课件26张PPT。Lesson 21 Books or Computers?
Do you know the Four Great Inventions of Ancient China?
.
compassprinting press gunpowderpaperthe Four Great Inventions of Ancient ChinaChina was the first to invent paper during the Han Dynasty. Paper is one of the Four Great Inventions of Ancient China.
Compass,gunpowder,printing press and paper are the Four Great Inventions of Ancient China. Compass can make a boat go in its correct direction. Gunpowder can be uesd not only in gun(枪) but aslo in firework(烟火). Because of Bi Sheng's way of printing, we can have more and more books to read. With the help of Cai Lun , we can use paper to write what we think and what we see in the wonderful world.They changed the world.
Let's feel proud of Chinese!
High-speed trainAlipayShared bicycleOnline shoppingfour new inventions of modern China New wordspress [pres] n .印刷机；新闻界
appear[?’p??] v.出现；呈现；来到
modern [’m?dn] adj.现代的；新式的
electronic[ ilek'tr?nik ] adj.电子的
sell [sel] v.卖；出售v. 压；按appearance n.出现；露面反义词disappear反义词 ancientelectronic book e-book
electronic mail e-mailelectric adj. 带电的,可通电的
electricity n. 电力 电流sell--sold--sold n. sale 销售；出售for sale 出售；代售
on sale 廉价出售enter—entrance n.入口 This is a _____________. With modern technology,
it was possible to ______ books quickly.(print)printing press 印刷机，印刷术 print——printing
v. 印刷 n. 印刷
press n.印刷机，新闻界
[pres] The power of the press is great.
v.按，压
Can you press that button(按钮) for me？
printing pressprint =printing machine
flying machine 飞翔器
washing machine 洗衣机 modern
[’m?dn]
现代的，新式的 Beijing is a _______city .Here,people
often feel the press of ______ life.压力 modernmodern
electronic book
(e-book)
In modern time,a new kind of book appeared:the
electronic book(e-book).
E-books are quickly changing people’s reading habits. There are many fresh vegetables and fruit for sale.
The woman is selling fruit. The fruit is on sale .We want to buy some. New wordspress [pres] n .印刷机；新闻界
appear[?’p??] v.出现；呈现；来到
modern [’m?dn] adj.现代的；新式的
electronic[ ilek'tr?nik ] adj.电子的
sell [sel] v.卖；出售electronic book=e-book
electronic mail= e-mailsell--sold--sold 反义词 ancient反义词disappearprinting pressThe history of books is very interesting. ①In ancient times，
there were no books，and people ②passed on their
knowledge by telling stories. Later，people learned③how
to write and make paper.With paper，people began to
write down their stories. ④ They wrote each word by hand.
⑤It took a long time to write just one book！
Lesson21 Books or Computers?在古代，古时候传递怎样写字和造纸 用手；手工It takes/took sb.some time to do sth .
做某事花费某人一些时间。There were no books,were there?
No,there weren’t.是的，没有。改反义疑问句by +n./代词/ving.用/通过……手段Read the lesson and answer the questions .
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?Let's Do It !They wrote each word by hand.The printing pressThe electronic books (e -books)．pass on 传递；前进；去世
What sort of values do you want to______?
你想把怎样的价值观传递给下一代？
He _________ at the age of 72.
他72岁时去世。
Many students failed to _______ the exam.
许多学生考试不及格。.
pass??pass on passed away “疑问词＋动词不定式”在句中作宾语
（what,who, which,when,where）
1.I don’t know how__________(sing) this song.
2.The problem is when_________(start).
3.I haven’t decided where_________(go).
(南通中考)Mr . Jiang advised us which __________(choose)as our after-school activities . to singto startto goto choose1.It will ________ only about 50 minutes to travel to Mount Wuyi by high-speed railway .
—Wow, how exciting! I can’t wait . (福州改编)
A．take B．spend
C．cost D．payA ⑥ Then，the printing press appeared and changed the
world . With modern technology, it was possible to print books
quickly. It was also possible for ⑦ 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)．
⑧E-books are quickly changing people’s reading habits .
⑨It is easier for people to buy and sell books online..
在网上买卖书appear 不及物 A ship appeared on the sea. Why does the person not appear? It is+ adj./比较级+（for sb.） to do sth. 做某事对某人来说是……的※形容词描述性格、品质的，如kind/ good/ nice/ right/ wrong/ clever/ careless/ polite/ foolish等，用of sb。
It’s so careless _____you to lose 1000 yuan.of ※⑩ Information travels faster and farther.
Nowadays，people have many ways to read books .
⑾ No matter what you have，a computer，a tablet，a laptop，an
e-reader or a real book，⑿ keep on reading！This is a modern printing press . It can make thousands of books a day . Which invention do you think is more important the printing press or the Internet?无论什么继续做某事传播地更快更远far-farther-farthest引导状语从句时no matter+疑问词=疑问词-ever
no matter when = whenever “无论何时”
no matter who = whoever “无论谁”
no matter how = however “无论怎样”
no matter where = wherever “无论哪里”1.无论你做什么, 我都同意。
you do, I always agree with you.
2.无论我去哪里, 我都会想着你。
I go, I will think of you.
3.不管在他们眼里你是谁, 你是我最好的朋友。
you are in their eyes, you are my best friend.
No matter what / WhateverNo matter where / WhereverNo matter who / Whoever【中考链接】
_______the weather is like, she walks to the park after supper.
A. No matter how B. No matter why
C. No matter where D. No matter whatKeep 其他用法：
1.keep sth 保存某物
2.keep +形容词 保持…状态.
3.keep+sb/sth+形容词 使…保持…状态
4.keep sb/sth away from sth 使……远离…
How long can I keep the book?
Doing sports can help you keep healthy.
We should keep the food cool.
Keep the baby away from hot water.
We should keep ________ English every day .
A．on practicing speak B． practicing speaking
C．practicing to speak D．on practicing speakingDWe know that three things have important influence on the development of books .What are they? First ,it is the invention of _______.Second, _______________appeared.Third, ____________________ were invented.
paperthe printing pressthe computer and the Internet 2) Read the lesson and put the sentences in the
correct order .
The History of the Book
□It took a long time to write just one book .
□ ⑿ 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 . 3Let's Do It !561472形式宾语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 . Let's Do It !InformationappearedmoderncommonInternet
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 . electronicselladv.传统上，照惯例4) Do you like reading paper books or electronic
books(e-books)？Why？Talk with your partner
and make up a dialogue .Let's Do It !eg：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.
