Goodmorningeveryone,it'smypleasuretomeetallofyou(youall是你们全部,中式英语).MynameisXXX.Iam16yearsold.I’minterestedinEnglishverymuchandtoday(不用so因为不是因果关系)Istandheretoshowyouaboutmyself（你那么说也行吧）.Ilikereadingbooksandwritingarticlesbest.Forthatreason,mydreamisbecomingawriter.(你那样说也行)Ienjoylisteningtopopmusic,too.Moreover(除此之外),Ihavegoodself-confidence(自信)andIhaveasenseofhumor.IamanoutgoinggirlsoIhavealargecircleoffriends.（这里先强调你的幽默再强调你有许多朋友比较好）I’mgoodatChinese,Englishandphysics.IthinkI’mahardworkingstudentandIbelievetheword“Nopain,nogain.”IhopeIcangetagoodresultinthiscompetition.That’sall,thankyou.

　　Goodmorningeveryone,it'sapleasuretomeetallofyou(youall是你们全部,中式英语).MynameisXXX.Iam16yearsold.I’minterestedinEnglishverymuchandtoday(不用so因为不是因果关系)Istandheretoshowyouaboutmyself（你那么说也行吧）.Ilikereadingbooksandwritingarticlesbest.Forthatreason,mydreamisbecomingawriter.(你那样说也行)Ienjoylisteningtopopmusic,too.Moreover(不仅如此),Ihavegoodself-confidence(自信)andIhaveasenseofhumor.IamanoutgoinggirlsoIhavealargecircleoffriends.（这里先强调你的幽默再强调你有许多朋友比较好）I’mgoodatChinese,Englishandphysics.IthinkI’mahardworkingstudentandIbelievetheword“Nopain,nogain.”IhopeIcangetagoodresultinthiscompetition.That’sall,thankyou.

　　Goodmorningeveryone,it'sapleasuretomeetallofyou.MynameisXXX.Iam16yearsold.I’minterestedinEnglishverymuchandtodayIstandheretoshowyouaboutmyself.Ilikereadingbooksandwritingarticlesbest.Forthatreason,mydreamisbecomingawriter.Ialsoenjoylisteningtopopmusic.Moreover,Ihavegoodself-confidenceandIhaveasenseofhumor.IamanoutgoinggirlsoIhavealargecircleoffriends.I’mgoodatChinese（Mandarin）,Englishandphysics.IthinkI’mahardworkingstudentandIbelievetheword“Nopain,nogain.”IhopeIcangetagoodresultinthiscompetition.That’sall,thankyou.

　　总体你写作感觉不错,大致没有什么语法错误,就是I用的多点.

　　只是演讲时记得要随机应变就好.最后想不到结尾,就说THANKYOUFORYOURLISTENINGTOMYPRESENTATION.

　　放轻松就好

　　Nopain,nogain是对的,放心.不信你去百度查.