Unit 6 When was it invented? Section B （3a-self check)课件(共28张PPT)

(共28张PPT)
英语（人教版）
九年级全册
English
Unit 6
When was it invented？
Section B 3a-self check
请在上节课你想做的发明作业纸上写上你的名字，并放入讲台上的纸盒里。 现在一名学生从中任意抽取一张，用 It was invented by…, It looks like… 句型说出这是谁的发明和该发明的外观像什么。 其他同学用一般疑问句提问，猜测这项发明的价值，材料，作用等。让学生评选出最有趣的发明，最实用的发明等奖项。
总结一下最实用的发明可以解决我们生活里的什么问题呢。
Activity! I love inventing!
1
课堂导入
Ha, I want to invent a special broom.
What do you want to invent
What is it made of
It’s made of stainless steel.
Let some students show what they want to invent.
Show time
It is used for flying to the sky.
What is it used for
When can it be used
If you have something urgent, the traffic is very busy, then we can use it.
This kind of broom is much cheaper than the helicopter. Everyone can afford it.
How much will it cost
3a
Think of something that you do not like to do. Then think of an invention that could help you. Make notes.
Problem: quickly taking notes in class
New invention: a special pen
What it is used for:
2
课堂活动
What is your problem
Emm, I have to take notes quickly in class, but I can follow the teachers most of the time.
Exchange your chart with your partner and discuss it.
So what do you want to invent
…
3b
Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.
Try to tell us the following information:
What is it made of
What is it used for
What does it look like
Where or when can it be used
How much will it cost
3b
This special pen was invented by Liu Jie. It has three colors and is used for_____ _________________________________________________________________
_________________________________________________________________
_________________________________________________________________.
Write it like this:
Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.
Sample writing:
This special pen was invented by Liu Jie. It has three colors and is used for taking notes quickly. It is very useful if you have a lot to write down. The pen comes with a microchip that can store a list of common words that you will use. You can program the words you will use often into the microchip’s memory, then assign a short form to each word. when you are writing, you
just need to write the short forms with the pen, press a button on the pen and all the short forms will change into the actual words. The microchip can contain up to 50 words and you can make changes to the list of words whenever you need to.
计算机在我们的生活、工作中的作用越来越大，你知道计算机的起源与发展吗？请结合计算机的发明时间(1946年）、外形、用途等方面，谈一下它的发展变化，并说明你对未来计算机的畅想。
要求：1.意思连贯，语句通顺；词数不少于80。
练一练
这是一篇事物介绍类的说明文，根据题目提示可考虑采用下面的模板。
计算机
引出话题
介绍发明
畅想未来
... important in our daily life.
时间:The computer was invented
in ...
外形：... was huge.
用途:send some messages ... open ...
I think computers are going to ...
Computer
Computers are becoming more and more important in our daily life. Do you know when the computer was invented The computer was invented in 1946. At that time, it was huge. With the development of science and technology, the computer has grown smaller. Now there are many kinds of computers, such as personal computers and laptops. The computer is a very useful tool in our life.
【参考范文】
For example , it can send some messages to foreign friends by e-mail. What’s more, it can share information with others through the World Wide Web. We can also listen to music or play the game on computers. It makes us relax.
It’s hard to imagine what our life would be like without computers. I think computers will be more convenient and they are going to change our life completely in the near future.
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________________. So some people __________ whether the inventor came up with the idea himself or herself.
doubt
invent
all of a sudden
1. Complete the passage with the correct forms of the words in the box.
Self check
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.
websites
mention
invent doubt mention website all of a sudden
1. Someone stole my watch.
2. They used five eggs to make this big cake.
3. When did they invent the personal computer
2. Rewrite these sentences using the passive voice.
My watch was stolen (by someone).
Five eggs were used (by them) to make this big cake.
When was the personal computer invented
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.
The video was taken back to the store (by someone).
3. Find out information about one invention and
write sentences below.
Invention: ________________________________________________
When: ___________________________________________________
Who: ____________________________________________________
Purpose: _________________________________________________
Answers will vary.
3
课堂小结
1.Master the following words and sentences of Unit 6.
2.Learn to write a description about the invention by using the passive voice.
3.Review the passive voice （past tense ）.
一、单选
1. — What are you watching
— The Story of China. This part ______ at China Block Printing Museum of
Yangzhou in 2014.
A. filmed B. was filmed C. has filmed D. is filmed
2. — Simon, do you know who invented the kite
— Sure. It _____ by Mozi over 2,000 years ago.
A. is invented B. invented
C. was invented D. will be invented
B
C
4
课堂训练
3. In old days, the poor ______ for the boss for over 18 hours a day.
A. was made to be worked B. were made work
C. were made to work D. was made work
4. Many shops in China ______ to shut down as a new law against ivory trade came
into effect on January 1st, 2018.
A. ordered B. didn’t order
C. were ordered D. weren’t ordered
C
C
二、 Fill in the blanks with the correct form of the given verbs.
The first paper __________ (make) in China in 105 AD.
In 610, papermaking ______________ (introduce) into Japan.
was made
was introduced
3. Kites ___________ (know) in China about 3,000 years ago.
were known
4. Wheelbarrows (独轮手推车) _____________ (invent) in the Han Dynasty.
5. Gunpowder(火药) ______________ (discover) by the Chinese hundreds of
years ago.
6. Soccer _____________ (develop) in England in the 12th century.
were invented
was discovered
was developed
三、 按要求改写下列各句。
1. We planted these trees in 1997. (改成被动语态)
________________________________________
2. He made a cake yesterday. (改成被动语态)
________________________________________
3. The teacher gave the students some advice. (改成被动语态)
______________________________________________
These trees were planted (by us) in 1997.
A cake was made by him yesterday.
Some advice was given to the students by the teacher.
4. He was seen to read a book in his room. (用I作主语, 改为主动语态)
___________________________________________
5. She was helped by all the people.(改成一般疑问句)
____________________________________________
I saw him read a book in his room.
Was she helped by all the people
1. Review the words in this unit.
2. Write a passage （2017年广州中考）
假如你发明的“飞行单车”在学校科技节中获奖，被推荐参加一个国际青少年科技展览。请用英语介绍你的发明， 内容包括下图1-4项。
注意：
（1）参考词汇：轮子：wheel 太阳能：solar power
（2）词数80左右（文章的开头已给出，不计入词数）。
（3）不得透露学校、姓名等任何个人信息。
My invention is a flying bike. ____________________________________________
____________________________________________________________________________________________________________________________________________________________________________________________________________
【解答】My invention is a flying bike．It is fast，convenient and green!
The flying bike has two wheels and two wings．（外观）It has a top speed of 300km/h，You can go to farther places in a shorter time．
It can run on land and fly in the air．If you shout "fly“ the bike will turn into a plane in 30 seconds．Then you can fly in the air．You will be as free as a bird．It can take photos，too．（用途）
Instead of petrol，the bike uses solar power，so it will not pollute the air．【高分句型一】（特点）I will add a seat behind it so that it can carry two persons【高分句型二】．（改进计划．）My invention will help people live a better life in the future．
【点评】考生首先要认真阅读前面的提示认真审题，确定文章的中心．注意文章文体、人称和时态．要求介绍．同时应选用合适的连接词或过渡词，使文章具有一定的连贯性．温馨提醒：考生必须认真查验是否有漏写情况，有无拼写错误及标点误用等．
　
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