高中英语必修二unit3课件PPT文档格式.ppt

高中英语必修二unit3课件PPT文档格式.ppt

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,Computers,Iamveryoldnow.IwasborninChina.Manypeopleusedmeforcalculatinginthepast,butnowIamabitlonelybecausetheydontlikemenow.DoyouknowwhoIam?

abacus,Guessmore:

Iamverysmall.Icanbeusedforcalculating.InChina,alotofstudentsusemewhensolvingmathematicalproblems.DoyouknowwhoIam?

calculator,Icanbeusedforcalculating.Besides,IcanalsobeusedforwatchingDVD,sendinge-mailandcommunicatingthroughtheInternet.However,IamnotaPC,becauseImsmallenoughforyoutotakemewithyou.,notebookcomputer,DoyouknowwhoIam?

Ahugecomputer,APC,thehistoryofthecomputer,laptop（手提电脑）,PDA（掌上电脑）,Caculator计算器,abacus,WhoamI?

Skimming:

Gooverthestorytofindoutwhothespeakeris.Writedown3sentencestosupportyouridea.,IwasabletosharemyknowledgewithothersthroughtheWorldWideWeb.,”MyrealfatherwasAlanTuring.”,IwasbuiltasanAnalyticalMachinebyCharlesBabbage.”,Timeline,Thecomputerbeganasacalculatingmachine,1822,AlanTuringwroteabooktodescribehowcomputerscouldbemadetowork,Computershadgrownaslargeasaroom.,1960s,Computerswereusedinofficesandhomes,Computerswereusedinofficesandhomes.,Scanning:

TrueorFalse,AlanTuringbuiltanAnalyticalMachinetosolveanymathematicalproblems.Peoplebegantorealizethatthecomputergotclevererandquickerwithtimepassing.Thecomputerbegantoservethehumanracesinceitwasbroughtintopeopleshomes.Sincethe1970s,thecomputerwasusedbypeoplearoundtheworldthroughtheInternet.5.Thelargerthecomputeris,themorememoryithas.,F,T,F,T,F,auniversalmachine,itsbirth,IbecamesmallandthinbutIgotclevererandcleverer,quickerandquicker.AndmymemorybecamesolargethatIcouldntbelieveit!

correctthewrongsentences,1.Choosethebestanswers1）Whatsthemainideaofthetext?

A.Thecomputerwantstofind“whoheis”.B.Thefunctionalchangeofthecomputer.C.Thecomputerbecomespopulararoundtheworld.D.Thehistoryofthecomputer.,Comprehending:

2）Whatcanyouinferfromthetext?

A.Thecomputerhasartificialintelligence.B.Thecomputerchangesalotovertheyears.C.Thecomputerwasnotconnectedbyanetworkuntilintheearly1960s.D.Nowthecomputercanonlybeusedtodealwithinformation.,Q1:

HowdidthecomputerworkasanAnalyticalMachine?

Thecomputerfollowedinstructionsfromcardswithholes.,2.Questions,Q2:

Inhowmanywaysdowesaythecomputerchanged?

Whatarethey?

Size:

Intelligence:

Speed:

Function:

Peopleopinion:

smaller,quicker,cleverer,calculating-dealingwith,communicatingwith,clever&

useful,1960s,Consolidation:

Retelling,1Amonitoris2Thescreenis3Akeyboardis4Amouseis5ACD-ROMis6Aharddiskis,（a）thepartofacomputerthatstoresinformation.（b）thepartofthecomputerthatyoutypeon.（c）thepartofthecomputerthatlookslikeatelevision（d）somethingyouusetoclickonthings（files,etc.）.（e）thepartofthemonitorthatyoulookat.（f）aseparatediskthatcontainslotsofinformation.,Matchthewordswiththeirmeanings.,Internet,1.Whatcanthecomputerbeusedfor?

Task2.Discussion,schoolworkgamesemailsmusicandfilmschatinformationphotosshopping,Ourlifehaschanged!

palmtop,smallerdesktop,convenientlaptop,Whataretodayssmallercomputerslike?

2.Whataboutinthefuture?

virtualkeyboards虚拟键盘,Nose-topkeyboard-vest,robot,Whataboutinthefuture?

Supposeyouareareporter.NowyouareinterviewingMr./MissComputer.Samplequestions:

Whatdoyouliketoeat?

Whatareyourhobbies?

Whatisyournewestfunction（功能）?

Canyousaysomethingaboutyourfutureplan?

etc.,Task3.Role-play,Homework:

Reviewthepassage2.DoEx.1-3onP19-20.3.ReadthestoryaboutBillGates.,