Unit4Grammarinuse（学生版学案）高中英语上外版（2020）选择性

I.IdentifyformsofemphaticstructuresInteractiveTask1:AnswersomequestionsaccordingtothelastparagraphinReadingA.Q1:What’stheworstchangeforouratmosphere?Q2:Whatdemonstratesthevillainyofcarbondioxide?Q3:Whydoestheauthorusethesentencepattern“Itis…that…”?InteractiveTask2:Underlinethesentenceswithemphaticstructuresinthedialogue.A:Iscarbondioxideharmful?B:No.Itmakesupaverysmallpercentageofthegasesintheworld.Infact,carbondioxideisessentialforlife.Itiscarbondioxidethatplantsneedtoproduce“food”.A:Inthatcase,themorethebetter?B:Well,it’snotoftenthecase.Itisduetotheincreaseintheconcentrationofcarbondioxideintheatmospherethattheplanet’saveragetemperatureisgoingup.Itisthegreenhouseeffectthatwecallit.A:So,istheearthgettinghotter?B:Yes.Theincreasedtemperaturedoeschangeourworldfortheworse.Thepolaricecapsaremelting,andoursealevelisrising.A:Howcanwestopglobalwarming?B:Allnationsacrosstheworldneedtoworktogether.Itisallofuswhoshouldtakethechallenge.强调句基本结构:强调不同成分例句II.PracticetheuseofemphaticstructuresInteractiveTask3:Rewriteeachofthefollowingstatementswiththeemphaticstructurebyemphasisingtheunderlin1.Plantsabsorbcarbondioxideandconvertitintotheirowntissue.2.Intheprocessplantsreleaseoxygen,whichisnecessaryforhumanandanimallife.3.Carbondioxideinalargequantitydamagestheenvironment.4.Theearthmaintainsabalancebygainingheatandlosingitinturn.5.Theconcentrationofcarbondioxidewillbeabout0.066percent.InteractiveTask4:Answerthefollowingquestionswithemphaticstructuresbyreferringto1.Whatdoplantsreleaseaftertheyabsorbcarbondioxide?2.Whateffectsofcarbondioxideonourlifemakepeopleconsideritthevillainintheatmosphere?3.Whatdoeswecalltheprocesswhencarbondioxideblockstheearthfromradiatingheatintospace?4.Sincewhen,hastheconcentrationofcarbondioxidemovedupwardseachyear?5.Iheardsomeglaciersmeltedbecauseofglobalwarming,didthey?6.Wetakeactiontopreventthegreenhouseeffectfromgettingworse,dowe?________________________________________________________III.UseemphaticstructuresinthecontextInteractiveTask6:Haveadiscussionabouttheconceptof“heavenandhumanoneness”withtheexampleofcarbondioxide.Useemphati