Unit 6 When was it invented? Section A (Grammar focus-4c)课件(共20张PPT)

(共20张PPT)
英语（人教版）
九年级全册
English
Section A（Grammar focus-4c）
Unit 6
When was it invented
Free-talk
A: When was the tea invented
B: ......
A: Who was it invented by
B: ...
A: How was the tea invented
B: ......
1
课堂导入
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
Read the following sentences and find out the common features.
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.
Grammar Focus
2
课堂活动
一般过去时的被动语态由“was/ were +及物动词的过去分词”构成。
The mobile phone has greatly influenced people’s life since it was invented.
These books were written for children.
一般过去时的被动语态的构成
1.表示过去某一具体时间发生的动作，且句子的主语是谓语动词动作的承受者
2.讲述发生在过去的动作，且不知道动作的执行者
句式 结构 例句
肯定句 主语+ was/ were +过去分词. The club was set up in 2010.
否定句 主语+ wasn’t/ weren’t +过去分词. I wasn’t told to attend the meeting yesterday.
一般疑问句及回答 Was/Were+主语+过去分词 肯定回答: Yes, 主语+ was/ were. 否定回答: No, 主语+wasn’t/ weren’t. — Were the trees planted last year
— Yes, they were./
No, they weren’t.
特殊疑问句 特殊疑问词+ was/were+主语+过去分词 When was the bridge completed
一般过去时的被动语态的句式
（1）含双宾语的主动结构变被动结构时，不要忽略间接宾语前的介词。
We gave some flowers to Miss Gao on Teachers’ Day.
→ Some flowers were given to Miss Gao on Teachers’ Day.
（2）含有动词短语的主动结构变被动结构时，不要漏掉短语中的介词或副词。
We handed in our homework last Friday.
→ Our homework was handed in last Friday (by us).
使用被动语态时的注意事项
（3）在含有使役动词make或感官动词（see, watch, notice, hear 等）的主动语态 的句子中，这些词后常跟省略to的动词不定式，但是改为被动语态时则要 把省去的to还原。
I saw him cross the road and enter the shop.
→ He was seen to cross the road and enter the shop (by me).
使用被动语态时的注意事项
（4）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。
My mother gave me a pencil.
→ I was given a pencil by my mother.
→ A pencil was given to me by my mother.
使用被动语态时的注意事项
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.
_______________________________________________________________
4a
The book was translated into different languages by different writers.
My camera was stolen from my hotel room (by somebody).
Where were these photos taken
We were advised by our parents not to go out alone.
The fridge was sold at a low price.
Complete the sentences with the correct forms of the verbs in the box.
4b
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.
were invited
eat like invite tell lock ring break bring
were brought
was locked
rang
were told
broke
were eaten
liked
Decide whether active or passive forms should be used in these sentences. 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.
was invented
was born
worked
learned
was invented
was said
is used
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。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）。除此之外，贝尔还制造了助听器，改进了爱迪生发明的留声机，设计出一个检验人体内金属的装置，成为X光机的前身。
在教育及社会工作方面，贝尔继承父业，致力于聋哑教育，对聋哑语的发明贡献甚大，他写的文章和小册子超过100篇（本）。他还是美国“国家地理学会”（National Geographic Society）和《科学》（Science）杂志的创办人。
亚历山大·格雷厄姆·贝尔（Alexander Graham Bell，1847-1922）
3
课堂小结
1.We have learnt and practiced the passive voice of the past tense.
2.We have learnt some new words and expressions in this part.
You can’t __________ （翻译）every English word into Chinese, and it’s not good for your English study.
We were talking on the phone. _________ (sudden), the line went dead.
Look! The water in the pot is b_________.
Thousands of people go to Tian’anmen Square and watch the _________ ______ （国旗）go up every morning.
“Are you sure you can work out the problem yourself ” Peter asked me in d_______.
translate
oiling
Suddenly
national
oubt
一、根据汉语、首字母或英文提示填空
flag
4
课堂训练
1. To people’s great surprise, the old building still _________ after the strong
earthquake.
A. refused B. remained
C. required D. reviewed
2. — Mom, may I drink the milk on the table.
— No, you can’t. It smells _______. It has gone bad.
A. good B. well 　 C. terribly 　 D. terrible
B
D
二、单选
3. — Our classroom is so clean. Who cleaned it, Li Fei
— Sorry, I don’t know. I think ______ did it before class.
A. somebody B. nobody
C. everyone D. anyone
4. — When did the tea trade from China to Western countries _____
— In the 19th century.
A. take after B. take off
C. take place D. take away
A
C
1.The young man saved the lives of the children.
2. The villagers didn’t find the lost boy at last.
3. Did you clean up your room last night
4. My mother bought me a new CD player.
三、将下列句子改为被动语态。
The lives of the children were saved by the young man.
The lost boy wasn’t found by the villagers at last.
Was your room cleaned up last night
A new CD player was bought for me by my mother.
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