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九上册M4U2课件


Module 4 Great inventions Unit 2 Books could be produced more quickly and cheaply.

Check the new words.

produce v. invention n. look through create v. cotton n. wood n

. at a time by hand ink n. block n. at the beginning of knowledge n. spread v. introduction n. rather than CD-ROM one day

生产 发明 浏览 创造 棉花 木材 一次 用手工(制造) 墨水 板子,街区 在------的开始 知识 传播,散播 传入,介绍 而不是 只读光盘 某天

Find the similarity.
1.Books can be read on screen. 2.The information can be received online. 3.The machines can be carried easily.

.

can+be +动词过去分词

情态动词的被动语态
eg:

.

Books can be read on screen. Books can’t be read on screen. Can books be read on screen?

Can
be replaced by
?

match the main ideas.

Paragraph 1 Paragraph 2 Paragraph 3

a. The world before books
b. The inventions of printing

c. Life on paper and in print
d. Technology and books

Paragraph 4
Paragraph 5

e. Can books be replaced by
computers?

Read and match.
11th century in the future

2,000 years ago 2,000 years ago

today

Printing was developed
Books may be replaced by computers Paper was first created Information can be downloaded from the Internet

11th century Today
In the future

Complete the timeline
11th century in the future

2,000 years ago

today

2,000 years ago paper was first created

11th century printing was developed Today Information can be downloaded from the
Internet In the future books may be replaced by computers

Careful reading Read and answer
1. Why were books expensive and rare before the inventions of printing?(para2) Because in those days, books could be produced only one at a time by hand. 2. Why did ideas spread more quickly when books became cheaper?(para3) Because more people learned to read. 3. What can we use to get information?(para4) The books, Tv, Internet…

type

send an e-mail

play games

shop

listen to music

watch a movie

重难点突破
? 重点短语
1.on one’s way to 2. look through 3. be made of/from/ by /in / into 4. at a time 5. as a result 6. compare with 7.rather than 8. so that

重点句子
? 1) Every morning my father buys a newspaper on his way to work. ? 2) Can we imagine life without paper or print? ? 3) Paper was first created about 2000 years ago, and has been made from silk, cotton, bamboo, and, since the 19 th century, from wood. ? 4) When printing was developed greatly at the beginning of the 11th century, books could be produced more quickly and cheaply. ? 5)Today information can be received online, downloaded from the Internet rather than found in books. . ? 6) These machines are smaller and lighter than books so that they can be carried every day. ? 7) But will books be needed in the future? ? 8) Computers are already used in classrooms, and newspapers nad magazines can already be read on line. ? 9)So will books be replaced by computers one day?

Talk freely
Can books be replaced by computers?

The advantages and the disadvantages of books and computers. Advantages
Books
1. Easy to get and use 2.Often cheap 3.Bring happiness to us

Disadvantages
1.Get dust on shelves 2.Take up space at home 3.Use trees 1.Expensive 2.Need to know how to use it correctly 3.Use electricity

Comp uters

1.Keep lots of information 2.Many ”books” are free 3..Watch movies, listen to music, play games …;

Make a survey “Can books be replaced by computers?”, then write a report.


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