拜托帮我分析一下这句话的语法.When unpacking my luggage ,i've found that i

首先说一下,这个句子时态有问题.I've found应为过去时I found,同时后面的宾语从句也要用过去时,应改为When unpacking my luggage,I found that I still kept your music CD that I borrowed from you five days ago.
when unpacking my luggage,这部分为时间状语,相当于When （I was) unpacking my luggage,I found为这个句子的主语和谓语动词,后面的that引导的句子是一个宾语从句.宾语从句中cd后的that引导的句子为定语从句,修饰cd.
这句话的主干就是“I（主语）+ found(谓语动词）+that...(宾语从句）”
本句意为“当我打开行李时,发现我仍然带着五天前从你那儿借来的音乐CD”.

When unpacking my luggage , 是省略了 I was
i've found that 后面的宾语从句
i still keep your music cd that 后面的是定语从句修饰CD i borrowed from your five days ago.