Unit 6 When was it invented ? Section A Grammar focus 4a—4c 课件18张

(共18张PPT)
Unit6 When was it invented?
(Grammar)
invention “发明”
The four great inventions of ancient China
papermaking
technology
printing
gunpowder
compass
Old inventions
The new four great inventions of China
online
shopping
high-speed
railways
mobile
payment
shared
bikes
New inventions
A small invention
potato chips
What do you know about potato chips?
Potato chips by many people.
It that potato chips are more than 150 years old.
Even today potato chips still by most people.
They by accident in 1853.
The inventor George Crum.
One day, he to serve fried potatoes by a customer.
When the potatoes came, the customer thought they too thick.
The potatoes for a long time until they were crispy.
Potato chips to be the most popular snacks.

are loved
’s said
are
enjoyed
were invented
was called
was asked
were cut
were cooked
were considered
Passive voice in the simple past tense
一般过去时中的被动语态
was/were done
Sructure：
谓语构成
1.The telephone (invent) in1876.
2.Yesterday the rooms (clean) by Tom .
was invented
were cleaned
eat, like, invite, tell, lock, ring, break, bring
4b
Complete the sentences with 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.
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.
v. 锁上 n. 锁
突然;猛地
v. (使)发出钟声或铃声；打电话
n. 钟声;铃声
n. 饼干
n. 曲奇饼
were invited
were brought
was locked
rang
broke
were told
were eaten
liked
Tom
cleaned
yesterday
the rooms
Active voice
Passive voice
by Tom
was cleaned
The rooms
Tom
cleaned
yesterday
the rooms
by Tom
were cleaned
The rooms
yesterday
How to change active voice into passive voive.
如何将主动语态改成被动语态
4a
Rewrite the sentences using the passive voice.
1. They sold the fridge at a low price.
_________________________________________________________
2. Somebody stole my camera from my hotel room.
_________________________________________________________
3. Where did you take these photos?
_________________________________________________________
4. Our parents advised us not to go out alone.
________________________________________________________
5. Different writers translated the book into different languages.
_________________________________________________________

n. 冰箱
adj. 低的;矮的
pron.
某人

v. 翻译
The fridge was sold (by them) at a low price .
My camera was stolen (by somebody)from my hotel room .
Where were these photos taken (by you)?
We were advised by our parents not to go out alone.
The book was translated into different languages by different writers.
Decide whether active or passive forms should be used in these sentence. Write the correct forms in the blanks.
4c
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. 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.

adj. 音乐的;有音乐天赋的
n. 仪器;工具
was invented
was born
worked
learned
was invented
was said
is used
Student 1:
Draw a picture of the invention.
Introduce the name of the invention.

Student 2,3, 4:
Write down as many sentences as possible by using passive voice.
Hello, everyone! Let me tell you something about our invention.
.
.
.
.
.
.
……
(more information)

Create our own inventions
memory
bread
Hello, everyone! Let me tell you something about my invention.
It was called memory bread.
It was invented by Maggie .
It is used to help people memorizing anything they want.
It can help a lot when you are asked to memorize some English words.
When you use it, you are supposed to cover the words with the bread, and eat it.
Then the words can be remembered very easily.
Do you like my invention?
Student 1:
Draw a picture of the invention.
Introduce the name of the invention.

Student 2,3, 4:
Write down as many sentences as possible by using passive voice.
Hello, everyone! Let me tell you something about our invention.
.
.
.
.
.
.
……
(more information)

Create our own inventions
Which invention is your favorite?
Why?
Why?




Who?
Inventions can make our life .
Anyone who .
必做：
Write a short passsage about “My favorite invention”.
(Using the passive voice)

选做：
Find more information about the four great inventions in
China.(when, what, who…)

Tom
cleaned
Yesterday
the rooms
Active voice
Passive voice
by Tom
was cleaned
The rooms
Tom
cleaned
Yesterday
the rooms
Yesterday