If I say 'fiction is written by those with a creative flair'; and 'Oliver Twist is written by Dickens', what part of speech is the word 'written' in each of these?
I recognise that it may not be the same for each of them.
Written is the past participle of write in both, and, as such, it is a non-finite verb, and used here to form passive constructions.
Sign up using Google
Sign up using Facebook
Sign up using Stack Exchange
11 months ago