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 many 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，沒有書，人們通過通過講故事傳遞知識。by是介詞，后面可以加名詞或動名詞短語，意為“通過方式（途徑）”。如：I learn English by listening to tapes.我通過聽磁帶學(xué)英語。2.It took a long time to write just one book.僅僅寫一本書就要花費很長一段時間。句型It takes sb.some time to do sth.意為“某人花費多長時間做某事”，it是形式主語，真正的主語是動詞不定式“to do sth.”；take 隨時態(tài)改變，本句用的是一般過去時態(tài)，所以用took。如：It took me two hours to clean my house yesterday.我昨天用了兩個小時打掃房子。P2鏈接：鏈接：(1)spendon/in 意為“花費”，主語是表示人的名詞或代詞，spend后接表示金錢或時間的詞，on后接名詞，in后接V-ing形式，也可省略in。如：I spent twenty yuan on the dictionary.我花二十元錢買的這本字典。They spend one hour doing their homework every day.他們每天花費一小時做作業(yè)。P1P3(2)cost意為“花費”，主語是表示物的名詞或代詞，常用于“sth.cost sb.some money”。如：The pen cost me ten dollars.這支鋼筆花了我十美元。(3)payfor意為“為付款”，人作主語，常用pay some money for sth，pay的過去式和過去分詞為paid。如：My mother paid 30 dollars for her sweater.媽媽買這件毛衣花了三十美元。ExercisesI.根據(jù)所給漢語提示，完成下列句子。根據(jù)所給漢語提示，完成下列句子。1.A computer is a useful _(機器機器).2.There are two _(印刷印刷)presses in our school.3.Whats the meaning of the second _(段落段落)in the text?4._(哪一條哪一條)way shall we go?5.I bought a book about _(現(xiàn)代的現(xiàn)代的)history yesterday.modernmachineprintingparagraphWhichII.用所給單詞的適當(dāng)形式填空。用所給單詞的適當(dāng)形式填空。1.I think the Internet is _(important)than the printing press.2.The novel _(write)by Qiong Yao.3.We can find information _(quick)on the Internet.4.The machine can make _(thousand)of books a day.5.If you _ (forget)the telephone number,you could look it up in the book.forgot more importantwas writtenquicklythousandsIII.連詞成句。連詞成句。1.hand,the,by,model,was,plane,made _.2.get,how,you,information,did,the _?3.the,answer,English,questions,in,please _.4.the,Internet,people,lets,quickly,information,search,for_.5.much,sound,travels,than,faster,light _.Light travels much faster than soundThe model plane was made by handHow did you get the informationPlease answer the questions in EnglishThe Internet lets people search for information quickly