(共56张PPT)
Unit 6
When was it invented
Section A 第一课时
Can you read
heel /hi:l/ n. 鞋跟；足跟
electricity /ilektris ti/ n. 电；电能
scoop /sku:p/ n. 勺；铲子
style /stail/ n. 样式；款式
project /pr dzekt/, /pra:dzekt/ n. 项目；工程
pleasure /plez (r)/ n. 高兴；愉快
zipper /zip (r)/ n. (= zip) 拉链；拉锁
daily /deili/ adj. 每日的；日常的
website /websait/ n. 网站
pioneer /pai ni /, /pai nir/ n.先锋；先驱
list /list/v. 列表；列清单n. 名单；清单
mention /menSn/v. 提到；说到
Which do you think is the most
important invention in the world
What others can you think of
TV telephone radio
computer calculator car
Do you know what they are
computer
radio
television
calculator
telephone
car
1a. Groupwork
Look at the things below. In what orders do you think they were invented Number them [1-5]
5
2
4
1
3
1b. Listen and match the inventions
with the dates.
1885
1976
a
b
1876
d
1b Alice: Was your life very difficult when you we re a kid
Grandma: Oh, not really. Why
Alice: Well, you didn’t have modern inventions like a telephone, right
Grandma: Of course we did! How old do you think I am The telephone was invented in 1876. You need to take a history class, Alice!
Alice: Haha! How about cars They weren’t invented yet, were they
Grandma: Yes, they were. Cars were invented in 1885. My family had a car.
Alice: Well, did you have a TV
Grandma: No, we couldn’t afford one. They were expensive in those days. The TV was invented around 1927, I think.
Alice: Well, I know that you didn’t have a computer because we learned in school that personal computers were invented in 1976.
Grandma: You’re right. But I have one now!
According to what you have listened,
answer the questions below.
1. What did the grandma have when she was young
2. Why didn’t they have a television at that time
3. Does grandma have personal computer now
Telephone and car.
Because it was expensive.
Yes, she does.
1c. Pairwork
When was the computer invented
I think it was invented in 1976.
______
Shoes with
special
heels
_______
shoes with
lights
_______
ice cream
scoop runs
on electricity
2a.Listen and number the inventions in the order.
3
1
2
2b. Listen again and match the items in
columns.
Invention What is it/are they used for
shoes with special heels _____ the style of the shoes
Shoes with lights seeing ___________
Hot ice cream scoop ______ really cold ice cream
2b. Listen again and match the items in
columns.
Invention What is it/are they used for
shoes with special heels changing the style of the shoes
Shoes with lights seeing in the dark
Hot ice cream scoop scooping really cold ice cream
Alex: Hi, Carol. Wow, what are those
Carol: Hello, Alex. Oh, these are some of the interesting inventions that I’m writing about for my English homework.
Alex: I see…What’s that, then
Carol: They’re shoes with lights. People use them for seeing in the dark when you get up at night.
Alex: Oh, that’s a cool idea! I always hit my toe on something on the way to the bathroom at night.
Carol: Next is a special ice-cream scoop. This is my favorite invention. It runs on electricity and becomes hot.
Alex: I know what it’s for! It’s used for serving really cold ice-cream
Carol: Yes, that’s right! The last invention I’m going to write about is shoes with special heels. You can move the heels up and down.
Alex: What are they used for
Carol: Well, you can change the style of your shoes. You can raise the heels if you are
going to a party or lower them if you
are just going out for shopping.
2c. Pairwork
What is it used for
It is used for seeing in the
dark.
2d. Role-play the conversation
Grammar focus
When was the car invented It was invented in 1885.
When were electric slippers invented They were invented last year.
Who were they invented by They were invented by Julie Thompson.
What are they used for They’re used for seeing in the dark.
The passive voice
一、语态
英语中动词有主动语态和被动语态两种语态。
主动语态表示主语是动作的执行者，被动语态表示
主语是动作的承受者，在被动语态中动作 的执行者
有时用by短语表示出来。
二、被动语态的构成
助动词be+及物动词的过去分词
am(is,are)+done 一般现在时
was(were)+done 一般过去时
三、被动语态的用法
1. 不知动作执行者时，常用被动语态。
eg. My bike was stolen yesterday.
This car is made in America.
2. 不必要说出动作执行者时，常用被动语态。
eg. Rome was not built in a day.
3. 为了突出强调动作的承受者时，常用被动语态。
eg. Thousands of beaches are polluted .
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)主动语态的主语变为by的宾语。
主动语态变为被动语态的步骤
主动语态改被动语态
Bell
invented
the telephone
in 1876.
was
by
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
They produced that kind of car.
The workers built a bridge over the river.
Mother tells me a story every day.
请把下列主动句变为被动句。
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.
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.
练习: 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 didn’t wash clothes yesterday.
9. Students listen to the kind teacher carefully.
10.When did your father took you to the park.
Homework
Make a list of as least five helpful inventions and five annoying inventions. Write them down on the form on the book.
