Unit+10+Lesson+1+How+Closely+Connected+Are+We 高中英語北師大版（2019）選擇性必修第四冊_第1頁
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Unit10Lesson1

HowCloselyConnectedAreWe?第一課時LearningobjectivesStudyandconcludethestructureandlanguagefeaturesofanexpositorywriting.Talkaboutthedevelopmentofthetheory.Betterunderstandingonthetheoryanditsenlightmentoverhumanbeings.Assessyourperformancebasedonthechecklist.Howmanycontactsdoyouhaveonsocialmedia?Howmanypeopledoyouregularlycommunicatewith?Activateandshare

IArandompeopleintheworldPredictwhatthepassageisabout.ReadandexploreThetheorySixDegreesofSeparationSkimthepassagetofindoutthestructure

andtexttype.What'sthetexttypeofthepassage？A.

Narrativewriting.B.

Argumentativewriting.C.

Expositorywriting.ReadandexploreStructurePart1：IntroductionPart2：DevelopmentPart3：ConclusionMainidea：SixDegreesofSeparationReadandexplore

What’sthetexttypeofthepassage？A.

Narrativewriting.B.

Argumentativewriting.C.

Expositorywriting.Adetailedexplanationofsomethingsuchasanideaorprocess.Scanthefirstpartofthepassage.WhatdoesthetheorySixDegreesofSeparationmean?Whoinventedthistheory?ReadandexploreReadandexploreThetheorywasfirstintroducedbyHungarianauthorFrigyesKarinthyintheearly20thcentury.Whoinventedthistheory?

ItstatesthatanypersononEarthcanbeconnectedtoanyotherpersonthroughachainofnomorethanfiveotherpeople.WhatdoesthetheorySixDegreesofSeparationmean?Scanandfinishthetimeline.1929FrigyesKarinthyReadandexplore1929FrigyesKarinthy1967StanleyMilgramMid-1990stwocollegestudentsinUS2001Columbiauniversity2011UniversityofMilan1967StanleyMilgramMid-1990sTwocollegestudentsintheUSProcessResults/Findings2001ColumbiaUniversity2011theUniversityofMilanTakenotesaboutthefourexperiments.1967StanleyMilgramMid-1990sTwocollegestudentsintheUS……

inthemiddleofAmerica……

Massachusetts（inthenortheastoftheUS）.Itonlytookbetween5-7people……

.……

tolink……

nomorethansixlinks.……

inuniversitiesacrosstheUS.2001ColumbiaUniversity2011theUniversityofMilan……24,163……18targetpeople……13differentcountries.……theaveragenumberoflinkswas6.……between721millionsocialmediausers.92%

……byonly4or5degreesofseparation.Talktoyourselfandintroducethetheoryinyourownwords.Compareandsummarize

Peopleinvolvedintheexperimentsarefromdifferenttime,ages,countriesandbackgrounds.Peoplewanttostudytherulesofhumansocialactivitiestoprovethatwearecloselyconnectedandtheworldissmall.DifferencessimilaritiesWhatwritingtechniquesareusedinthetext?Whatdothetitleandthelastparagraph

haveincommon?Whatcanyoulearnfromthetheory?Thinkandshare

Writingtechnique：______________________1.Whatwritingtechniquesareusedinthetext?DefinitionThinkandshare

Writingtechnique：______________________ThinkandshareGivingexamplesItonlytookbetweenfiveandsevenpeople……throughnomorethansixlinks.Theexperimentinvolved24,163emailchains…92percentwereconnectedbyonly……with18targetpeoplein13differentcountries……analysedtherelationshipbetween721million…

Writingtechnique：______________________ListingnumbersItonlytookbetweenfiveandsevenpeople……throughnomorethansixlinks.Theexperimentinvolved24,163emailchains…92percentwereconnectedbyonly……with18targetpeoplein13differentcountries……analysedtherelationshipbetween721million…Inthe1950s,anattemptwasmadebytwoscientiststoprovethetheorymathematicallyOncetheparcelhadbeenreceivedbythisperson,……

untiltheparcelcouldbepersonallydeliveredtothecorrectperson.SoonthegamewasbeingplayedinuniversitiesacrosstheUnitedStates.Theconceptwasfirsttalkedaboutaslongagoasinthe1920s.

Writingtechnique：______________________PassivevoiceobjectivescientificaccurtateconvincingDefinitionGivingexamplesListingnumbersPassivevoiceWritingtechniques2.Lookatthetitleandthelastparagraph.

Whatdotheyhaveincommon?ThinkandshareToarousereaders’interestandinspirefurtherthinking.Whydoesthewriterusequestionstobeginandendthearticle?

3.Whatcanyoulearnfromthetheory?ThinkandshareSummaryThestructureofanexpositorywritingTheuseofwritingtechniques,likelistingnumbersandgivingexamplesThemeaningandenlightmentofthetheorySixDegreesofSeparation

ReflectingAreyouawisereader?

ThethingsIcandoEvaluationIcandrawamindmapforthestructureofanexpositoryessay.54321Icansummarizeanexpositoryessaywithitsstructure.IcandiscoverthelanguagefeaturesofanexpositoryessayIcandevelopsomedeeperthoughtsaboutanexpositoryessay.Iraisemyconfidenceinreadingexpository.HomeworkMakeasummaryofthepassagein160words.Basedonthestructureandwritingtechniqueswelearnedtoday,writeanessaytointroduce

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