新冀教版八年级英语下册lesson21ppt课件.ppt

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1、Lesson21:Books or Computers?How can we get knowledge?By talking with othersBy watching TVBy reading booksBy reading e-booksWithout paper,how can we get knowledge?By telling stories.China was the first to invent paper during the Han Dynasty.It changed the world.by hand 用手；手工keep on 继续In ancient times

2、,peoplewrote each word_.To write one book,they usually _writing for a long time.Words and phrasesby handkept onThis is a _.With _ technology,it was possible to _ knowledge.modern adj.现代的printing press 印刷机pass on 传递by hand 用手；手工keep on 继续 Words and phrasesprinting pressmodern passonBut now a new kind

3、 of books _:the _book(e-book).It is easier for people to buy and _ online.Words and phrasesappearedelectronic sellmorden adj.现代的printing press 印刷机pass on 传递 appear v.出现electronic adj.电子的sell v.出售printing press 印刷机pass on 传递by hand 用手；手工keep on 继续 Read the passage and answer 3 questions.1.How did peo

4、ple pass on their knowledge without books in ancient times?2.What made it possible to print books quickly?3.What kind of books quickly changed peoples reading habits?By telling storiesThe printing press.The electronic books(e-books).PaperRead Passage1,2 and 3 again and fill in the blanks.With paper,

5、people began to _ _ their stories.People wrote each word _.It took a_time to write one book._couldnt travel _.Informationby handlongwritedownfarPrinting pressWhen the printing press _,it changed the world.The _ printing press can print books _,and makes it possible for the _ person to have _ access

6、to read books.appearedmodernquicklycommon easyInternet_ and the Internet changed the world.They made it possible for a new kind of book:the _ books.Traditionally books could only be _ and sold at a store,but today you can buy and _ books _.electronicboughtsell onlineComputersRead the lesson and put

7、the sentences in the correct order.It took a long time to write just one book.It made it possible for common people to readbooks.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

8、began to write down stories.3561427 Talk with your partnersAdvantage DisadvantageBooks E-booksWork in groupsDo you like reading paper books orelectronic books?Why?Talk withyour members in a group.No matter what we have,a computer,a tablet,a laptop,an e-reader or a real book,keep on reading!HomeworkDo you like reading paper books or electronic books?Why?Talk with your partner and make up a dialogue.