AppreciationofthesongHealtheWorldcause:1.cuttingdowntoomanytrees;2.desertification(沙漠化);3.hightemperatureandlittlerain;4.seriousairandwaterpollution;5.thegrowingpopulationoftheworld;6.improperuseofland…Inyouopinionwhatcausedthesandstorm?DiscussionMeasures:1.Weshouldplantmoretreesandgrowmoregrass.2.Controlairandwaterpollution.3.Buildgreenfencesalongthedesert.4.Forecastsandstorm’srealtimetopreventdisaster.5.Allcountriesshouldjoinhandstomakeaplaninsandstormscontrolandprevention.Whatshouldwedotoprotectourearth?Usefulwordsandexpression:throwtherubbishintodustbins(将垃圾扔进垃圾桶);cutdowntrees(砍树);pourwastewaterinto…(把废水倒入……)save(节约);plasticbags(塑料袋);digupgrass(破坏植被);plantmoretrees;recycleusefulrubbish(回收有用垃圾)…Whatcanwedotoprotectourenvironment?putdifferentgarbageintodifferentbagsWhatistheboydoing?Putyourgarbageintodifferentbags.recycleusefulrubbishusesomenewenergy,suchaswind,waterandsun.•Usefewerplasticbags.•Takethebusorwalkinsteadofdrivingcars.•Don’teattoomuchmeat.•Don’tusedisposablechopsticks.OtherSuggestionsonprotectingourenvironment:Forexample:Goodmorning,everyone:I’mgladtostandheretomakeaspeech.Mytopicishowtoprotectourenvironment.Inmyopinion,firstly,wecanplantmoretrees…Makeaspeech