Lesson 21 Books or Computers? 教案
Learning aim:
1. Learn about the history of the books.
2. Know about the fountain of the printing press.
Learning important points:
1. Why is the printing press important?
2. How did books change information?
Learning tools:
audiotape, flashcards, pictures
Learning steps:
Step 1. Listen to the tape and answer the following questions:
How many books have you read this year?
Have you ever read an e-book? Do you like them？
Step 2. Reading
Read the text and check the answers. Then read it loudly in class.
Step 3. Practice
Practice some main language points in the text.
Step 4. Talking
Talk about the question: Which one is more important, the printing press or the Internet? Why?
Step 6. Listening
Listen to tape for several times and repeat after it. Make sure the students can read it fluently and correctly.
Step 7. Homework
1. Finish off the exercises in workbook.
2. Preview Lesson 22.
Unit 4 Lesson 21 Books of Computers 课时练习
I. 根据括号中所给汉语用适当的词语填空。
1. When did the world’s first computer ___________（出现）？
2. The ____________（现代的）technology changes our life.
3. How can we use these ____________（电子的）machines?
4. What about ____________（出售）these computer in low prices?
5. I think ____________（知识）is the most important thing in the world.
II. 根据句意用适当的介词填空。
1. People began to write their stories ___________ paper.
2. We can read books __________ many different ways.
3. It’s easy ___________ us to use this kind of computer.
4. All these stories are written ___________ hand.
5. Ancient people passed on what they know _______ telling stories.
III. 根据所给的汉语完成下面的句子，每空一词。
1. 你知道如何造纸吗？
Do you know ____________ ___________ _________ paper?
2. 写一本书要花费很长时间。
____________ ___________ a long time ____________ ____________ a book.
3. 电子书改变了人们的阅读习惯。
E-books change the people’s _____________ ___________.
4. 无论你说什么，我都相信你。
____________ __________ __________ you say, I’ll believe in you.
5. 我们有很多读书的方式。
We have many _____________ __________ _________ books.
IV. 按要求进行句式转换，每空一词。
1. The history of books is very interesting.（改为感叹句）
____________ ____________ the history of books is!
2. People can buy things online easily.（改为同义句）
___________ __________ _______ people to buy things online.
3. She wrote some words on the first page of the book.（改为一般疑问句）
___________ ___________ ___________ __________ words on the first page of the book?
4. It took her a whole day to finish that story.（对画线部分提问）
___________ __________ ___________ it take her to finish that story? 5. I have already read the books about paper. (改为一般疑问句)
_______ you _______ the books about paper ________?
参考答案：
I. 1. appear 2. Modern 3. electronic 4. selling 5. knowledge
II. 1. with 2. in 3. for 4. by 5. by
III. 1. how to make 2. It takes, to write 3. reading habits 4. ways to read
IV. 1. How interesting 2. It’s easy for 3. Did she write any 4. How long did 5. Have, read, yet
Lesson 21 Books of Computers
学 习 目 标
知识与能力：New words: press appear modern electronic sell
过程与方法： speaking reading and writing
情感态度和价：了解西方计算机 发展过程以及其现状。
重点： 掌握一些与书籍发展史有关重点词汇
难点： 运用所学知识介绍自己了解的书籍的情况。
预习案
Ⅰ. 根据句意及汉语意思写单词或短语。
1. Suddenly, a woman (出现) at the end of the street.
2. (现代的) technology has opened our eyes to many things.
3. The boy is reading a new (电子书) in his bedroom.
4. I (卖) my old car to Mr. Green for 800 dollars.
5. How much did they pay for the new (印刷机)?
疑难解惑
1. People passed on their knowledge by telling stories.
人们通过讲故事来传播知识。
pass on 传递；前进；去世
He passed on at the age of 72. 他72岁时去世。
Many a student fails to ______ the examination. 许多学生考试不及格。
2. They wrote each word by hand. 他们用手来写每个单词。
by hand 用手；手工
He moved the huge stone_____________.
他用手移动了那块大石头。
3. Then, the printing press appeared and changed the world.
然后，印刷机出现了并改变了世界。
printing press 印刷机
The newspaper is the most novel product of ______________.
报纸是印刷机制造的最新奇的产品。
press n. 压；按；新闻；出版社
He felt the ________of modern life. 他感觉到现代生活的压力。
v. 压；按
Drago ________ a button and the door closed.
德拉戈按了一个按钮，门关上了。
Press this button to start the engine.
要开动发动机就按这个按钮。
4.appear vi. 出现；呈现；来到
When night falls, stars _________.
夜晚来到时星星出现。
A woman appeared at the far end of the street.
一个女人在街那端出现了
5. No matter what you have……keep on reading.
不管你有什么，继续阅读。
No matter what=whatever 无论…..什么
keep on 继续 keep on doing sth
They run after me. I don't look back at them and _________running.
他们在后面追，我没有回头看，继续一个劲儿的跑。
The important thing is to keep on top of industry trends, and stay informed. 重要的事情是保持行业趋势的优势，并且消息灵通。
I. 按要求完成下列句子，每空一词。
1. They used to send cards at important festivals. (改为否定句)
They to send cards at important festivals.
2. The old man passed on knowledge by telling stories. (对画线部分提问)
the old man on knowledge?
3. Whatever happened, he would not change his plan. (改为同义句)
happened, he would not change his plan.
4. The Internet is very important in daily life. (改为感叹句)
the Internet is in daily life!
5. Henry’s reading habit is good. (用bad改为选择疑问句)
Henry’s reading habit good ?
Ⅱ. 用所给单词的适当形式填空。
1. Can Frank jump (far) than Tom?
2. Do you know how (send) an e-mail?
3. I have (read) the interesting book many times.
4. It’s important for a child (get) enough sleep.
5. All the students are interested in this new (invent). It is very useful.
备注（教师复备栏及学生笔记）
备注（教师复备栏及学生笔记）
课件13张PPT。Lesson 21:
Books or Computers?Learning aim:
1. Learn about the history of the books.
2. Know about the fountain of the printing press.
Learning important points:
1. Why is the printing press important?
2. How did books change information?New words Press appear
modern electronic
sell Think About ItHow many books have you read this year?
Have you ever read an e-book? Do you like them？Language
Points1. In ancient times, there were no books, and people passes on their knowledge by telling stories. 在古代，没有书，人们通过通过讲故事传递知识。
by是介词，后面可以加名词或动名词短语，意为“通过……方式（途径）”。如：
I learn English by listening to tapes. 我通过听磁带学英语。 2. It took a long time to write just one book. 仅仅写一本书就要花费很长一段时间。
句型It takes sb. some time to do sth.?意为“某人花费多长时间做某事”，it是形式主语，真正的主语是动词不定式“to do sth.”；take 随时态改变，本句用的是一般过去时态，所以用took。如：
It took me two hours to clean my house yesterday. 我昨天用了两个小时打扫房子。P2链接：(1) spend…on / in …意为“花费”，主语是表示人的名词或代词，spend后接表示金钱或时间的词，on后接名词，in后接V-ing形式，也可省略in。如：
I spent twenty yuan on the dictionary. 我花二十元钱买的这本字典。
They spend one hour doing their homework every day. 他们每天花费一小时做作业。P1P3(2) cost意为“花费”，主语是表示物的名词或代词，常用于“sth. cost sb. some money”。如：
The pen cost me ten dollars. 这支钢笔花了我十美元。
(3) pay…for…意为“为……付款”，人作主语，常用pay some money for sth，pay的过去式和过去分词为paid。如：
My mother paid 30 dollars for her sweater. 妈妈买这件毛衣花了三十美元。ExercisesI. 根据所给汉语提示，完成下列句子。
1. A computer is a useful _______ (机器).
2. There are two ________ (印刷) presses in our school.
3. What's the meaning of the second _________ (段落) in the text?
4. ________ (哪一条) way shall we go?
5. I bought a book about _______ (现代的) history yesterday.modernmachineprintingparagraphWhichII. 用所给单词的适当形式填空。
1. I think the Internet is ______________ (important) than the printing press.
2. The novel __________ (write) by Qiong Yao.
3. We can find information ______ (quick) on the Internet.
4. The machine can make __________ (thousand) of books a day.
5. If you ______ (forget) the telephone number, you could look it up in the book.forgot more importantwas writtenquicklythousandsIII. 连词成句。
1. hand, the, by, model, was, plane, made
__________________________________ .
2. get, how, you, information, did, the
__________________________________?
3. the, answer, English, questions, in, please
__________________________________ .
4. the, Internet, people, lets, quickly, information, search, for
_______________________________________ .
5. much, sound, travels, than, faster, light
__________________________________ .Light travels much faster than soundThe model plane was made by handHow did you get the informationPlease answer the questions in EnglishThe Internet lets people search for information quickly
