北师大高中英语必修二 （Huamns and nature）Topic Talk 教学课件

Unit5HumansandNature

TopicTalk

Whatcomestoyourmindwhenyouseetheword“nature”?Activity1Natureanimalsplantsforestsfloodsrivers…Pagethroughamagazineontravelornature.Showandexplainyourexampleofnatureyoufound.Activity2PreviewthetextintheTextBuilder.Findwordsorexpressionsyoudon’tknow.wildanimalscollectivelyaverbalorwrittenremarkexpressinganopinionorreactionfullofpeople,leavinglittleornoroomformovementallthevisiblefeaturesofanareaofland,oftenconsideredintermsoftheiraestheticappealalivetheweatherconditionsprevailinginanareaingeneraloroveralongperiodthebranchofbiologythatdealswiththerelationsoforganismstooneanotherandtotheirphysicalsurroundingswildlifecommentcrowdedlandscapelivingclimateecologyListentotheradiointerviewandcomplete.Actually,thewholecityisquite_____________.CommentsAbout66%ofthecityiscoveredwith_________________________.NaturelandscapeIt’sgreatforwildlife.Youcanseedifferentkindsof_____.LivingThingsThere’sless________________nowthanfiftyyearsago.Thebiggestenvironmentalproblemsare____________and_____________.EnvironmentalProblemswaterorgreenspacegreenbirdswaterpollutionairpollutionnoisepollutionActivity3Talkaboutnaturalenvironmentneartheplacewhereyoulive.a.Doyouhaveareasofnatureclosetoyou?b.Doyouhaveagarden?c.Istherewildlifecloseby?Activity41.Previewtheparagraph.Thetwostudentswereshockedatthelectureonnature.Theydidn’tknowthatwewere1_____________somuch.Theylearntthatweoverusednature.Asaresult,nature2_________,feltpain,andfinally3______________onus.Theyrealisedthatnatureisourhome.Humans,animals,plantsand4__________________liveinit.Weshould5________________our“home”.Weshould6_________nature.Activity42.Listenandcomplete.Thetwostudentswereshockedatthelectureonnature.Theydidn’tknowthatwewere1_____________somuch.Theylearntthatweoverusednature.Asaresult,nature2_________,feltpain,andfinally3______________onus.Theyrealisedthatnatureisourhome.Humans,animals,plantsand4__________________liveinit.Weshould5________________our“home”.Weshould6_________nature.harmingnaturegothurtturneditsbackallotherlivingthingstakecareofprotectActivity5What’stherelationshipbetweenhumansandnature?

Trytolinkthewordsandconceptswehavelearnttoday.ThankYouUnit5HumansandNature

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Whatdoyouknowabouttheuniverse?Activity1universestarsplanetsvastnessinfiniteness…………Whatdoyouwanttoknowabouttheuniverse?Quiz13.8billion 27.5billion 46billion1.Theuniverseisabout__________yearsold.2.Theobservableuniverseisabout_________lightyearsacrossindiameter.3.Todaythedistantobjectslikestarsthatwecanobserveareabitmorethan____________lightyearsaway.Activity2Watchthefirstpartofthevideo.Checkyoupredictions.1.Theuniverseisabout__________yearsold.2.Theobservableuniverseisabout_________lightyearsacrossindiameter.3.Todaythedistantobjectslikestarsthatwecanobserveareabitmorethan____________lightyearsaway.13.8billion 27.5billion 46billion93billion13.8billion46billionActivity3Watchtherestofthevideo.Completethetable.QuestionsObservableUniverseWholeUniverse1.Howbigisit?2.Isthereanedge?3.Isthereacentre?4.Isitgettingbigger?Theobservableuniverseisabout93billionlightyearsacrossindiameter.Infinite.Yes.Temporaledge.No.Yes.Earth/You.No.Yes.Yes.Activity4Watchagainanddiscuss.1)WhatistheEarthcomparedto?Isthecomparisonusefulinunderstandingtheinfinitenessoftheuniverse?2)Whatmethodsdoesthepresenterusetoenableviewerstounderstandthispieceofknowledgeinphysics?ThesizeoftheEarthwithintheobservableuniverseisroughlyequivalenttothesizeofaviruswithinthesolarsystem.Thatdoesnothelpmuch,becausewecannotreallyappreciatetheincomprehensiblesmallnessofavirusnorthebewilderingbignessofoursolarsystemeith