新世纪英语高二上-Unit6-Oceans-under-threat导入课PPT课件一等奖新名师优质.pptx

BrainstormingBenefitsoftheocean

OceansUnderThreatwarningoffuturedanger

Overfishing

ScanParaBandfillintheblanks:takingtoomanysamespeciesasmallareanotenoughbreedfoodchainnotenoughfisheatOverfishing:causedby_____________ofthe____________from____________.Harmfulimpacts:______________fishleftto_________;affectsotherfishinthe__________;_______________leftto____affectspeopleMeasurestaken:______________________________________________________________________________________________Limitshavebeensetforthenumberoffishtobecaughtatonetime

marinelifecoralreefsseaweedseaweedMarinelifeWecanseedifferenttypesof___________,suchasfish,_________,_________andsoon.Theoceanissimplyawonderland---providingusnotonlywithfood,butalsowithawiderangeofenjoyment.Whatcanweseeinthepicture?fishcoralreef

Whatmightbeunderthreats?Canyoupredictwhatisgoingtobementionedinthenextparagraph?

KillingTouringThreatstoMarinelife

Whichpartofthesentencehelpsyouguessthemeaningof“rare”?2)Whathelpspeopledevelopanunderstandingofmarinelife?3)Whatcanhappentothecoralreefsandshellfish?4)Whatdodiversdo?Whatdoesitaffect?ScanParaCandanswerthequestions:

Whichpartofthesentencehelpsyouguessthemeaningof“rare”?Thepartofthesentenceis:becausetoomanyhavebeenkilledforfoodorsport.

2)Whathelpspeopledevelopanunderstandingofmarinelife?Tropicalislandsandcoastswithcoralreefsalsoattractlargenumbersoftouristseveryyear,whichhelpspeopledevelopanunderstandingofmarinelife.

3)Whatcanhappentothecoralreefsandshellfish?Theycanbedestroyedbyheavyboats.

4)Whatdodiversdo?Whatdoesitaffect?Diversstayunderwaterjustforfunortohuntforsouvenirs.Itaffectsthenaturalcyclesofmarinelife.

TrashDumpingPollution

Oneofthebiggestthreatstooceansispollutionfrom