Expression: (As) A work of...

English as a Second Language English Vocabulary, Grammar and Idioms
1

hello.
why is the following sentence right: ‘A work of fiction, it has at its
heart this fact…’ but ‘As a work of fiction, it has at its
heart this fact…’ not?
thanks.

2

Hi Spdazero

‘A work of fiction, it has at its heart this fact…’ ==> This means ‘It is a work of fiction, and it has at its heart this fact…’

‘As a work of fiction, it has at its heart this fact…’ ==> This suggests ‘Because it is a work of fiction, it has at its heart this fact…’
.