伴随状语有名词词性吗如 write sentences describing hou you delt when you

伴随状语有名词词性吗如 write sentences describing hou you delt when you saw

这应该视情况而定了.
例如：
1 The little boy sat in the armchair,reading a book.
这个句子当中,reading a book是充当伴随状语的,显然,它是具有名词词性的.
2 The little boy sat in the armchair,with a book in his hand .
而在这个句子中with a book in his hand 是伴随状语,你说这个介词短语充当的伴随状语能有名词性质吗?