Unit 6 When was it invented Section B 3a-Self Check课件（共27张ppt,含内嵌视频)人教版英语九年级全一册

Unit 6
When was it invented?
Section B (3a~Self Check)
新课导入
Do you like this invention?
2
1
能巩固复习本单元的单词和短语
能巩固复习一般现在时的被动语态
3
能写一篇新发明的说明
预习检测
1. A father in the UK has _______ a wonderful idea to send his kids to school on time. He takes his sons to their school in a white tank (坦克).?
A.looked up to　　 B.made up
C.come up with D.shown up
2.He asked me _______ football in the street.?
A.not play B.not to play C.don’t play D.not playing
3. This kind of metal is used _______ planes.?
A.as make B.for making C.by making D.for made
C
B
B
4. He is an honest boy. I have no reason to _______ what he said.?
A.hear B.doubt
C.repeat D.believe
5. About 5,000 cars _______ in the factory last month.?
A.were produced B.have produced
C.was produced D.will be produced
B
A
知识梳理
New phrases
1.做笔记 ____________________
2.被某人发明 ____________________
3.想出 ____________________
4.引导;导致 ____________________
5.其他人的想法 ____________________
6.在走廊里 ____________________
take notes
be invented by someone
come up with
someone else's idea
lead to
in the hallway
重点探究
能写一篇新发明的说明
Think of something that you do not like to do. Then think of an invention that could help you. Make notes.
Problem：_______________________________
New invention：__________________________
What it is used for：_______________________
quickly taking notes in class
a special pen
correcting mistakes
3b. Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.
This special pen was invented by Liu Jie. It has three colors and is used for...
Writing Tips
在介绍发明的信息时经常要用被动语态。在介绍发明的历史(即发明者、发明时间和发明地点)的时候通常用_________时态的被动语态。在介绍发明的用途时，通常使用“_______________________”句式。
一般过去
be used for doing sth.
Writing Time
One possible version
______________________________________
______________________________________
______________________________________
______________________________________
This special pen was invented by Liu Jie. It has three colors and is used for taking notes and correcting mistakes. It is very cheap. It is easy to take. It is made of plastic so it's not heavy. Do you want to buy it?
Check
篇章方面:内容完整；要点齐全；布局合理
句子方面:句子完整；主谓一致；动词时态；连词使用
用词方面:代词主格，宾格；名词单复数；动词搭配；副词位置
细节方面: 单词拼写；标点符号；大小写
Pair work
和同桌交换习作互相欣赏，用红笔划出对方的亮点，并对不足的地方进行适当修改。
活动小结
通过以上的活动，我们知道，在介绍发明的信息时经常要用被动语态。在介绍发明的历史(即发明者、发明时间和发明地点)的时候通常用_________时态的被动语态。在介绍发明的用途时，通常使用“_______________________”句式。
一般过去
be used for doing sth.
巩固复习一般现在时的被动语态
Revision
1.invent /?n?vent/ v. 发明; 创造
He invented the car.
他发明了汽车。
2.doubt /da?t/ n. 疑惑; 疑问 v. 怀疑
No one doubted his ability.
没人怀疑他的能力。
3.mention /?men?n/ v. 提到; 说到
I didn't mention the fishing trip.
我没有谈及钓鱼之行。
4.website /?websa?t/ n. 网站
we should build a website where people can look at the pictures and paintings.
我们可以建立一个人们可以在那里看图画和绘画的网站。
5.all of a sudden 突然；猛地
Why's he sick all of a sudden?
为什么他会突然病了？
1 Complete the passage with the correct forms of the words in the box.
invent　doubt　mention　website all of a sudden
It is often difficult to decide on the inventor of certain inventions. This is because sometimes a few people may ________ things which are nearly the same. It's hard to tell who came up with the idea first. Some inventions can also lead to other inventions ____________.
invent
all of a sudden
invent　doubt　mention　website all of a sudden
So some people ________ whether the inventor came up with the idea himself or herself. They think that the inventor used someone else's idea to create his or her invention. That is why books or ________ usually ________ more than one inventor when giving information about inventions.
doubt
websites
mention
系动词之后是表语，表语是由一个句子充当的，即称为表语从句，连接表语从句的词有：because, why, that, what, who, when, where，which, whether, how等。
This is because... 这是因为……
Language Points
eg：All the cars are going slowly. This is because there is a thick fog.
所有的车都开得很慢，这是因为有浓雾。
His bike was broken. That is why he came to school on foot.
他的自行车坏了。那就是他步行来学校的原因。
2 Rewrite these sentences using the passive voice.
1．Someone stole my watch.
__________________________________________________
2．They used five eggs to make this big cake.
__________________________________________________
3．When did they invent the personal computer?
___________________________________________________
My watch was stolen by someone.
Five eggs were used to make this big cake by them.
When was the personal computer invented by them?
4．They asked us not to run in the hallway.
_______________________________________________
5．Someone took the video back to the store.
_______________________________________________
We were asked not to run in the hallway by them.
The video was taken back to the store by someone.
Revisoin
一般过去时的被动语态的基本用法
用法
示例
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
The house was built in 1990.
这所房子建于1990年。
讲述发生在过去的动作，且不知道动作的执行者
He was honored with the name “ Father of Hybrid Rice”.
他被授予“杂交水稻之父”的
称号。
1. 肯定句: 主语 + was/were + V-ed + (by…)
The news was published by the government.
2. 否定句: 主语 + was/were + not + V-ed + (by…)
3. 一般疑问句: Was/Were + 主语 + V-ed + (by…)?
The news wasn't published by the government.
Was the news published by the government?
4. 特殊疑问句: 疑问词 + was/were + 主语 + V-ed + (by…)?
When was the news published by the government?
一般过去时的被动语态的句式结构
3 Find out information about an invention you would like
to know more about and write sentences below.
Invention: ______________________________________
When: _________________________________________
Who: __________________________________________
Purpose: ________________________________________
Bell
Telephone
1876
To communicate with others
活动小结
通过以上的活动，我们巩固复习了一般过去时的被动语态：
肯定句：____________________________________________
否定句：____________________________________________
一般疑问句：________________________________________
特殊疑问句：________________________________________
主语 + was/were + V-ed + (by…)
主语 + was/were + not + V-ed + (by…)
Was/Were + 主语 + V-ed + (by…)?
疑问词 + was/were + 主语 + V-ed + (by…)?
当堂检测
按要求完成下列各题。
1.Do you sweep the floor every day?(改为被动语态)
_________ the floor _________ every day? ?
2.We play football in our school every day.(对画线部分提问)?
_________ _________ football _________ by us every day??
3.Both my mother and my father like watching TV.(改为同义句)
_________ _________ my mother but also my father _________ watching TV.?
4.Lu Ming was made to learn English 10 hours a day by them.(改为主动语态)
They _________ Lu Ming _________ English 10 hours a day.?
Is swept
Where is played
Not only likes
made learn
课堂总结
Unit 6
Section B (3a~Self Check)
在介绍发明的信息时经常要用被动语态。在介绍发明的历史(即发明者、发明时间和发明地点)的时候通常用_________时态的被动语态。在介绍发明的用途时，通常使用“__________________”句式。
一般过去
be used for doing sth.
复习一般过去时的被动语态 ：
肯定句：____________________________________________
否定句：____________________________________________
一般疑问句：________________________________________
特殊疑问句：________________________________________
主语 + was/were + V-ed + (by…)
主语 + was/were + not + V-ed + (by…)
Was/Were + 主语 + V-ed + (by…)?
疑问词 + was/were + 主语 + V-ed + (by…)?