Dear Liu Mei (人名要大写)
I have received (your sent位置错误) (要个the) longman modern English dictionary,( which you have sent me) (open after looking,也是位置错误) I am very satisfied,(after opening it and have a look.) (要加个 It) is (exactly) what I want (去掉to book).(After this dictionary will be to my study is of great help这一句要重新整理为:It has been a great help to my study since I have got this dictionary).(去掉Because you to my learning support 因为重复了上 一句) so I will (be very good save 改为 treasure) this book (carefully),(应加because)(this book 用代词 it 以免重复 the book) is the witness of our friendship,thank you my friend!May our friendship be everlasting
Yours sincerely,
Wang Lin
这次我没有替你重写,只是照原文更正,希望会令你满意.