英语八年级下册Lesson 21 Books or Computers?教课内容课件ppt

这是一份英语八年级下册Lesson 21 Books or Computers?教课内容课件ppt，共19页。PPT课件主要包含了paper，Internet，Homework等内容，欢迎下载使用。

Presentatin
Language Pints
Hw can we get knwledge?
By talking with thersBy watching TVBy reading bksBy reading e-bks
by hand 用手；手工keep n 继续
In ancient times, peplewrte each wrd_______.T write ne bk, they usually _______writing fr a lng time.
Wrds and phrases
Learn sme new wrds
This is a ____________.With ______ technlgy, it was pssible t ________ knwledge.
mdern adj.现代的printing press 印刷机pass n 传递by hand 用手；手工keep n 继续
printing press
But nw a new kind f bks _________:the ________bk(e-bk). It is easier fr peple t buy and _____ nline.
mrden adj.现代的printing press 印刷机pass n 传递
appear v.出现electrnic adj.电子的sell v.出售printing press 印刷机pass n 传递by hand 用手；手工keep n 继续
Read the passage and answer 3 questins.
1.Hw did peple pass n their knwledge withut bks in ancient times?2.What made it pssible t print bks quickly?3.What kind f bks quickly changed peple’s reading habits?
By telling striesThe printing press.
The electrnic bks(e-bks).
Read Passage1, 2 and 3 again and fill in the blanks.
With paper, peple began t _____ _______ their stries. Peple wrte each wrd ________. It tk a____time t write ne bk.__________culdn’t travel ___.
When the printing press _________, it changed the wrld. The ________ printing press can print bks ________, and makes it pssible fr the _______ persn t have ______ access t read bks.
Printing press
___________ and the Internet changed the wrld. They made it pssible fr a new kind f bk: the _______ bks. Traditinally bks culd nly be _______ and sld at a stre, but tday yu can buy and _______ bks ______.
Read the lessn and put the sentences in the crrect rder.
It tk a lng time t write just ne bk. It made it pssible fr cmmn peple t readbks.The e-bk appeared.Peple had n bks, and they shared knwledge by telling stries.The printing press appeared.Peple dwnlad bks frm the Internet.With paper, peple began t write dwn stries.
Wrk in grups
D yu like reading paper bks relectrnic bks? Why? Talk withyur members in a grup.
1. In ancient times, there were n bks, and peple passes n their knwledge by telling stries. 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 t tapes. 我通过听磁带学英语。
Language pints
2. It tk a lng time t write just ne bk. 仅仅写一本书就要花费很长一段时间。句型It takes sb. sme time t d 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“t d sth.”；take 随时态改变，本句用的是一般过去时态，所以用tk。如：It tk me tw hurs t clean my huse yesterday. 我昨天用了两个小时打扫房子。
I. 根据所给汉语提示，完成下列句子。1. A cmputer is a useful _______ (机器).2. There are tw ________ (印刷) presses in ur schl.3. What's the meaning f the secnd _________ (段落) in the text?4. ________ (哪一条) way shall we g?5. I bught a bk abut _______ (现代的) histry yesterday.
II. 用所给单词的适当形式填空。1. I think the Internet is ______________ (imprtant) than the printing press.2. The nvel __________ (write) by Qing Ya.3. We can find infrmatin ______ (quick) n the Internet.4. The machine can make __________ (thusand) f bks a day.5. If yu ______ (frget) the telephne number, yu culd lk it up in the bk.
mre imprtant
was written
III. 连词成句。1. hand, the, by, mdel, was, plane, made __________________________________ .2. get, hw, yu, infrmatin, did, the __________________________________?3. the, answer, English, questins, in, please __________________________________ . 4. the, Internet, peple, lets, quickly, infrmatin, search, fr_______________________________________ .5. much, sund, travels, than, faster, light __________________________________ .
Light travels much faster than sund
The mdel plane was made by hand
Hw did yu get the infrmatin
Please answer the questins in English
The Internet lets peple search fr infrmatin quickly
Tpic: Which inventin d yu think is mre imprtant—the printing press r the Internet?(Write a shrt passage and give at least three reasns t supprt yur chice.)