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人教必修三 Unit 2 Using Language(共99张PPT).ppt

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Unit2HealthyeatingUsinglanguageUsingLanguagerickets:scurvy:obesity:WangPengisdoingresearchtofindouthowanunbalanceddietcanaffectyourhealthsoyouneedtoeatabalanceddietifyouaretostayhealthy.Scurvy4Whatsuggestionsyouwouldgivethem?HOWANUNBALANCEDDIETCANAFFECTYOURHEALTHWangPengwenttothelibrarywherehehappenedtomeetanexpertondiets.Heaskedhimforhelp.WP=WangpengE=ExpertWP:Hello.Canyouhelpmeplease?Iwanttofindoutmoreaboutbalanceddiets.E:Ofcourse.Abalanceddietneedsenergyfoodlikericeandnoodlesbody-buildingfoodlikefishandmeatforproteinandfatandprotectivefoodlikefruitandvegetablesforfibreandvitamins.WP:Yes.butdoesitmatterhowmuchricenoodlesandsugarleat?E:Yes.Ifyoueattoomuchyoumaybecomeobese.Thismeansyouaretoofatanditmayleadtootherillnesses.Howeverifyoudon’teatenoughricenoodlesorsugaryou’llgettiredeasily.WP:lsee.I'llbecarefulaboutthat.DoesitmatterhowmuchfishmeatorcheeseIeat?E:Toomuchcanalsomakeyoufatbutifyoudon’teatenoughyourboneswon’tgrowstrong.Alongtimeagochildrenwhodidn’teatenoughvitaminDandbody-buildingfooddidn’tgrowstraightlegs.Theygotanillnesscalledrickets.WP:Ohdear!Dopeoplestillhavetheproblem?E:Sometimes.WP:Thenwhataboutfruitandvegetables?HowmuchshouldIeat?E:Yououghttoeataboutfivebigspoonfulsofdifferentfruitandvegetableseveryday.WP:Really?Ididn’tknowthat.E:Yes.Inthe18thcenturysailorsatseausedtofindthattheirteethfelloutandtheyhadbadspotsontheirskin.Theygotitbecausetheydidn’teatenoughfruitandvegetables.Theillnessiscalledscurvy.WP:Goodness!Whataboutnow?E:It’sveryrarenow.Peopleeatmorefruitandvegetables.Youneedprotectivefoodlikethatforclearskinandbrighteyes.WP:Thankyouvery