关于with

She came back with a letter in her hand.

with a letter in her hand是做状语修饰came back还是做定语修饰she

伴随状语

参考独立主格结构：

5）名词／代词十介词短语
The huntsman entered the forest，gun in hand．那位猎人手里提着枪走进了树林。
注意：这里，gun in hand还可以说成with a gun in his hand，但不可以说a gun in hand或gun in his hand。

唯一的区别就是逗号的区别。

Only people with plenty of money can afford to shop here.

She came back with a letter in her hand.

with plenty of money 不能修饰can afford 所以只能修饰people,

但with a letter 可以修饰 came back 所以就可以做独立主格

这样理解,对吗