冀教版英语八年级下Unit 4 The Internet Connects Us Lesson 21 Books or Computers?课件+嵌入音频（25张PPT））

(共25张PPT)
Unit 4 The Internet Connects Us
Lesson 21 Books or Computers
1.Curriculum words: press, appear, modern, electronic , sell,
2. Useful expressions: pass on , by hand, printing press, keep on, write down, thousands of.
3. Sentences: ①Later, people learned how to write and make paper.
②It took a long time to write just one book!
③No matter what you have, a computer, a tablet, a laptop, an e reader or a real book, keep on reading！
　 Did you know that China was the first to invent paper？
Paper was invented during the Han Dynasty.
Paper is one of the four great inventions of ancient China.
The other three inventions are the compass , printing press and gunpowder.
paper books
How many books have you read this year
e-books
Have you ever read e-books
What do you think of them
The history of books is very interesting. In ancient times，there were no books，and people passed on their knowledge by telling stories. Later，people learned how to write and make paper. With paper，people began to write down their stories. They wrote each word by hand. It took a long time to write just one book！
Then，the printing press appeared and changed the world . With modern technology, it was possible to print books quickly. It was also possible for common people to read books .
Recently，computers and the Internet changed the world again. A new kind of book appeared： the electronic book(e- book)．E -books are quickly changing people’s reading habits . It is easier for people to buy and sell books online. Information travels faster and farther.
Nowadays，people have many ways to read books . No matter what you have，a computer，a tablet，a laptop，an e-reader or a real book，keep on reading！
Listen and read
1．How did people write books in ancient times
2．What made it possible to print books quickly
3．What kind of books quickly changed people’s reading habits
They wrote each word by hand.
Modern technology.
The electronic book (e-book)．
Read the lesson and answer the questions .
The History of the Book
□It took a long time to write just one book .
□It made it possible for common people to read books .
□The e-book appeared .
□People had no books，and they shared knowledge by telling stories .
□The printing press appeared .
□People download books from the Internet .
□With paper，people began to write down stories .
3
5
6
1
4
7
2
Read the lesson and put the sentences in the correct order .
Language points
◆pass on传递
·Can you pass on the newspaper to my sister
你能把报纸递给我的姐姐吗？
In ancient times, there were no books, and people passed on their knowledge by telling stories.
Language points
◆“疑问词+不定式”作宾语
疑问代词what，who，which以及疑问副词how，when， where等都可加动词不定式，作及物动词的宾语。
【拓展】当“疑问词+不定式”结构在句中作宾语时，可改为一个宾语从句，从而把简单句改为复合句。
Do you know whom to go with =Do you know whom you shall go with
你知道你必须和谁一块去吗？
Later, people learned how to write and make paper.
Language points
◆It takes sb. some time to do sth. 做某事花了某人多少时间。
【拓展】It takes/took sb. some time to do sth. 可转换成
“sb. + spend(s)/spent+时间+(in) doing sth. ／on sth. ”结构。
It took the workers about two years to finish the project.
=The workers spent about two years finishing the project.
工人们花了约两年的时间才完成这项工程。
It took a long time to write just one book!
Then, the printing press appeared and changed the world.
反义词disappear vi. 消失 appearance n.出现；露面
e.g. His sudden appearance surprised me .
他的突然出现使我感到惊讶。
e.g. A ship appeared on the horizon.
一艘船出现在地平线上。
Language points
appear v.出现；呈现；来到
Language points
◆no matter无论 no matter后面常与关系词搭配使用
no matter how = however(不管怎样)
no matter who = whoever(无论谁)
no matter where = wherever(在任何地方)
no matter when = whenever(无论何时)
No matter what you have, a computer, a tablet, a laptop, an e-reader or a real book, keep on reading!
e.g. No matter where you go, you may find friends.
无论你去哪里, 你都可以找到朋友。
I told him he could come back no matter when he wanted to.
我告诉他不管什么时候他想回来都可以。
Language points
Language points
◆keep on doing sth. 继续做某事
·He kept on working until midnight though he was tired.
虽然他很疲劳，但是他持续工作到午夜。
No matter what you have, a computer, a tablet, a laptop, an e-reader or a real book, keep on reading!
3) Fill in the blanks . The first letter is given .
Paper　
With paper，people began to write down their stories .
People wrote each word by hand . It took a long time
to write one book . _____________ couldn’t travel far .
Printing press　
When the printing press __________，it changed the
world . The ________ printing press can print books
quickly，and makes it possible for the _________
person to have easy access to books .
Information
appeared
modern
common
Let’s Do It!
Internet　
Computers and the Internet changed the world . They
made it possible for a new kind of book: the
___________book . Traditionally books could only
be bought and sold at a store，but today you can buy
and _______ books online .
electronic
sell
Let’s Do It!
4) Do you like reading paper books or electronic books(e- books)？Why？Talk with your partner and make up a dialogue .
e.g. A：Do you like e-books
B：Yes. I like them very much.
A：Why
B：Because it is very easy for people to buy and
sell books online.
Let’s Do It!
本节课我们主要学习了以下重点内容：
重点单词：appear
重点短语：keep on doing sth., no matter ,pass on
重点句式：“疑问词+动词不定式”
It takes/ took some time to do sth .
测评：八年级下册Unit 4-Lesson 21随堂检测（配套）2
I.根据句意及汉语提示补全单词
1. Before the printing ________（印刷机）, somebody wrote every book by hand with a pen.
2. They clapped and shouted excitedly when they saw Yao Ming ________ (出现)on the playground.
3. We should learn from each other in the _______（现代的）society.
4. I suppose the ________（电子的）dictionary will make us lazy and we shouldn't use it.
press
appear
modern
electronic
测评：八年级下册Unit 4-Lesson 21随堂检测（配套）2
5. She had to ________（卖）the house even though it was against her own wishes.
6. Why don't you learn a ________（传统的）Chinese dance
II.单项选择
( )1. — ________ apples do we need to make fruit salad —Let me think. We need three apples.
A. How long B. How often C. How much D. How many
sell
traditional
D
测评：八年级下册Unit 4-Lesson 21随堂检测（配套）2
( )2. It usually _________ Mum about half an hour to cook supper.
A. pays B. takes C. spends D. costs
( )3. Studying in groups is a popular way ________ can develop students' ability.
A. which B. what C. who D. whom
( )4.—What's your QQ number 一 _________ is 355994127.
A. I B. He C. It D. She
( )5. Don't open the door, _________ who comes.
A. no if B. no how C. if D. no matter
B
A
C
D
1.Which invention do you think is more important—the printing press or the Internet
(Write a short passage and give at least three reasons to support your choice.)
2. Preview Unit 4-Lesson 22.
Bye-bye