Dear Readers ,
I have a confusion regarding the following sentences
1.) The person at the door was he/The person at the door was him.
The person at the door was I/ The person at the door was me.
In such sentences what is the subject and what is the object? The problem is that if you flip the sentences meaning doesn't seem to change but subjects and objects do. The confusion is whether to use object pronoun "him/me" or subject pronoun "I".
To me, it just sounds better with "him/me" but textbooks seem to use "he/I" instead. For eg. "No one knew that the Thief was I".
I asked a professional editor and native english speaker. She was not confident but preferred "him/me".
2) It has changed/It has been changed.
Do these sentences mean the same thing? Is one of them grammatically awkward/incorrect? both of them seem to be "present perfect". is that true?
Any help will be much appreciated.
Thanks
Zia