感謝在美國期間妳所提供的幫助 壹本英語詞典忘記帶回，請妳幫我寄回來 詞典是美國老師送的，非常珍貴

Thanks for your help during my stay in America. Unfortunately I left my English dictionary when I came back.Could you send it for me?I treasure it very much because it's a gift from my American teacher.