2023學(xué)年完整公開課版,Unit3Computers20

Unit3ComputersReadingLookatthefollowingpicturesandsaytheirEnglishnames.

I.Warmingupabacuscalculator

WarminguphugecomputerPC

WarminguplaptopPDA

WarminguprobotWhat’snext?

Discusswithyourpartnerthefollowingquestions.Whatdothesepictureshaveincommon?Whatdotheytellyouaboutthedevelopmentofcomputers?Whatdoyouthinkwillbethenextdevelopment?

Warmingup

Workinpairs.Trytoputtheseinventionsinanorderaccordingtothetimewhentheyappeared.Thenreadthepassagequicklyandchecktoseeifyouwereright.

()analyticalmachine ()laptop ()calculatingmachine

()robot()PC()universalmachine

II.Pre-reading251643Readthepassagequicklyandcheckyourprediction.Wasitcorrect?Whatisthemainideaofthepassage?Thispassageisabout_________________________.III.While-readingthedevelopmentofcomputersInpairsguessthemeaningofthefollowingnewwordsfromthereadingpassage.Thencheckyourguessesusingadictionary.

A B technological revolution simplify application personal solve reality explore happiness goalWhile-reading根據(jù)構(gòu)詞法猜測詞義

ThemeaningofthewordsingroupAcanallbeguessedfromtheirformation.

Eachpairofwordshasthesameroot（詞根）. technology technological simple simplify person personal real reality happy happiness

While-reading根據(jù)上下文猜測詞義

ThemeaningofthewordsingroupBcanallbeguessedfromcontext.

Example:revolution:Fromtheprevioussentenceweknowthataftertheworkoftheoperator,“‘I’could‘think’logicallyandproduceananswerquickerthananyperson”,whichindicatesagreatimprovement,so“revolution”heremaymean“acompletechange”.

While-reading

Readthepassageagain.Findthetopicsentenceofeachparagraphandthesupportingdetails.

Paragraph1:OvertimeIhavebeenchanged quitealot. 1.calculatingmachine 2.analyticalmachine 3.universalmachine 4.laptopWhile-reading

Paragraph2:Thesechangesonlybecamepossible asmymemoryimproved.1.tubes2.transistors3.chips4.network5.WorldWideWebWhile-readingParagraph3:Sincethe1970smanynew applicationshavebeenfoundforme.1.communications 2.finance 3.trade 4.robots5.mobilephones6.medicaloperations7.spacerockets8.providingalifeofhighqualityWhile-readingSummaryAtopicsentencesetsoutthemainideaofaparagraph.Atopicsentenceisusuallythefirstorlastsentenceofaparagraph.While-readingReadthepassagequicklyandfinishthetimelinebelow.1642:___________________________________________1822:TheanalyticalmachinewasmadebyCharles Babbage.____:___________________________________________1940s:_______________________________________________:Thefirstfamilyofcomputerswasconnectedtoeach other.1970s:__________________________________________Now:__________________________________________

IV.Post-readingThecomputerbeganasacalculatingmachine.Thecomputergrewrapidlybothinsizeandinbrainpower.1936Thecomputerhadgrownaslargeasaroom.1960sComputerswereusedinofficesandhomes.Computersconnectpeopleallovertheworldtogether.

Post-reading

Workingroupoffourandbrainstormalistofthingsthatyou,yourschoolandyourfamilyusecomputersfor.Discusshowcomputershavechangedourlives.Thinkaboutwhatyouwouldhavetodoifyoucouldnotusecomputersanymore.Giveareporttotheclass.

Youcanusethenewwordsinthereadingpassageandthefollowingexpressionstohelpyouinyourdiscussion.

Ithink/don’tthinkthat… Pleasegivemeyourreasons. Whatmakesyouthinkso? Ithink…because(of)… As/Since…,Ithink… First…Second… Iagree/don’t