Unit 6 When was it invented Section A 4a-4c 课件(共27张PPT)

(共27张PPT)
Unit 6 When was it invented Section A 4a-4c
● To learn Passive voice in past tense
● How to use the passive voice to talk about
everyday things.
Learning Objectives
Revision
1.偶然；意外的
2.发生；发现
3.毫无疑问
4.少于；不超过
5.落入；陷入
by accident
take place
without doubt
less than
fall into
Free-talk
A: When was the tea invented
B: ......
A: Who was it invented by
B: ...
A: How was the tea invented
B: ......
About 5000 years ago.
When was the tea invented
Who was it invented by
It was by Shen Nong.
It is said that one day Shen Nong was boiling drinking water over an open fire. Some leaves fell into the water . It produced a nice smell. He tasted the water, it was quite delicious, and so the tea was invented.
How was the tea invented
Presentation
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.
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
[探究]一般过去时的被动语态
1.概念：当主语是动作的承受者时，且动作发生在过
去，就要用一般过去时的被动语态。
2.结构：was/were+ 及物动词的过去分词。
[探究] 被动语态的用法
用法 例句
不知道或没必要指出
动作的执行者
These books were written for children.
这些书是为儿童写的。
强调或突出动作的
承受者
The book was written by Mo Yan.
这本书是由莫言写的。
动作的执行者不是人
而是无生命的事物
Many traffic accidents were caused by
careless driving.很多交通事故是由
粗心驾驶造成的。
一般过去时的被动语态句式结构：
句式 结构
肯定句
否定句
一般疑问句 及回答
特殊疑问句
主语+ was/were+及物动词的过去分词
主语+ wasn’t/ weren’t及物动词的过去分词
Was/Were +主语+及物动词的过去分词
肯定回答: Yes, 主语+ was/ were.
否定回答: No, 主语+wasn’t/ weren’t.
特殊疑问词+ was/were+主语+过去分词
主动语态和被动语态的相互转化
主动句：动作的执行者（主语）+谓语动词+动作的
受者（宾语）
被动句：动作的承受者（主语）+be+及物动词的过去
分词+by+动作的执行者
[巧记]：宾语提前主语变，原主变宾by后见，时态人
称be关键
活学活用
Lily didn’t invite me to the party. (变被动语态)
I ______ ______ to the party ____ Lily.
wasn’t invited by
[拓展]：含有双宾语的主动句变被动句
含双宾语的主动结构变为被动结构时，既可将间接宾语
转化为主语，也可将直接宾语转化为主语。若将间接宾
语转化为主语，则保留直接宾语；若将直接宾语转化为
主语，则保留间接宾语，且在被保留的间接宾语前加上
介词to或for。
主动语态和被动语态的相互转化
My brother gave me a book.
→ I was given a book by my brother.
→ A book was given to me by my brother.
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
Do you know Alexander Graham Bell
I know that the telephone was invented by him.
Yes! When was he born
He was born in 1847.
Let’s know more about him!
亚历山大·格雷厄姆·贝尔，电气工程学家、发明家、企业家和聋哑教育家，出身于苏格兰，1870年移民加拿大，而后移居美国，在波士顿大学工作。
贝尔的父亲从事聋哑人教育工作。受父亲的影响，贝尔从小就对语言和声音传播很有兴趣。在一次做电报实验时，他发现一块铁片在磁铁前面振动发出的微弱声响竟通过导线传到了远处。这个现象给了贝尔很大的启示。
Let’s know more about him!
1875年贝尔发明了电话，随后经过不断实验、改进，终于在1876年3月通过他发明的装置传出了人类在电话机上说的第一句话。为此他申请并获得了世界上第一台可用电话机的专利权，而后他创建了贝尔电话公司（AT&T公司的前身）。
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
Exercises
was finished
Summary
一般过去时
的被动语态
否定句
一般疑问句
肯定句
结构：
主动语态 被动语态
特殊疑问句
GOOD JOB