英语八年级下冀教版Unit 4 The Internet Connects Us Lesson 21 Books or Computers_课件(共13张PPT).ppt
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1、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 ItlHow ma
2、ny books have you read this year?lHave 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
3、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:链接:(1) spendon / in 意为“花费”,主语是表示人的名词或代词,spend后接
4、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) payfor意为“为付款”,人作主语,常用pay some money f
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