同学你好，该知识点来自沪江网校《新概念英语1、2、3、4册连读【全额奖学金班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
这属于with复合结构，在句中表状态或说明背景情况，具体结构如下：

1. with＋宾语＋名词
He died with his daughter yet a schoolgirl．他去世时，女儿还是个小学生。

2. with +名词 + 介词短语
She said good-bye with tears in her eyes． 她含着眼泪说了声再见。
He was asleep with his head on his arms． 他头枕着胳膊睡着了。

3．with + 名词 + 形容词　（强调名词的特性或状态）
He often sleeps with the windows open．他常开着窗睡觉。
Don’t speak with your mouth full．不要满嘴巴食物说话。

4. with +　名词 + 副词
He stood before his teacher with his head down．他低着头站在老师面前。
He was lying on the bed with all his clothes on．他和衣躺在床上。

5. with + 名词 + -ed 分词 （强调名词是 -ed分词动作的承受者或动作已经发生）
He sat there with his eyes closed．他闭目坐在那儿。

6. with + 名词 + -ing分词（强调名词是 -ing分词的动作的发出者或某动作，状态正在进行）
He fell asleep with the lamp burning．他没熄灯就睡着了。

7. with + 名词 + to do （不定式动作尚未发生）
I can’t go out with all these clothes to wash．要洗这些衣服，我无法出去了。

这里with the bag in their possession也属于with+名词+介词短语的结构，with在这里有“带着，伴随着”的意思

祝同学学习进步~