Unit 9 When was it invented?（Section A 1a-2c）

(共34张PPT)
Unit 9
When was it invented
Section A
Talk about the history of inventions.
The passive voice.
Language Goals:
Grammar Focus:
Let’s make up
some puzzles
Here is a box. You can use it to cook many kinds of delicious food, such as fish, chicken, meat and rice. You can also use it to make cold dish and food hot in a few minutes.
Let’s make up some puzzles
This little thing has got numbers from 0 to 9. It is very small, so you can put it into your pocket. Wherever you go, you can use it to talk to your friends and your families far away.
Here is a big box. It can make your clothes clean and your housework easy. With its help you can have more time to relax or to work .
Play a guessing game
Was the …invented in…/…ago
The abacus was invented in the sixth century by Chinese people. The umbrella was invented about 4,000 years ago in Assyria, China and Egypt. The binoculars was invented in 1854 by Galileo Porro in Italy. The camera was invented in 1827 by Joseph Nicephore Niepce who took the first picture. The bicycle was invented in 1880s in England.
1b
Listen and match the inventions
with the dates.
a
b
e
d
c
1876
1885
1927
1971
1976
d
a
b
e
c
1c
1c
When was the telephone invented
I think it was invented in 1876.
Julie Thompson
battery-operated
slippers
Chelsea Lanmon
heated ice
cream scoop
Jayce Coziar and Jamie Ellsworth
shoes with adjustable heels
The history of chips
Listening (2a, 2b: P71)
The potato chips were invented by
mistake.
2. They were invented in 1863.
3. The customer thought the potatoes weren’t thin enough.
T
F
T
4. The customer said they weren’t
salty enough.
5. George wanted to make the
customer happy.
6. The customer was happy in the
end.
T
F
F
_____________that potato chips were invented by mistake Chips ______
_________by a chef called George Crum. They were invented in______. George Crum cooked them for a long time until they ___________And he sprinkled lots of salt on them so they were__________.
The history of chips
Did you know
were invented
1853
were crispy
really salty
Make up a short dialogue about the history of potato chips with your partner.
和你的同伴一起编排一段有关薯片历史的对话
1. 电拖鞋是什么时候发明的？
When _____ the electric ________ invented
2. 它们是由谁发明的？
______ were they invented ______
were
slippers
Who
by
The passive voice.
被动语态
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.
被动语态的构成:
助动词be+ (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
{
The passive voice.
被动语态
被动语态的用法:
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 American.
2. 不必要说出动作执行者时,常用.
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 (污染).
The passive voice.
被动语态
主动语态变为被动语态的步骤:
把原主动句中的宾语转换为被动语态的主语.
2.把动词改为被动形式,即 “be + 过去分词” . 注意 be
动词要按新的主语的人称和数进行变化,时态要和原来
的主动语态的时态保持一致.
3. 原来主动语态句中的主语,如果需要,就放在by后面
以它的宾格形式出现. 如果没有必要就可以省略.其他的
成分 (定语,状语) 不变, 句式也不能变.
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
The passive voice.
被动语态
主动语态改被动语态:
Bell
invented
the telephone
in 1876.
was
by
1.I open the door.
The door is opened by me.
2.He often helps homeless people.
Homeless people are often helped by him.
3.I handed out some papers just now.
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：
(主动语态)
(主动语态)
(主动语态)
(被动语态)
(被动)
(被动语态)
be+过去分词
将下列句子变为被动语态。
把下列句子变成被动句
1. Bell invented the telephone.
2. Tom bought some books yesterday.
The telephone was invented by Bell.
Some books were bought yesterday.
3. They visited the city last year.
4. Mr Green often invites me to his house.
5. People all over the world love football.
The city was visited by them last year.
I am often invited by Mr Green to his house.
Football is loved by people all over the world.
6、They have grown rice in South China.
7. We must plant more trees next year.
8.I am going to clean our classroom tomorrow.
More trees must be planted next year.
Our classroom is going to be cleaned tomorrow.
Rice has been grown in South China.
把被动句变疑问.
Has rice been grown in South China？
变被动语态的特殊情况
一、双宾语
buy/make sb sth
=buy/make sth for sb
give sb sth
=give sth to sb
1.My father bought me a computer.
A computer was bought for me by my father.
I was bought a computer by my father.
2.He gives me a book.
A book is given to me by him.
I am given a book by him
Sth+be+ 过去分词+ for/to sb+ by sb.
Sb + be+ 过去分词 sth + by sb
二、无to不定式
一感 二听
三让
四看
feel
listen to.hear
let.have.make
watch. see.look at. notice
变为被动时加上to
eg. We often see him play basketball.
He is often seen to play basketball by us.
The boss made the children work for long.
The children were made to work for
long by the boss.
三、注意动词短语的
常考到的动词短语有
完整性
take care of
look after
listen to
speak to
eg. 1.We should speak to the old politely.
The old should be spoken to politely.
2. The nurse takes good care of the baby.
The baby is taken good care of by the nurse.
四、无被动语态的动词。
不及物动词及系动词
happen
take place
die
rise
come true
come out
eg.1. An accident (happen) just now.
happened
2. I’m sure that my dream .
(come true) some day in the future
will come true
常用的被动语态短语
be made of
from
into
be used to do
for doing
as
由--制成的
看出原材料
看不出原材料
原材料制成成品
be filled with
be covered with
eg. 1.Paper is made wood.
from
2.Tables are made wood.
3.Wood is made paper and tables.
of
into
被用来--
被用作
用--充满
被--覆盖
HOMEWORK