(共39张PPT)
Unit 6
When was it invented
Section A (2d,Grammar Focus-4c)
初中英语 人教版 九年级上册
Read the passage quickly and answer the questions.
What is the subject for their school project
2. What kind of invention does Roy think of
Small inventions that changed the world.
The zipper.
2d
Role play
3. Why does Roy think it is a great inven-
tion
4. When was the zipper invented
5. When did the zipper become popular
Because it is often used in our daily lives.
It was invented in 1893.
Around 1917.
Role play
1. Well, you do seem to have a point…
have a point 有道理
e.g. I admit (that) you have a point.
我承认你有理。
Language Points
2. They are used for seeing in the dark.
be used for doing sth. 表示“被用来做某事”。 = be used to do sth. 表示用途、目的。
e.g. This computer is used to control all the
machines.
这台电脑是用来控制所有机器的。
Do you know what this tool is used for
你知道这个工具是用来做什么的吗
Language Points
3. Think about how often it’s used in our
daily lives.
think about 表示“考虑，想起”。
e.g. He is thinking about travelling in the
summer holidays.
他正在考虑暑假旅游的事。
She was thinking about her childhood
days. 她正在回想她的童年时期。
Language Points
【拓展】有关think的短语
think of 指“考虑, 记忆, 记起” I can’t think of his name at the moment.
我一时想不起他的名字。
think sth. over 指“仔细想, 审慎思考, 作进一步考虑” Please think over what I said. 请仔细考虑我说的话。
think sth. out 指“想通, 想出, 熟思” He thought out a new idea. 他想出了一个新主意。
Language Points
I.用所给单词的正确形式填空。
When the telephone (invent)
The computer can us do math problems (help).
invented
was
help
Exercises
Exercises
II.单项选择。
( ) 1. The kind of cup is used _______ drinking.
A. to B. as C. by D. for
( ) 2. My mother and my sister kept on talking, but my father ________ silent all the time.
A. got B. kept
C. turned D. looked
D
B
Exercises
( )3.I think the short story ______by Lu
Xun.
A. is writing B. is written
C. written D. was written
( )4.—Who _____ the electric light
lamp_____ —Edison.
A. was; invented B. is; invented
C. was; invented by
D. did; invented by
D
C
Exercises
★Used the Passive Voice to talk about the history of some inventions.
1.—When was the telephone invented
— I think it was invented in 1876.
2.—What are they used for
—They are used for…
3. —What is it/are they used for
—It's/They're used for…
Summary
根据课本内容，完成下列句子。
1. 拉链是什么时候被发明的？
______ _____ the zipper ________
2. 它于1893年被发明。
It ______ _________ in 1893.
was invented
When was invented
Grammar Focus
Grammar Focus
3. 它是由谁发明的？
______ _____ it invented ______
4. 它是由惠特科姆 贾得森发明的。
It ____ ________ ___ Whitcomb Judson.
5. 茶叶什么时候被带到朝鲜去的？
_____ ______ tea _________ to Korea
was invented by
When was brought
Who was by
Grammar Focus
6. 是在六到七世纪之间被带到朝鲜。
It _____ _______ to Korea ________the 6th and 7th centuries.
7. 热冰淇淋勺用来做什么？
What ___ the hot ice-cream scoop
_____ _____
8. 它用来挖很冷的冰淇淋。
It’s _____ ____ ______ really cold
ice-cream.
used for serving
is
used for
was brought during
Grammar Focus
9. 贝尔于1876年发明了电话机。
Alexander Graham Bell _________ the telephone in 1876.
10. 电话机在1876年被贝尔所发明。
The telephone _____ ________ _____
Alexander Graham Bell in 1876.
invented
was invented by
Grammar Focus
英语有两种语态：主动语态和被动语态。主动语态表示主语是动作的执行者，而被动语态则表示主语是动作的承受者。
e.g. We cleaned the classroom yesterday.
(主动语态，主语we是clean这一动作的执行者)
The classroom was cleaned yesterday.
(被动语态，主语the classroom是clean这一动作的承受者)
Grammar Focus
一般过去时被动语态的结构为“主语+ was /were +及物动词的过去分词(+by+动作的执行者).”。如：
Trees were planted last spring.
去年春天种了树。
一、一般过去时被动语态
Grammar Focus
1. 肯定句：
主语+was / were+及物动词的过去分词+其他.
e.g. Paper was invented by Chinese people two thousand years ago.
纸是中国人在二千多年前发明的。
Grammar Focus
2. 否定句：
主语+ was/were not+及物动词的过
去分词+其他.
e.g. Women were not allowed to take part in the games at first.
开始妇女不允许参加奥运会。
Grammar Focus
e.g. Was this picture drawn by your sister
这幅画是你妹妹画的吗？
3. 一般疑问句：
Was/Were +主语 +及物动词的过去分
词+其他
Grammar Focus
1. 不知道谁是动作的执行者，或没有必要指出谁是动作的执行者。
e.g. English is spoken all over the world.
全世界都在说英语。
2. 需要突出或强调动作的承受者。
e.g. This dictionary is used by most students.
这本字典是大多数学生在用的。
二、被动语态的用法：
Grammar Focus
1. 有些短语动词相当于及物动词，变为被动句时介词或副词不能去掉。
e.g. They put off the meeting because of the weather.
→ The meeting was put off because of the weather.
会议因天气的缘故被推迟了。
三、主动语态变被动语态应注意的问题
Grammar Focus
2. 含有双宾语的主动句变为被动句时，通常把指“人”的间接宾语变为主语，指“物”的直接宾语保留不变；如果把指“物”的直接宾语变为主语，则在间接语前加to或for。
e.g. My aunt gave me an e-dictionary yesterday.
I was given an e-dictionary yesterday.
An e-dictionary was given to me
yesterday.
Grammar Focus
3. 主动句中感官动词see / hear / watch / feel等和使役动词make / let / have等后跟省略to的动词不定式，变为被动语态时应加上不定式标志to。
e.g. I saw a heavy man enter the house.
A heavy man was seen to enter the house.
Grammar Focus
4. 系动词、不及物动词或某些短语动词（happen, take place, come true, fall asleep…）没有被动语态。
e.g. What happened to Mr. Brown
布朗先生发生了什么事？
Grammar Focus
将下列句子变为被动语态。
1. He chose six story books the other day.
Six story books _____ _______ by him the other day.
2. Uncle Lee gave Jack a large cake for he painted the wall wonderfully.
Jack _____ _____ a large cake for he painted
the wall wonderfully.
was given
were chosen
Exercises
Exercises
3. A mouse ate half of the cake last night.
Half of the cake _____ _____ by a
mouse last night.
was eaten
将下列句子变为主动语态。
4. Were these machines invented by Edison
_____ Edison _______ these machines
Did invent
Exercises
5. The post card was sent to Linda by Paul.
Paul _____ the post card ___ Linda.
6. America was discovered by Columbus.
Columbus __________ America.
sent to
discovered
Exercises
对画线部分提问。
7. Shoes with lights were used for seeing in the dark.
_____ ______ shoes with lights ______ for
8. Paper was invented in China almost a thousand years ago.
______ _____ paper _________ in China
used
What were
When was invented
Exercises
Rewrite the sentences using the passive voice.
【点拨】原句为一般过去时态，原句的谓语动词为sold，宾语为the fridge；改为被动语态时，应将the fridge作主语，谓语动词用was sold的形式。
1. They sold the fridge at a low price.
The fridge was sold at a low price.
4a
Practice
【点拨】分析原句的句子结构可知，stole是谓语动词，my camera是句子的宾语；改为被动语态句时，应将my camera作句子主语，谓语动词用was stolen的形式。
2. Somebody stole my camera
from my hotel room.
_________________________________
_________________________________
My camera was stolen from my hotel room.
Practice
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.
__________________________________
__________________________________
Where were these photos taken
We were advised not to go out alone by our parents.
The book was translated into different languages by different writers.
Practice
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.
were invited
eat, like, invite, tell, lock, ring, break, bring
were brought
Complete the sentences with correct forms of the verbs in the box.
4b
Practice
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
broke
were told
were eaten
liked
Practice
The telephone ______________ (invent) by Alexander Graham Bell. He __________ (born) in 1847. Mr. Bell ________ (work) on the invention of the telephone with Thomas Watson.
was born
was invented
worked
Decide whether active or passive forms should be used in these sentences. Write the correct forms in the blanks.
4c
Practice
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.
learned
was invented
was said
is used
Practice
Learned the story of the invention of tea.
Learned the Active Voice and the Passive Voice (past tense)
Summary
Homework
Preview the passage in 3a.
Look for some information about some famous inventions.
Thank you
