Unit 6 When was it invented Section B(3a-selfcheck)(第5课时）课件27张PPT

Unit 6 When was it invented？
Section B(3a-selfcheck)
第5课时
2020年秋人教新目标英语九年级上册精品课件
学 习 目 标
复习一般过去时的被动语态
1
通过写一篇短文来描述一项发明
2
Review the expressions and sentences.
2. 阻止某人做某事
1. 把……分开
3. 钦佩；仰慕
divide …into…
stop sb. from doing sth.
look up to
4. 鼓励某人做某事
5. 实现某人的梦想
encourage sb. to do sth.
achieve one’s dream
Review
Writing
invention
课 堂 学 习
Have you ever come across any difficulties in your daily life?
I am not able to take notes quickly in class.
It’s very hard for me to get up early.
I’m worried about my everyday homework.
Can we invent something new to solve those difficulties?
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:
taking notes for me
It can take notes automatically.
3a
Problem:
getting up early
New invention:
a special clock
What it is used for:
waking me up
It can call me up with the voice of my teacher.
Problem:
doing homework
New invention:
a robot
What it is used for:
doing homework with me
It can be my favorite homework partner.
Now it’s your turn!
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…
3b
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.
Sample writing:
将有6位同学扮演“推销商”上台向同学们“推销”自己的发明，台下的每位同学都有一票选择权，得票最多的“推销商”获胜。
（注：在“推销”发明时需全程使用英语）
Play a game
谁的发明最畅销？！
我们在推销一件产品的时候，通常会从哪几个方面去描述呢？
Invention
What is the invention?
What is it used for?
Who invented it?
When was it invented?
Summary
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.
invent, doubt, mention, website, all of sudden
Self Check
I. Complete the passage with the correct forms of the words in the box.
invent
Some inventions can also lead to other inventions _____________. 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.
all of a sudden
doubt
websites
mention
invent, doubt, mention, website, all of sudden
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).
When was the personal computer invented?
Five eggs were used to make this big cake by them.
II. Rewrite these sentences using the passive voice.
4. They asked us not to run in the hallway.
________________________________
________________________________
5. Someone took the video back to the store.
________________________________
________________________________
The video was taken back to the store
(by someone).
We were asked not to run in the
hallway (by them).
Invention: _________________________
When: _________________________
Who: _________________________
Purpose: _________________________
III. Find out information about an invention you would like to know more about and write sentences below.
阅读短文，从方框中选择恰当的词并用其适当形式填空，使短文完整、通顺。
translate, Canada, pleasure, sudden, mention, somebody
Dear Marcus,
How are you in the UK? In your last e-mail you (1) __________ Pam. You want to know something about this girl, yes? Of course I know a lot about her.
mentioned
课 堂 达 标
Pam is a (2) ________ girl. She’s smart. Her hobby is writing. Four years ago, she wrote a book. In 2015, it came out. It was popular with many people. And it was (3) _________ into many different languages. Pam has become a successful and young writer. Pam’s hobby has brought her (4) ________ and success. Many people love Pam and I’m among of them. I’m proud to know her.
Canadian
translated
pleasure
translate, Canada, pleasure, sudden, mention, somebody
To be exact, I also want to be (5) _________ like her. Oh, Marcus, something always happened all of a (6) ________. My light went off. I must stop to have a look.
Best wishes!
Yours,
Steve
somebody
sudden
translate, Canada, pleasure, sudden, mention, somebody
Homework
Mary在某英语学习网站就“The Most Useful Invention?”这一话题发帖，征集网友的看法。假如你叫李华，你认为最有用的发明是因特网，请你根据Mary的帖子给她回帖。
The Most Useful Invention?
Mary—Monday, March 11, 2019
I am writing a paper about inventions for my English class, and I need some ideas. What do you think is the most useful invention? Thanks for your ideas.
要求：
1.?简要阐述因特网的用途(至少三个)；
2.?词数90左右；回帖的部分内容已给出，
不计入总词数。
RE: The Most Useful Invention?
Li Hua—Saturday, March 30, 2019
I think the most useful invention is the Internet.?????????????????????????????????? ??
????????????????? ??????????????????????????????????????????????
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Thank you !
谢谢
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