ computers were invented in 1976.Woman: You’re right. I didn’t have those things when I was young. But I do now!

afford

personal

Pairwork

— When was the phone invented?

— I think it was invented in 1876.

18761971

192719761885

Invention Inventor Time

telephone Bell (an American) 1876

computer an American 1976

light bulb Edison (an American) 1830

camera a Frenchman 1837

bike an Englishman 1839

basketball James Naismith

(a Canadian) 1861

Practice

A: When was the phone invented?

B: It was invented in 1876.

A: Who was it invented by?

B: It was invented by Bell.

battery-operated slippers

heated ice cream scoop

shoes with adjustable

heels

电池供电的拖鞋

加热的冰激凌勺

可调节后跟的鞋

Listen and number the inventions in the order you hear them.

1 23

Listen again and match the items incolumns A, B and C.

Listen and fill in the blanks.

• Boy: What are those?

• Girl: They’re battery-operated slippers.

• Boy: What are they ________ for?

• Girl: They’re ________ for seeing in the dark.

• Boy: Oh, that’s cool! Who were they ________ by?

• Girl: Julie Thompson. And look at this ________

ice cream scoop.

• Boy: I know _______ it’s for! It’s used for scooping

out really cold ice cream.

used

used

invented

heated

what

•Girl: Right. It was invented by Chelsea Lanmon.

•Boy: My favorite are those shoes with adjustable

heels. You know — you can ________ the

heels up and down. They were invented by

Jayce Coziar and Jamie Ellsworth.

•Girl: And what are they used for?

•Boy: Well, you can change the ______ of your

shoes. You can make the shoes go from

casual to dressy.

move

style

Woman: What is it?Girl: It is a heated ice cream scoop.Woman: Who was it invented by?Girl: It was invented by Chelsea Lanmon.Woman: What is it used for? Girl: It is used for scooping really cold ice cream.

battery-operated slippers

heated ice cream scoop

shoes with adjustable

heels

Seeing in the dark

Scooping really cold ice cream

Changing the style of the shoes

microwave oven

heat food

cell phonetalking withoutmeeting

MP3

listen to music

car / 1885 / Henry Ford / travel fast

fridge / 1862 / Harrison / keep food fresh

washing machine / 1858 / Smith / wash clothes

The Passive Voice 被动语态被动语态

被动语态的构成构成 :

be 动词 + ( 及物动词的 ) 过去分词

一般现在时

一般过去时

am (is, are) + done

was (were) + done

• 主动句变被动句的方式： 主动句： 主语 + 及物动词谓语 + 宾语

被动句 : 主语 + be + 过去分词 + by 宾语 His father loves him.

He is loved by his father.

被动语态 (The Passive Voice)

被动语态的句型：

肯定句 主语 + be + 过去分词 + （ by … ）

否定句 主语 + be not + 过去分词 + （ by … ）

一般疑问句 be + 主语 + 过去分词 + （ by … ） ?

特殊疑问句 疑问词 + be + 主语 + 过去分词

+ （ by … ） ?

Exercises

1. 纸是中国发明的。 Paper ________ ________ (invent) in

China.

2. 这栋大楼是去年建造的。 The building ________ ________ (build)

last year.

3. 世界上许多国家都讲英文。 English ________ ________ (speak) in

many countries all over the world.

was invented

was built

is spoken

4. The TV was invented by an Englishman.

( 就画线部分提问 )

________ ________ the TV invented ______?

5. The telephone was invented in 1876. ( 就画线 部分提问 )

________ ________ the telephone ________?

Who was by

When was invented

What do you think is the most helpful / annoying inventions?Name Helpful

inventions

Why Annoying inventions

Why

Language Points:1. annoying adj. 讨厌的 , 恼人的 ( 往往指事物 )

How annoying it is! 真讨厌。

annoyed adj. 生气的 , 恼怒的 ( 往往指人 )

My father is annoyed with me.

爸爸在生我气。

2. helpful adj. 有帮助的 , 有益的 Mr White is a very helpful man.

构词法： n. + ful → adj.

再如 : use + ful → useful

thank + ful → thankful

beauty + ful → beautiful

care + ful → careful

alarm clock

It’s an annoying invention. Because it

wakes me up when I’m sleeping.

I think computer is the most helpful

invention. Because it helps me search

for

the information that I need.

Sample dialogue:

A: What do you think is the most helpful / annoying invention?B: I think the most helpful invention is …A: Why is that?B: Well, it gives / helps people …

Useful expressions: I think the most helpful invention is … I’d like to have a … because I could … It’s used for … I also want a … because it …

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 ...

学习效果评价Exercises: 句型转换

1. She was seen to come out of the library by him.

（变为主动语态） He _______ _______ _______ out of the library.

2. When are trees often planted? （变为主动语态） When _______ people often _______ _______?

3. The League was founded in Guangzhou in 1922.

（就画线部分提问） _______ _______ _______ _______ the League

_______?

saw her come

plant treesdo

When and where was

founded

4. Did the students wear the school clothes a lot?

（变为被动语态） ______ the school clothes ______ a lot?

5. Kate took good care of the baby yesterday

evening. （变为被动语态） The baby ______ ______ good care of ______

Kate yesterday evening.

was taken by

Were worn

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 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.

请把下列主动句变为被动句。

1. The water is __________ (boil) now.

2. Who were they ___________ (discover) by?

3. It’s ___________ (use) for scooping really

cold ice cream.

4. What do you think is the best __________

(invent)?

用所给词的适当形式填空。

boiling

discovered

used

invention

5. This much loved sport is __________ (enjoy) by

young people.

6. Do you think the alarm clock is an __________

(annoy) invention?

7. It __________ (play) by more than 100 million

people in over 200 countries including China.

8. Tea ________________ (not bring) to the Western

world until 1610.

enjoyed

annoying

is played

was not brought

1. A Knife is used for ______ things.

A. cutting B. cut C. cuts D. to cut

2. Anna is ______ to choose her own clothes .

A. allowed B. allows C. allowing D. allow

3. He finished the homework ______.

A. by the end B. to the end

C. in the end D. at the end

4. Pens ______ writing .

A. used to B. are used as

C. are used by D. are used for

选择填空。

A

A

C

D

5. ______ is / are used for seeing in the dark .

A. The shoes with adjustable heels

B. The battery-operated slippers

C. The heated ice cream scoop

D. The flying disk

6. — I can’t wake up in the morning. What shall I do?

— Buy ______ — it may help.

A. a light bulb B. a microwave oven

C. an alarm clock D. a binoculars

B

C

7. — Your city looks beautiful!

— Yes. Lots of trees and grass ______ last year.

A. are planted B. have planted

C. were planting D. were planted

8. — Where is Mary?

— She ______ in the cinema an hour ago.

A. saw B. sees C. is seen D. was seen

D

D

Go for it ！

　　 HOMEWORKOral: Recite the dialogs in Section A.Written: Make sentences with the words: invent, use, helpful and annoying.