请教一个英语问题

请教一个英语问题

with the bag in their possession是修饰后面both men...这分句的状语，要用逗号分开。

如，With two apples in his hands, he left.
但，在句末，不用逗号分开。
He left with two apples in his hands.
原文也可以写做：
In the struggle, the strap broke and,both men started running through the trees with the bag in their possession.

And后面的逗号，表示停顿语气。

逗号中间是一个with的复合结构，即with+宾语+宾补，在本句中做一个插入性状语。and用来连接前后两句话：In the struggle, the strap broke and both men started running through the trees.

楼上说的基本正确。
这句话的正常语序是：
In the struggle, the strap broke and both men stated running through the trees with the bag in their possession.
这样就能回答你为什么用and和with，很明显这两个词不能去掉。
在这句中，为了强调两人是带着抢到的包跑掉的，所以把[with+宾语]组成的状语拿到了前面。这种表达方式主要是为了表示强调。
再举个例子：
Still sleepy, the little boy was dragged out from the bed and helped into his closes by his mother.
还很困的小男孩被他妈妈从被窝里拖出来穿衣服。
这里强调的是小男孩依然没睡醒。正常语序是：
The sleepy little boy was dragged...
再如：
With a very old walkman, he learned English well.
他就靠一个旧随身听学好了英文。
强调动作的方式。
希望对你有帮助

在这里的主句应该是the strap broke and both men started running through the trees.而 with the bag in their possession只是个插入语，表示伴随状态，这是with的一个重要用法，所以绝对不能把逗号和with去掉。看到这种句子，应该要先弄清楚主句是什么，到底是谁和谁并列。

去掉with, "the bag in their possession"无法独立成句，with the bag in their possession是一个补充说明。

没具体的意思，主要是换气和情感的表达。。