跪求英文摘要语法错误改正,括号里的内容就是指导老师打出来的需要修改的,我自己找不到错误点啊Businesscorrespondenceisthemeanstopromotebusinessexchangesandtocoordinateinternationalbusinessactivities

　　跪求英文摘要语法错误改正,括号里的内容就是指导老师打出来的需要修改的,我自己找不到错误点啊

　　Businesscorrespondenceisthemeanstopromotebusinessexchangesandtocoordinateinternationalbusinessactivitiesof(modernrelationships,.)businesscorrespondenceasaveryimportantwayofBusinesscommunication.Politeness(principlesdetermine)thedegreeofpoliteness,(sobusinesslettersmustbehigherthanthedailycorrespondence,)itisalso(writingskills)whichweshouldfocusongraspinginEnglishbusinessletter.theprinciplesofpolitenessisthepracticalapplicationofmethodsinforeignCorrespondence(canreflectfromThisattitudeof)thedrafting,selectthevocabulary.(politeness)canreflectfrompositive,tactful,Inshort,thepolitenessprincipleplayapivotalroleinbusinesscorrespondence,politenesscanbereflectedbythepolitewaywhicharevaried.