(共48张PPT)
Unit4 The Internet Connects Us
Lesson 21
Books or Computers
Revision
Can you name the parts of a computer
monitor
screen
mouse
keyboard
host
Lead-in
Q1: In ancient times,there were no books.
How did people get knowledge
They got knowledge by telling stories.
Q2: How do people get knowledge now？
By learning from teachers or learning by themselves
on the computer.
By reading paper books / e-books .
paper books
E-book is short for the electronic book.
Words and expressions
Cailun invented papermaking in East Han Dynasty. China was the first country to invent paper.
It changed the world.
It takes/took sb. time to do sth.
花费某人多少时间
In ancient times, people
wrote each word_______.
It usually ________ them
a long time to write just one book.
by hand
took
by hand 手工
printing press 印刷机
This is a _______ ______ with _____ technology ,
it can make thousands of books a day.
printing press
modern
With the computer and the Internet， a new kind of book _________: the ________ book(e-book).
It is easier for people to buy and _____ books online.
﹢
appeared
electronic
sell
1.press 印刷机；新闻界
2.appear 出现；呈现；来到
3.modern 现代的；新式的
4.electronic 电子的
5.sell 卖；出售
Words
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.
The printing press.
E-books.
Listening
Reading
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 .
□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
Reading again
Fill in the blanks . The first letter is given .
With paper，people began to write down their stories.
People wrote each word ________ .
It took a long time to write one book .
_________ couldn’t travel far.
paper
by hand
Information
When the printing press _________, it changed the world. The ________ printing press can print books ________, and makes it possible for the _______ person to have easy access to read books.
appeared
modern
quickly
common
printing press
__________ and the Internet changed the world. They made it possible for a new kind of book: the _______ books. Traditionally books could only be bought and _____ at a store, but today you can buy and _______ books online.
Computers
electronic
sold
sell
sell- sold -sold
Internet
paper books VS electronic books
too heavy to carry
easily become old
expensive
protect our eyes……
esay to carry
convenient
easy to read at any time
protect forest
the abundant resource
save money
save space
are bad for eyes……
Talking
Do you like reading paper books or electronic books (e- books)？Why？
eg：A：Do you like ——————
B：Yes.I like them very much.
A：Why
B：Because————————.
Talk with your partner and make up a dialogue .
Talking
Which invention do you think is more important —the printing press or the Internet
Talking
Culture tips
What are the four great inventions of ancient China？
printing press
paper making
gunpowder
compass
Culture tips
课文呈现
The history of books is very interesting. In ancient times，there were no books，and people passed on their knowledge by telling stories. ① Later，people learned how to write and make paper. ② With paper，people began to write down their stories. They wrote each word by hand. ③ It took a long time to write just one book！ ④
课文呈现
Then, the printing press appeared and changed the world . ⑤ With modern technology, it was possible to print books quickly. ⑥ It was also possible for common people to read books .
This is a modern printing
press . It can make
thousands of books a day .
课文呈现
Recently，computers and the Internet changed the world again. A new kind of book appeared： the electronic book(e- book)．⑦ E-books are quickly changing people’s reading habits . It is easier for people to buy and sell books online. ⑧ 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！ ⑨
考点精讲
①In ancient times, there were no books, and people passed on their knowledge by telling stories.
no adj. 没有，无
考点1
e.g. There is no water in the glass.
=There isn’t any water in the glass.
玻璃杯里没有水。
I have no plan for the weekend.
=I don’t have a plan for the weekend.
我周末没有计划。
no+不可数名词
no+可数名词单数
考点精讲
【特别提醒】当“no+ 名词”作主语时，谓语动词的单复数要与no 后面的名词保持一致。
e.g. No news is good news. 没消息就是好消息。
No words are able to express my feelings.
我的感情是无法用言语表达的。
中考在线1：公共场所禁止吸烟。 [武威]
__________ __________ in public areas.
No smoking
考点精讲
pass on 传递；前进
e.g. Can you pass on the newspaper to my sister
你能把报纸递给我的姐姐吗？
考点2
含pass 的短语
pass on 传递 pass the exam 考试及格
pass away 去世 pass by 通过，经过
pass on...to... 把……传递/ 转告给……
pass on sth. to sb.(= pass sth. on to sb.)
考点精讲
拓展：pass 意为“传递”, 后可接双宾语。
e.g. Pass me the salt, please.= Pass the salt to me, please.
请把盐递给我。
小贴士：如果pass后的直接宾语为代词,只能用pass sth. to sb. 结构。
pass sb. sth.( ＝ pass sth. to sb.) 把某物传递给某人
考点精讲
① pass 动词：通过；走过；传递 I pass the supermarket on the way to work every day.
每天上班的路上, 我都路过那家超市。
We all passed the exam.
我们都通过了考试。
② past 介词：在另一边；到另一侧 He hurried past them without stopping.
他匆匆走过他们身边, 连停都没停。
辨析：pass 与past
考点精讲
②Later, people learned how to write and make paper.
how to write 怎样书写
在此结构中，疑问词可用疑问代词 who、which、what 等和疑问副词when、where、how 等。
e.g. I want to know how to improve my spoken English.
我想知道怎样提高我的英语口语。
考点3
特殊疑问词+动词不定式
考点精讲
中考在线2：The teachers are still talking about where they will hold the concert. （改为简单句）
The teachers are still talking about ______ ______ hold the concert.
【解析】上下文主语一致时，“特殊疑问词+to do”结构可以代替宾语从句。
where to
考点精讲
③ They wrote each word by hand.
by hand 用手工
by hand 意为“用手；靠手做；手工”，表示方式，注意词组中名词前不用冠词。
e.g. According to the symbol on the label, this sweater should be washed by hand.
根据标签上的符号，这件毛衣应该手洗。
考点4
考点精讲
拓展：by hand 还表示“亲手；亲自”。in hand 意为“在手头；在进行中；在控制中”。
e.g. He brought up the child by hand.
那孩子是他亲手带大的。
He has got the horse well in hand.
他把马控制得很好。
考点精讲
④ It took a long time to write just one book!
[高频] take /te k/ v. 费时；需要……时间
e.g. It takes me half an hour to go to school every day.
我每天花半个小时去学校。
考点5
① cost 物＋ cost(适当形式)＋人＋金钱 The ticket costs me ten dollars.
这张票花了我十美元。
辨析：cost, spend, take与pay
考点精讲
② spend 人＋spend(适当形式)＋时间/金钱＋ on ＋名词/ 代词 I spent all my pocket money on books. 我所有的零花钱都花在书上了。
③ take It ＋ takes/took ＋人＋时间＋to do It took me an hour to walk there. 我花了一小时走到那里。
④ pay 人＋ pay( 适当形式) ＋金钱＋ for ＋物 He paid 5 dollars for that book. 他花了5 美元买那本书。
考点精讲
中考在线3：It _______ Zhang Guimei many years to help about 1, 800 girl students in poor areas realize their college dreams. [龙东]
A. took B. spent C. cost
【解析】采用固定结构法。句意为“张桂梅多年来在贫困地区帮助了大约1800 名女生实现了她们的大学梦”。句式结构为“It takes sb. some time to do sth.”。
A
考点精讲
⑤ Then, the printing press appeared and changed the world.
appear / 'p / v. 出现；呈现；来到
e.g. The sun appeared on the horizon.
太阳露出了地平线。
His sudden appearance surprised me.
他的突然出现使我感到惊讶。
考点6
appearance n . 出现；公开露面
反义词disappear vi. 消失
考点精讲
中考在线4：—Recently, school violence ______ in some schools.
—Luckily, our government has carried out some policies to stop it. [恩施]
A. has appeared B. appeared C. will appear
【解析】考查句子时态。“目前，一些学校出现了校园暴力行为。”后文说“幸好政府已经实施一些政策来阻止这种情况”。符合现在完成时态的用法，强调过去发生的动作对现在产生的影响或结果。且recently 是一个完成时态的信号词。
A
考点精讲
⑥ With modern technology, it was possible to print books quickly.
modern /'m dn/ adj. 现代的；新式的
e.g. Do you like modern music or classical music
你喜欢现代音乐还是古典音乐
考点7
考点精讲
⑦ A new kind of book appeared: the electronic book(e-book).
electronic / lek tr n k/ adj. 电子的
e.g. I have an electronic dictionary.
我有一部电子词典。
考点8
electric 名词形式为electricity(电，电力)。
考点精讲
⑧ It is easier for people to buy and sell books online.
sell /sel/ v. 卖；出售(sold/sold)
e.g. I want to sell the car. 我想卖掉这辆小汽车。
He sold the old car to me for 500 yuan.=
He sold me the old car for 500 yuan.
他以五百元的价钱把那辆旧的小汽车卖给了我。
考点9
sell sb. sth.=sell sth. to sb. 把某物卖给某人
考点精讲
Mo Yan’s works sell well. 莫言的作品很畅销。
Tickets for the concert are sold out.音乐会的票卖完了。
sell 的常用短语：
sell well 卖得好；畅销(不用于被动句)
sell out/be sold out 售完
考点精讲
中考在线5：This kind of T-shirt looks ______ and sells ______ in the market. [安顺]
A. nice; good B. well; well
C. nice; well D. good; nice
【解析】用语法判定法。look 感官动词, 后接形容词。sell well 畅销。
C
考点精讲
⑨No matter what you have, a computer, a tablet, a laptop, an e-reader or a real book, keep on reading!
no matter what 无论什么
e.g. Don’t trust him, no matter what he says.
无论他说什么, 都别相信他。
考点10
no matter how = however(不管怎样)
no matter who = whoever(无论谁)
相当于whatever, 引导让步状语从句。
考点精讲
No matter where you go, you can 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。
no matter where = wherever(在任何地方)
no matter when = whenever(无论何时)
中考在线6：无论你做什么，你都必须遵守规则。 [ 营口]
______________________________________________
Whatever you do, you must follow/ obey the rules.
考点精讲
[高频] keep on doing sth. 继续做某事； 坚持做某事
e.g. He kept on ringing me up, but I didn’t want to keep in touch with him anymore.
他不断地给我打电话, 但我不想再和他保持联系了。
He kept talking until the meeting was over.
他一直在说话, 直到会议结束。
考点11
keep on doing sth. 表示动作的反复, 强调动作与动作之间有间隔。
keep doing sth.表示“一直做某事”, 强调动作的连续性。
考点精讲
中考在线7：Mr. Black, you are becoming healthier and healthier. Please keep on _______. [内江]
A. ran B. to run C. runs D. running
【解析】句意为“布莱克先生，你正变得越来越健康。请坚持跑步”。根据keep on doing sth. 得出答案。
D
1. To recite key words and useful phrases of Lesson 21
2. To write a short passage and talk about the advantages and disadvantages of e-books.
作业1
作业2
课后作业
goodbye
