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1、Lesson 43: Books or Computers?,初二英语 刘敏,New words,printing press n. 印刷机 machine n. 机器 modern n. 现代的 which pron. 哪一个；指提到的事物,Which one did more? 哪一个更重要？ which疑问代词哪个，哪一个，哪一些。如： Which pen do you like?你喜欢哪枝钢笔？ Which came first, the chicken or the egg? 哪个先生产，小鸡还是鸡蛋？ which的其他用法 1)关系代词，引导一个定语从句，意思是“的（那个），的（那
2、些）”。如： The trees which stand by the river are large and tall.河边的树又高又大。 2)关系代词，那个，那些 He struck the poor dog, which had never done him harm.他打了那条可怜的狗，那条狗从未伤害过他。 3)形容词，哪，哪一个 Which foreign language are you studying? 你在学哪种外语？,book,What is the book made of? What is the paper made from? What made this book
3、?,paper,trees,A printing press,Which one did more to change the world?,A computer,A printing press made it, (People could make many books quickly) The internet, (It lets people find and use information very quickly),Before the printing press, somebody wrote by hand every day with a pen, (slow!),Book
4、s or Net?,slow,quickly,more quickly,Listen,read and answer,What is a printing press?,The printing press is a machine that can make lots of books in a short time.,How were books made before the printing press?,before the printing press, books were written by hands. Sometimes, people worked for years
5、to make books by hands.,They are writing by hand,Before the printing press, somebody write every book by hand with a pen. 在印刷机之前，每本书是人用钢笔手工写的。 by hand手工 That old book was written by hand.那本旧书是人工抄写的。 I like to eat dumplings made by hand.我喜欢吃手工包的水饺。 【拓展】 by hand还有“用体力”“由专人”等意思。 The letter was delivere
6、d by hand.此信由专人递送。,How did books change information?,The printing press could make many books quickly. Because there were more books, more people could read books. Information began to travel much faster and much farther. Books also “kept” information for you. If you forgot something, you could look
7、 it up.,The internet helps me do my homework. I can find lots of information in just a few minutes.,Which invention do you think is more important- the printing press or the internet?,用所给词的适当形式填空 Who is_, monkey or elephant? (strong) Whose sweater is_, Anns or Marys? (expensive) Who writes_, Li Ming
8、 or LI Ping? (well) Who listens to the teacher_, Jenny or Danny? (carefully),stronger,more expensive,better,more carefully,The printing press is a machine that can make lots of books in a short time. 印刷机是一台在很短的时间内能印刷许多书的机器。 1)machine机器。如：washing machine洗衣机 printing machine(=printing press)印刷机 2) in
9、a short time在很短的的时间内，in在以后 “in+时间段”通常用于将来时。如：My father will be back from Beijing in a week.我爸爸一周之后就从北京回来。 “after+时间”也可以用于将来时，但after之后加时间点。例如： Hell come back after seven oclock.他将在7点钟回来。,How did books change information? 书是怎样改变世的？,change v.& n. 1) v.改变，变革，改造。交换 change the world 改变世界 change ones mind改
10、变主意 Change planes at Zhengzhou for Beijing.在郑州换飞机去北京。 Can you change me a dollar? 你能兑换给我1美元吗？ 2) vt.变，改变，变化。换衣；换车 The weather changes very often in England.在英国天气常常变化。 The baby needs changing. 婴儿需要换衣服了。 3)n.改变，变化，更换；调换；替换物。零钱；找头，（不可数） Many changes have taken place since 1978. 自1978年以来发生了许多变化。 Lets go to the restaurant for a change.咱们去饭店换换口味吧。 Here is your change.这是你的零钱。 4) changeinto把变成 Heat changes water into steam. 加热使水变成蒸汽。,Project: WHICH ONE DID MOER?,Thank you Bye-bye,