假如你从英语老师Mr. Smith那里借了一本BBC English杂志，到期不能归还。你写信向他表示歉意，并说明原因。（词数  80左右）

内容包括：1．借书时间; 

2．对未能如期归还表示歉意；

3．说明未能归还的理由和对杂志的看法：此杂志很好，你想摘抄一些内容；

4．保证下星期一一定归还；

5． 对他的帮助表示感谢

可能会用到的单词或短语： magazine杂志，keep one’s word遵守诺言 

1、Dear Mr. Smith,

Last week I borrowed a magazine from you．Its name is BBC English．I enjoyed it very much．I am very sorry that I can’t return it to you today．I should keep my words, but the book is so interesting that I want to copy something from it．I think it will help me learn English well．May I keep it for another week if you don’t use it now? I’m sure I will return it to you next Monday．

                                                            Yours,

                                                          Jim