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1、Chapter2Electricmachines Whatkindofmachinesuseselectricity Howmanyelectricmachinesarethereinyourhome Doyouhaveacomputerathome Isituseful Questions Whatdoyoudowiththecomputer Percentoftheusage Internet washingmachine television airconditioner iron fridge 100 90 80 50 10 2 OUTLINE Language Listening R
2、eading Speaking Writing Morepractice Step1 Reading ReadPartAandBandcirclethenewwords thentrytofindoutthemeaningsofthem electricadj monitorn keyboardn mousen mainunitn drivesn speakern floppydiskn CD ROMn informationn 11 controlv 12 recordv 13 electronicsn 14 taskn 15 accordingto16 atpresent17 typev
3、18 containv 19 unimportantadj 20 spaceshipn drives monitor keyboard CD ROMs mainunit mouse speakers floppydisk Vocabulary The showswordsandpictures 2 Youusethe fortypingininformation 3 The recordsinformation 4 The helpsyoucontrolthecomputer monitor keyboard floppydisk mouse Vocabulary 5 The contains
4、allthecomputer selectronics 6 Wecanhearthesoundfromthe 7 Weput intothe inthemainunit 8 Wecanget fromdifferentways suchasreading watchingTV surfingtheinternetandsoon mainunit speakers CD ROMs drives information BFindthefacts Computers 1 maybeinsidesomemachinesinourhomes 2 candounimportantjobslikeflyi
5、ngspaceships 3 candotasksaccordingtotheprograms 4 atpresentareclevererthanpeople important notcleverer Reading Therearefiveshorttextstypicalofinformationleafletsornewspaperormagazinearticlesinthispart Listentothetapeandtrytotellthemainideaofeachparagraph P18 Hiddenhelpers Theremayalsobetiny hiddenco
6、mputersinyourhomebutyoumightbeunawareofthem Notes 1 tiny small 2 hidden hide 3 beunawareof notknowingaboute g Thestudentwasunawareofhismistakes Youaremoredependentoncomputersthanyourealize Notes 4 dependent adj needingsomeoneorsomething depend v 依赖 依靠 on e g Youshouldnotbedependentonyourparentsallth
7、etime 5 realize v notice knowaboute g Ididnotrealizeyouwereright P18 Hiddenhelpers Computersareprobablythebestcalculators andrarelygivewronganswers likediagramsandgraphs P19 Whatkindofjobscanacomputerdo Notes 6 probably adv maybe perhaps 7 calculator n smallelectronicdevice 8 rarely adv notoften sel
8、dom 9 diagram n alinedrawingthatshowshowsthworks 10 graph lineorlinesshowingthevariation Moreimportantly theycanoperaterailways 11 importantly adv adj important 12 operate v control keeprunning operationn 手术 Notes P19 Whatkindofjobscanacomputerdo butitisessentialforpeoplenottomakemistakes Otherwise
9、thecomputerwillnotworkwell 13 essential adj necessary mostimportant 14 otherwise conj Ifnot ifconditionsweredifferent Notes P19 Howdowegiveacomputerinstructions Theanswertothisquestionis fortheTimebeing No creatnewideas thandoctors judgesandteachers Thisraises 15 forthetimebeing adv Phr 16 creat v p
10、roduce make Notes P19 IsacomputerclevererthanIam 17 judge n aseniorlawofficer 18 raise v mentionsthforpeople Findthemeanings Page20 HardlyeverA sometimesB seldomC often2 dependentonA needingB trustingC playingwith3 realizeA allowB understandC decide C1 4 rarelyA oftenB sometimesC seldom5 essentialA
11、verydangerousB verysafeC verynecessary6 containA preventB removeC include C1 ABbeunawareofa make it worktinyb peoplewhomakediagramslegaldecisionsoperatec verysmallforthetimebeingd atpresentjudgese bringstoour7 raisesattentionf donotknowaboutg simpledrawings C2 Readandthink Page20 21 S1Theremaybetiny
12、computersinyourhome S2Where forexample S1Insideyour or D 2 S1Computerscandrawthings S2Forexample S1 and TVset telephone washing machine Diagrams graphs 3 S1Computerscandosomeimportantjobs S2Forexample S1 and D 4 S1Ahumanbraincandosomethingsbetterthanacomputer S2Forexample S1 Operating railways flyin
13、g aeroplanes Creating new flying spaceships ideas 6 S1Infuture computersmaychangeourlivesalot S2Forexample S1Wemayhave D 5 S1Infuture computersmaydosomejobsbetterthanpeople S2Whatjob forexample S1A job doctor s judge s teacher s nothing to do 3 S1Computerscandosomeimportantjobs S2Forexample S1 and D
14、 Pictures sound Step2 Listening Listentotherecording andcompletethedetailsofMabel sorderonPage22 Usefulwordsinthispart ballpointpen圆珠笔screenfilter显示屏officechair办公椅 P 1961 white 10boxes 30 300 C 4091 screenfilter 1 480 D 2791 floppydisks 5boxes 75 375 C 4083 officechair black 1 1800 1800 3069 P22 Lan
15、guage Thecomparative superlativeofadjectives Step3 er 动词 be as 形容词 副词原级 B as 动词 be 形容词 副词比较级 B than be 形容词最高级 范围 in on the 直接加 er est 如small smallersmallest去词尾不发音的e 加 er est 如wide widerwidest重读闭音节词结尾 且词尾只有一个辅音字母的 双写该辅音字母 加 er est 如 big biggerbiggest以辅音字母 y结尾的 变y为i 加 er est 如easy easiereasiest early
16、earlierearliest一般双音节和多音节的形容词或副词直接在该单词前加单词moremost构成其比较级和最高级 如polite morepolitemostpolite politely morepolitelymostpolitely 形容词或副词比较级和最高级的变化规则 不规则变化的形容词或副词 Practice 1 TheairinBeijingisgettingmuch nowthanafewyearsago A cleanB cleanerC cleanestD thecleanest 05北京 2 AmymakesfewermistakesthanFrank Shedoesherhomework A morecarefullyB morecarelesslyC morecarefulD morecareless 2007年南京 4 Whichdoyoulike Ipreferthisone A wellB bestC goodD better 3 Whogetsup yourfatheroryourmother Mymother 2007年长沙中考 earlyB e
