Lesson 21课件2023-2024学年冀教版英语八年级下册

Unit 4 The Internet Connects Us Lesson 21 Books or Computers? New Words press appear modern electronic sell [pres] n.印刷机； 新闻界 [əˈpɪə(r)] v.出现;呈现;来到 [ˈmɒdn] adj.现代的;新式的 [ɪˌlekˈtrɒnɪk] adj.电子的 [sel] v.(sold/sold) 卖;出售 The history of books is very interesting. In ancient times, there were no books,and people passed on their knowledge by telling stories. Later, people learned how to write and make paper. With paper, people began to write down their stories.They wrote each word by hand. It took a long time to write just one book! Then, the printing press appeared and changed the world. With modern technology, it was possible to print books quickly. It was also possible for common people to read books. This is a modern printing press. It can make thousands of books a day. Recently, computers and the Internet changed the world again. A new kind of book appeared: the electronic book (e-book).E-books are quickly changing people's reading habits. It is easier for people to buy and sell books online. 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! Which invention do you think is more important -the printing press or the Internet? Phrases 在古代 传递；前进 手工 印刷机 成千上万 越来越快 继续 in ancient times pass on by hand printing press thousands of faster and faster 比较级+and+比较级 keep on 知识点讲解 1. It took a long time to write just one book! 辨析 take & cost & spend & pay cost v. 花费 （cost-cost) 物+cost+人+金钱 The ticket cost me ten dollars. 这张票花了我十美元。 spend v. 花费 （spent-spent) 人+spend+时间/金钱+in doing/on sth. I spent all my pocket money on books. 我所有的零花钱都花在(买)书上了。 take v. 花费 （took-taken) It + takes/took +人+时间+to do It took me an hour towalk there. 我花了一小时走到那儿。 pay v. 支付 （paid-paid) 人+pay+金钱+for+物 He paid ＄5 for that book. 他花了5美元买那本书。 2. No matter what you have a computer, a tablet, a laptop, an e-reader or a real