I have received and read your letter,in which you mentioned that you want to lose weight by dieting.
2025-12-17 12:22:34
推荐回答（1个）
回答1：
这个是定语从句，“in which you mentioned that you want to lose weight by dieting.”修饰“letter”，用来说明信的内容，可以去掉“，”并把“in which”替换成that，意思也是一样的。定语从句作用很大，使用起来也很方便，尤其是用来写那种比较长的句子，在写英语作文的时候也会是加分项，建议题主多了解一下定语从句，望采纳，谢谢~
