单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit 3,Online Tours,Period 1 Welcome to the unit,computers,Free talk,Do you have a computer at home?,What can you do with the computer?,How many parts are there in a computer?,What is each part called?,Does it have more uses(,用途,)?,What can we use it for?,screen,main unit,keyboard,mouse,mice,CD-ROM drive,光驱,printer,modem,调制解调器,USB drive,speaker,mdem,menu,（菜单）,program,(,程序,),icons(,图标,),Fill in the blanks.,A _ is used for typing,information into computer.,2.A _ is used for moving the,cursor(,光标,)on the screen.,3.A _ is used for putting the words,and pictures onto paper.,keyboard,mouse,printer,4.Programmers(,程序员,)design _ to control computers.,5.We can see words and pictures on the _.,6._ shows a list of information and lets you choose what to do.,programs,screen,Menu,A:Whats this?,B:Its a,keyboard,.,A:What can we use it for?,B:We can use it for,typing,.,keyboard,(type),screen,(see words and pictures),mouse,(click on icons for more details),printer,(print words and pictures,out),Practice:Different uses of computers,draw and design,search for information,do word processing,play games,write computer programs,send and receive,e-mails,chat with friends,watch videos/TV programmes,Listen and answer.,What does Simon usually use his computer for?Why?,He usually uses it to search for information.,Because its fast and easy.,DO PAIR-WORK,Work in pairs.,Use Daniel and Simons conversation as a model.,Its time for your turn!,Pair work:,A:,What do you use your computer to do/for?,B:I usually use it to/for.A:Why?B:,A:How often,?B:,.,.(interesting/fast/easy/funny/safe/cheap),Do Eddie and Hobo know well,about computers?,Listen,read and answer:,Have Hobo and Eddie ever seen a computer,？,No,they havent.,2.What do Eddie and Hobo think the computer looks like?,They think it looks like a TV.,3.Do you know what the remote control really is?,It is a mouse.,Fill in the blanks,Eddie and Hobo know,1,.,(everything,nothing),about computers.Hobo thinks the,computer looks like a,2,.,.Eddie agrees,with Hobo and he thinks the mouse is the,3,.r,c,.They want to use the,mouse to,4,.,the channel because the,programme began an hour,5,.a,.,nothing,TV,emote,ontrol,change,go,We should make good use of(,合理利用,)computers.,Do not spend too much time on computers,especially the online games!,Its harmful to our eyes,health,study.,It costs too much money.,Discussion,Writing,Write about advantages and disadvantages of using computers.,Computers are widely used in our modern life.It can help us a lot in many ways.,However,I think,