看你是在哪个时间段演讲,可以用GOODMORNING,goodafternoon.,i'mastudentofclass0,grade9,Number2MiddleschoolofPucheng.today,i'msohonorabletostandhereforgivingaspeechnamedLETTHEEARTHSMILE!THEEARTH,ourdearestmother--BUT,myfriends,doanyofyouhaveconsideredhowserioustheproblemwillbewhentheearthispolluted,theairisnotfresh,theforestisnotflourishing?Theenvironmentpollutionexisteverywhere,theearthwillloseitslusternoon.myfriends,sholdwestillkeepinsensible?ourearthmotherisnotsmilinganymore,doesn'titdosomethingtous?Let'smoving,mydearclassmates,carryoutenvironmentalprotectionwithatrifletomaketheearthapureland,and,letitholdacharmingsmile!thankyou!累死了。。。。楼上的答案建议你别用,纯粹是用软件翻译的。