【课件】Unit3SeaexplorationUsinglanguage课件-2021-2022学年高二英语人教版（2019）选择性必修第四册

UNIT3

SEAEXPLORATION

UsingLanguageWarmingup

Whatdoyouknowaboutseaexploration?

discovernewspeciesdetectenergyresourcespredictpotentialdisastersSubmarineMineralResourcesWhataretheadvantagesofseaexploration?

Theoceanisrichinbiologicalresourcesandprovidesaspecimenforbiologicalscienceresearchintermsofthediversityofglobalbiologicalresources.Theocean'sowntidalchangescontainalmostunlimitedenergyforgeneratingelectricity.Helppredictthepotentialdisasters,suchasearthquakesandtsunamis.Whatarethedisadvantagesofseaexploration?Ifunderseaoilisnotexploitedproperly,itcanpollutethesea.Possibilityofriskstoruintheecosystemsaroundthearea.Leadtothedestructionofoceantreasures.While-reading:Answerthequestions.

Whattypeessayisthistext?A.Anarrative(叙事性的)essay.B.Adescriptive(描述性的)essay.C.Anexpository(说明性的)essay.D.Anargumentative(议论性的)essay.Whataretheauthors’opinionstoseaexplorationinthesetwotexts?

Text1:Seaexplorationhascausedmanyproblemsandwillcontinuetocausemore.Text2:Seaexpllorationisimportantforourfuture.Detailed-Reading：Mainstructure

ArgumentativeEssayMainPoint(Para.1)Body(Para.2~4)Conclusion(Para.5)supportingideasText1:

supportingideasMorepollution.Miningforresourcesisdamaging.Overfishing

Text2:

supportingideas

ScientificresearchshipscanhelpaddressimportantissuesWeneedtounderstandwhatishappeningtoourplanetsothatwecantakeaction.Helpingusmanageitsresourcesbetter.FindingvastamountsofresourcesText1:

Conclusion

Ifwedon’tprotectit,futuregenerationswon’tforgiveus.Text2:

ConclusionEnvironmentalrisksshouldbebalancedwitheconomicneeds.Post-reading:grammarblanks(completethepassageaccordingtothetextandgrammarrules)Whenitcomes1___________seaexploration,differentpeoplehavedifferentopinions.Somepeoplethinkseaexplorationhascausedmanyproblemsand2___________(continue)tocausemore.Theyareafraidthatexploitingmoremeanspollutingmore,withplasticpollution3___________(kill)manybirdsandfish.Miningforresourcesisverydamaging.Besides,overfishingisanotherproblem.Whalesanddolphins4___________(hunt)fortheirmeat.Othersthink5___________necessarytodomoreresearchonthesea.towillcontinuekillingarehuntedit6___________(understand)ourplanet,wemustexploretheoceans7___________covermostofit.Understandingmoreabouttheseawillalsohelpusmanageitsresources8___________(well).9___________(log)newspecieswillimproveourunderstandingoflifeontheearth.Inmyopinion,astechnologyimproves,wewillhavethe10___________(able)tokeepthisbalancebetweenseaexplorationandeconomicneeds.TounderstandwhichbetterLoggingabilityImportantphrases不良循环某物流入海中开采资源无情地应对重要问题采取行动对……有更多的选择negativecyclespillsthintotheseamineforresourceswithoutmercyaddressimportantissuestakeactionhavemoreoptionsfor

Importantphrases自来水所谓的是……的家园/栖息地拥有；占有进入深海与……相平衡许多，大量tapwaterso-calledbehometoinpossessionofaccessthedeepoceanbebalancedwithamountsofImportantsentenceHopefully,astechnologyimproves,wemayhavemoreoptionsformanagingthisbalance.(Para.4)随着技术的进步，我们有望会有更多的选择来驾驭这一平衡。sentenceanalysis本句是复合句，astechnologyimproves是时间状语从句，as意为“随着”Hebecamelessactiveashegrewolder.随着年龄的增长，他变得不那么活跃了。as引导时间状语从句Astimegoesby,thejobwillletyouuseallyourskillstothemaximum.=Withtimegoingby,thejobwillletyouuseallyourskillstothemaximum.随着时间的推移，这份工作将让你最大限度地发挥你的技能。随着时间的推移astimegoesby

(as引导时间状语从句)withtimegoingby

(with复合结构)Hom