课件18张PPT。Unit 3readingcomputersSun qihuaPre-readingSolve a riddle : one thingIt has a big faceWith many keysTwo big ears which can play musicYou can watch TV or see a movie using itIt can be seen in the office, classroom and at home.Download informationguessWe can see many brands of computersLenovo 联想Haier 海尔神州Tinghuatongfang清华同方惠普DellTCLAcer宏基What makes up the computer? And can you name each part ?GPU/显卡Hard diskMain board/主板CPU/处理器
(Central processing unit)NIC/内存mouseKey-boardSound boxscreenheadphoneWho am I ?Do you like it?First-reading1.Where were you in 1642?2.What happened to you in 1822?3.Who was your real father?4.What happened to you in the 1970s?1.Where were you in 1642?In France2.What happened to you
in 1822?I was built as an analytical machine by Charles Babbage3.Who was your real
father?Alan Turing4.What happened to you
in the 1970s?I was brought into
People’s homes.second-readingcalculating machine: analytical machineAlan Turing wrote a book to describe ……had new transistors, smaller, connectedpeople’s homeconnect all over the world The development of computers technologyB. calculating machineF. analytical machineD. artificial intelligenceC. PC (desktop/notebook)A. universal machineE. InternetABCDEFThe order :Third-readingPeople say computers have more advantages than disadvantages. Do you think so?advantagesdisadvantagesABSuch as :Send an e-mailIt is bad for your eyesDownload(下载) informationSee a movie or watch TVPlay computer gamesBuy goods you want Do some chattingadvantages- - - - - - - improve people's ability of thinking Too expensiveAddictive to play computer games - - - - - - - disadvantagesPeople can not write right Chinese lettersVirtual things (虚拟的) writingSummary1.Should students
surf the Internet?2.Should students
go to the net bar? net barat homeHomeworkBye-bye!