DearMary,
I'vereceivedyoure-mailandknowthatyouareinabadmoodnow.Iamsorrytohearthatyoudidn'tdowellinEnglishexams,butIbelieveyouwilldefinitelydowellnexttime.Here'ssomeofmyadvicethatIwishcouldhelp.Youshouldn'tbefrustratedandcantaketimetofigureoutwhyyoudidn'tdowell.Maybeyouneedtoworkonyourvocabulariesorgrammar.Youcanalsostudytheexamstomakesureyouunderstandwhyyougotsomeproblemswrongandtrynottomakethesamemistakesagain.Failureisthemotherofsuccess.Aslongasyouworkhardanddon'tgiveup,youwillsucceed!
Yours,
Susan
亲爱的Mary
我收到你的email知道你现在心情不好.我很抱歉听说你英语考试没有考好,但是我相信你下次一定会考得好.这里是我的一些建议希望能帮到你.你不应该沮丧而且能花些时间弄明白为什么你没考好.可能你需要增强你的词汇量或者语法.你也能学习考卷确保你知道为什么有些问题错了,而且尽量不要再犯同样的错误.失败是成功之母.只要你努力学习不放弃,你就会成功.
你的,
Susan
字数比较多·你可以按照中文意思自己删减.