Unit 6 When was it invented?SectionA 3a-4c 课件(共28张PPT)

(共28张PPT)
Unit 6
When was it invented
Section A 3a-4c
单词展示
n. 冰箱
fridge
n. 曲奇饼
cookie
n. 地震
earthquake
Grammar Focus
When was the zipper invented
It was invented in 1893.
Who was it invented by
It was invented by Whitcomb Judson.
When was tea brought to Korea
It was brought to Korea during the 6th and 7th centuries.
What is the hot ice-cream scoop used for
It’s used for serving really cold ice-cream.
Look at the title and the picture in the passage and then predict (预测) what the passage is about.
An Accidental Invention
Chinese people like drinking tea.
3a
Read the passage quickly and match each paragraph with its main idea.
Para. 1
Para. 2
Para. 3
Lu Yu and his book Cha Jing
How tea spread to other countries
How tea was invented by accident
1. When was tea first drunk
2. Who is called "the saint of tea"
3. What is Cha Jing about
Read the passage again and answer the questions.
It was first drunk about 5,000 years ago.
Lu Yu is called “the saint of tea”.
It describes how tea plants were grown and used to make tea.
1. Tea was brought to Korea and Japan
during _________________________.
2. In England, tea didn’t appear until
around _____________.
3. The tea trade from China to Western
countries took place in the ____________.
the 6th and 7th centuries
1660
19th century
Read Para. 3 and complete the sentences.
1. One of the world’s favorite drinks was _________ by accident.
2. Tea was first ________ by Shen Nong about 5,000 years ago.
Complete the sentences with the correct forms of the verbs in the box.
invent, drink, bring, produce, trade
invented
drunk
3c
3. A nice smell was _________ when the tea leaves dropped into the hot water.
4. Tea was ________ to Korea and Japan during the 6th and 7th centuries.
5. Tea is now ________ between many different countries.
traded
produced
brought
invent, drink, bring, produce, trade
When was the zipper invented It was invented in 1893.
Who was it invented by It was invented by Whitcomb Judson.
When was tea brought to Korea It was brought to Korea during the 6th and 7th centuries.
What is the hot ice-cream scoop used for It’s used for serving really cold ice-cream.
Active Voice: Alexander Graham Bell invented the telephone in 1876. Passive Voice: The telephone was invented (by Alexander Graham Bell) in 1876.
一般过去时的被动语态
一般过去时被动语态结构：
was/were +过去分词
last year.
2.We planted many trees last year.
Many trees
were planted
by us
1.They bought a camera last term．
by them last term.
A camera
was bought
The passive voice.
被动语态
主动语态变被动语态的结构图:
Bell invented the telephone in 1876.
The telephone was invented by Bell in 1876.
主语
谓语动词过去时
宾语
时间状语
主语
谓语动词的过去分词
宾语
时间状语
Rewrite the sentences using the passive voice.
4a
They sold the fridge at a low price.
_______________________________
2. Somebody stole my camera from my hotel room.
_______________________________
3. Where did you take these photos
_______________________________
The fridge was sold at a low price.
My camera was stolen from my hotel room (by somebody).
Where were these photos taken
pron.某人；重要人物
4. Our parents advised us not to go out alone.
______________________________________
5. Different writers translated the book into different
languages.
_________________________________________
We were advised by our parents not to go out alone.
The book was translated into different languages by different writers.
v.翻译
4b
Complete the sentences with the correct forms of the verbs in the box.
1. You ____________ to the party last night, weren’t you
Why didn’t you go
2. The earthquake happened all of a sudden, but luckily the
villagers _____________to a safe place.
eat like invite tell lock ring break bring
were invited
were brought
突然；猛地
3. The door ____________ when we arrived, so we
_______ the bell.
4. The students _________ not to eat or drink in class,
but Ruby _________ the rule when she started eating
a biscuit in science class.
5. The cookies ___________by the hungry kids in
less than 20 minutes, and they really ______them.
was locked
rang
were told
broke
were eaten
liked
4c
Decide whether active or passive forms should be used in these sentences. Write the correct forms in the blanks.
The telephone ___________ (invent) by Alexander Graham
Bell. He __________(born) in 1847. Mr. Bell _________
(work) on the invention of the telephone with Thomas Watson. In 1875, Mr. Bell ___________ (learn) how to send musical notes through an instrument similar to a telephone.
was invented
was born
worked
learned
adj.音乐的；有音乐天赋的
n.器械；仪器；工具
Finally, the telephone _______________ (invent) in 1876. The first sentence that _________ (say) on the telephone by Mr. Bell was “Mr. Watson, come here; I want to see you.” Today the telephone _____________ (use) around the world.
was invented
was said
is used
随堂练习
Ⅰ.根据句意及汉语提示完成句子。
1．The boy lost his parents during the last year's ___________(地震)．
2．The students were asked to __________(翻译) the story into English.
earthquake
translate
3．The police found the lost boy under the destroyed house through an ___________(仪器)．
4．I only have some _________(饼干) and a glass of milk every morning.
5．If you can't eat all these fruit，you may put some into your ________(冰箱)．
instrument
biscuits
fridge
1. My students always shared ideas in class last year.(改
为被动语态)
Ideas _____ always _______ by my students in class
last year.
2. We finished the whole project. (改为被动语态)
The whole project _____ _____ by us.
were shared
was finished
26
贝尔于1876年发明了电话机。
Alexander Graham Bell _________ the telephone in 1876.
电话机在1876年被贝尔所发明。
The telephone _____ ________ _____
Alexander Graham Bell in 1876.
Exercises
invented
was invented by
把下列句子变成被动语态的句子。
They planted these trees on weekends.
These trees _____ ______ on weekends.
The workers built the bridge in 1968
_____ _______ _____ built by the workers in 1968.
were
planted
The
bridge
was
be + done
主动语态变被动语态的步骤：
1. 主动语态的宾语变为被动语态的主语；
2. 主动句的谓语动词变为被动结构；
3.被动语态的否定句，一般疑问句和时态的转换要靠be动词来完成。即：否定句在be动词后面加not,一般问句be动词提前。
4. 主动句的主语变为被动句的宾语，由by引出，当不强调动作的执行者时，常省略。
小结